ID

VAR-201602-0004

CVE

CVE-2015-7547

TITLE

GNU glibc getaddrinfo () stack buffer overflow vulnerability

DESCRIPTION

Multiple stack-based buffer overflows in the (1) send_dg and (2) send_vc functions in the libresolv library in the GNU C Library (aka glibc or libc6) before 2.23 allow remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a crafted DNS response that triggers a call to the getaddrinfo function with the AF_UNSPEC or AF_INET6 address family, related to performing "dual A/AAAA DNS queries" and the libnss_dns.so.2 NSS module. GNU glibc is an open source C language compiler released under the LGPL license agreement. It is an implementation of the C library in the Linux operating system. There is a stack overflow vulnerability in the getaddrinfo function in glibc when processing a specific DNS response packet. An attacker can use the vulnerability to launch an attack on a Linux host or related devices by constructing a malicious DNS service or using a man-in-the-middle attack, which results in remote code execution and can be obtained. User terminal control. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Critical: glibc security and bug fix update Advisory ID: RHSA-2016:0175-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-0175.html Issue date: 2016-02-16 CVE Names: CVE-2015-7547 ===================================================================== 1. Summary: Updated glibc packages that fix one security issue and two bugs are now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having Critical security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64 3. Description: The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the Name Server Caching Daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. A stack-based buffer overflow was found in the way the libresolv library performed dual A/AAAA DNS queries. Note: this issue is only exposed when libresolv is called from the nss_dns NSS service module. (CVE-2015-7547) This issue was discovered by the Google Security Team and Red Hat. This update also fixes the following bugs: * The dynamic loader has been enhanced to allow the loading of more shared libraries that make use of static thread local storage. While static thread local storage is the fastest access mechanism it may also prevent the shared library from being loaded at all since the static storage space is a limited and shared process-global resource. Applications which would previously fail with "dlopen: cannot load any more object with static TLS" should now start up correctly. (BZ#1291270) * A bug in the POSIX realtime support would cause asynchronous I/O or certain timer API calls to fail and return errors in the presence of large thread-local storage data that exceeded PTHREAD_STACK_MIN in size (generally 16 KiB). The bug in librt has been corrected and the impacted APIs no longer return errors when large thread-local storage data is present in the application. (BZ#1301625) All glibc users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1293532 - CVE-2015-7547 glibc: getaddrinfo stack-based buffer overflow 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: glibc-2.12-1.166.el6_7.7.src.rpm i386: glibc-2.12-1.166.el6_7.7.i686.rpm glibc-common-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.i686.rpm glibc-devel-2.12-1.166.el6_7.7.i686.rpm glibc-headers-2.12-1.166.el6_7.7.i686.rpm glibc-utils-2.12-1.166.el6_7.7.i686.rpm nscd-2.12-1.166.el6_7.7.i686.rpm x86_64: glibc-2.12-1.166.el6_7.7.i686.rpm glibc-2.12-1.166.el6_7.7.x86_64.rpm glibc-common-2.12-1.166.el6_7.7.x86_64.rpm glibc-debuginfo-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-2.12-1.166.el6_7.7.x86_64.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.x86_64.rpm glibc-devel-2.12-1.166.el6_7.7.i686.rpm glibc-devel-2.12-1.166.el6_7.7.x86_64.rpm glibc-headers-2.12-1.166.el6_7.7.x86_64.rpm glibc-utils-2.12-1.166.el6_7.7.x86_64.rpm nscd-2.12-1.166.el6_7.7.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): i386: glibc-debuginfo-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.i686.rpm glibc-static-2.12-1.166.el6_7.7.i686.rpm x86_64: glibc-debuginfo-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-2.12-1.166.el6_7.7.x86_64.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.x86_64.rpm glibc-static-2.12-1.166.el6_7.7.i686.rpm glibc-static-2.12-1.166.el6_7.7.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: glibc-2.12-1.166.el6_7.7.src.rpm x86_64: glibc-2.12-1.166.el6_7.7.i686.rpm glibc-2.12-1.166.el6_7.7.x86_64.rpm glibc-common-2.12-1.166.el6_7.7.x86_64.rpm glibc-debuginfo-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-2.12-1.166.el6_7.7.x86_64.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.x86_64.rpm glibc-devel-2.12-1.166.el6_7.7.i686.rpm glibc-devel-2.12-1.166.el6_7.7.x86_64.rpm glibc-headers-2.12-1.166.el6_7.7.x86_64.rpm glibc-utils-2.12-1.166.el6_7.7.x86_64.rpm nscd-2.12-1.166.el6_7.7.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): x86_64: glibc-debuginfo-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-2.12-1.166.el6_7.7.x86_64.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.x86_64.rpm glibc-static-2.12-1.166.el6_7.7.i686.rpm glibc-static-2.12-1.166.el6_7.7.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: glibc-2.12-1.166.el6_7.7.src.rpm i386: glibc-2.12-1.166.el6_7.7.i686.rpm glibc-common-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.i686.rpm glibc-devel-2.12-1.166.el6_7.7.i686.rpm glibc-headers-2.12-1.166.el6_7.7.i686.rpm glibc-utils-2.12-1.166.el6_7.7.i686.rpm nscd-2.12-1.166.el6_7.7.i686.rpm ppc64: glibc-2.12-1.166.el6_7.7.ppc.rpm glibc-2.12-1.166.el6_7.7.ppc64.rpm glibc-common-2.12-1.166.el6_7.7.ppc64.rpm glibc-debuginfo-2.12-1.166.el6_7.7.ppc.rpm glibc-debuginfo-2.12-1.166.el6_7.7.ppc64.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.ppc.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.ppc64.rpm glibc-devel-2.12-1.166.el6_7.7.ppc.rpm glibc-devel-2.12-1.166.el6_7.7.ppc64.rpm glibc-headers-2.12-1.166.el6_7.7.ppc64.rpm glibc-utils-2.12-1.166.el6_7.7.ppc64.rpm nscd-2.12-1.166.el6_7.7.ppc64.rpm s390x: glibc-2.12-1.166.el6_7.7.s390.rpm glibc-2.12-1.166.el6_7.7.s390x.rpm glibc-common-2.12-1.166.el6_7.7.s390x.rpm glibc-debuginfo-2.12-1.166.el6_7.7.s390.rpm glibc-debuginfo-2.12-1.166.el6_7.7.s390x.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.s390.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.s390x.rpm glibc-devel-2.12-1.166.el6_7.7.s390.rpm glibc-devel-2.12-1.166.el6_7.7.s390x.rpm glibc-headers-2.12-1.166.el6_7.7.s390x.rpm glibc-utils-2.12-1.166.el6_7.7.s390x.rpm nscd-2.12-1.166.el6_7.7.s390x.rpm x86_64: glibc-2.12-1.166.el6_7.7.i686.rpm glibc-2.12-1.166.el6_7.7.x86_64.rpm glibc-common-2.12-1.166.el6_7.7.x86_64.rpm glibc-debuginfo-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-2.12-1.166.el6_7.7.x86_64.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.x86_64.rpm glibc-devel-2.12-1.166.el6_7.7.i686.rpm glibc-devel-2.12-1.166.el6_7.7.x86_64.rpm glibc-headers-2.12-1.166.el6_7.7.x86_64.rpm glibc-utils-2.12-1.166.el6_7.7.x86_64.rpm nscd-2.12-1.166.el6_7.7.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 6): i386: glibc-debuginfo-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.i686.rpm glibc-static-2.12-1.166.el6_7.7.i686.rpm ppc64: glibc-debuginfo-2.12-1.166.el6_7.7.ppc.rpm glibc-debuginfo-2.12-1.166.el6_7.7.ppc64.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.ppc.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.ppc64.rpm glibc-static-2.12-1.166.el6_7.7.ppc.rpm glibc-static-2.12-1.166.el6_7.7.ppc64.rpm s390x: glibc-debuginfo-2.12-1.166.el6_7.7.s390.rpm glibc-debuginfo-2.12-1.166.el6_7.7.s390x.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.s390.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.s390x.rpm glibc-static-2.12-1.166.el6_7.7.s390.rpm glibc-static-2.12-1.166.el6_7.7.s390x.rpm x86_64: glibc-debuginfo-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-2.12-1.166.el6_7.7.x86_64.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.x86_64.rpm glibc-static-2.12-1.166.el6_7.7.i686.rpm glibc-static-2.12-1.166.el6_7.7.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: glibc-2.12-1.166.el6_7.7.src.rpm i386: glibc-2.12-1.166.el6_7.7.i686.rpm glibc-common-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.i686.rpm glibc-devel-2.12-1.166.el6_7.7.i686.rpm glibc-headers-2.12-1.166.el6_7.7.i686.rpm glibc-utils-2.12-1.166.el6_7.7.i686.rpm nscd-2.12-1.166.el6_7.7.i686.rpm x86_64: glibc-2.12-1.166.el6_7.7.i686.rpm glibc-2.12-1.166.el6_7.7.x86_64.rpm glibc-common-2.12-1.166.el6_7.7.x86_64.rpm glibc-debuginfo-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-2.12-1.166.el6_7.7.x86_64.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.x86_64.rpm glibc-devel-2.12-1.166.el6_7.7.i686.rpm glibc-devel-2.12-1.166.el6_7.7.x86_64.rpm glibc-headers-2.12-1.166.el6_7.7.x86_64.rpm glibc-utils-2.12-1.166.el6_7.7.x86_64.rpm nscd-2.12-1.166.el6_7.7.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): i386: glibc-debuginfo-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.i686.rpm glibc-static-2.12-1.166.el6_7.7.i686.rpm x86_64: glibc-debuginfo-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-2.12-1.166.el6_7.7.x86_64.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.i686.rpm glibc-debuginfo-common-2.12-1.166.el6_7.7.x86_64.rpm glibc-static-2.12-1.166.el6_7.7.i686.rpm glibc-static-2.12-1.166.el6_7.7.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2015-7547 https://access.redhat.com/security/updates/classification/#critical https://access.redhat.com/articles/2161461 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2016 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFWw0gnXlSAg2UNWIIRAgp4AJ9BIF6YHY/UoQcUvkEfqPbxa4+G6wCgouQY aOCbFFx87AiVZnfSlGYcLjI= =tRjT -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . For HPE Helion OpenStack 1.1.1: Helion OpenStack 1.1.1 customers should engage with HPE Helion Professional Services via existing support channels to assist with the upgrade. For HPE Helion OpenStack 2.0.x the recommended update path is to download and upgrade to Helion OpenStack 2.1.2 or a subsequent later version . This can be done as follows: Go to https://helion.hpwsportal.com and download HPE Helion OpenStack 2.1.2 Follow these http://docs.hpcloud.com/#helion/installation/upgrade20_to_212.html deployment steps to upgrade to 2.1.2 HPE Helion OpenStack 2.0.x customers can also choose to install the 2.0.2 release, which only includes the changes mentioned in the release notes http://docs.hpcloud.com/#helion/releasenotes202.html . This can be done as follows: Go to https://helion.hpwsportal.com and download HPE Helion OpenStack 2.0.2 Follow these http://docs.hpcloud.com/#helion/installation/upgrade20_to_202.html deployment steps to upgrade to 2.0.2 To patch HPE Helion OpenStack 2.1.0: Go to https://helion.hpwsportal.com and download HPE Helion OpenStack 2.1.2 or a subsequent later version . - HP StoreVirtual VSA Software 12.6 - HP StoreVirtual 4130 600GB SAS Storage 12.6 - HP StoreVirtual 4130 600GB China SAS Storage 12.6 - HP StoreVirtual 4330 1TB MDL SAS Storage 12.6 - HP StoreVirtual 4330 450GB SAS Storage 12.6 - HP StoreVirtual 4330 900GB SAS Storage 12.6 - HP StoreVirtual 4330 1TB MDL China SAS Storage 12.6 - HP StoreVirtual 4330 450GB China SAS Storage 12.6 - HP StoreVirtual 4330 900GB China SAS Storage 12.6 - HP StoreVirtual 4330 FC 900GB SAS Storage 12.6 - HP StoreVirtual 4330 FC 900GB China SAS Storage 12.6 - HP StoreVirtual 4530 2TB MDL SAS Storage 12.6 - HP StoreVirtual 4530 3TB MDL SAS Storage 12.6 - HP StoreVirtual 4530 450GB SAS Storage 12.6 - HP StoreVirtual 4530 600GB SAS Storage 12.6 - HP StoreVirtual 4630 900GB SAS Storage 12.6 - HP StoreVirtual 4730 600GB SAS Storage 12.6 - HP StoreVirtual 4730 900GB SAS Storage 12.6 - HP StoreVirtual 4730 FC 900GB SAS Storage 12.6 - HP StoreVirtual 4330 450GB SAS Storage/S-Buy 12.6 - HP StoreVirtual 4330 900GB SAS Storage/S-Buy 12.6 - HP StoreVirtual 4330 1TB MDL SAS Storage/S-Buy 12.6 - HP StoreVirtual 4530 3TB MDL SAS Storage/S-Buy 12.6 - HP StoreVirtual 4530 450GB SAS Storage/S-Buy 12.6 - HP StoreVirtual 4335 China Hybrid Storage 12.6 - HP StoreVirtual 4335 Hybrid Storage 12.6 - HP StoreVirtual 4530 4TB MDL SAS Storage 12.6 - HP StoreVirtual 4130 600GB China SAS Storage 12.6 - HP StoreVirtual 4130 600GB SAS Storage 12.6 - HP StoreVirtual 4330 1TB MDL China SAS Storage 12.6 - HP StoreVirtual 4330 1TB MDL SAS Storage 12.6 - HP StoreVirtual 4330 1TB MDL SAS Storage/S-Buy 12.6 - HP StoreVirtual 4330 450GB China SAS Storage 12.6 - HP StoreVirtual 4330 450GB SAS Storage 12.6 - HP StoreVirtual 4330 450GB SAS Storage/S-Buy 12.6 - HP StoreVirtual 4330 900GB China SAS Storage 12.6 - HP StoreVirtual 4330 900GB SAS Storage 12.6 - HP StoreVirtual 4330 900GB SAS Storage/S-Buy 12.6 - HP StoreVirtual 4330 FC 900GB China SAS Storage 12.6 - HP StoreVirtual 4330 FC 900GB SAS Storage 12.6 - HP StoreVirtual 4335 China Hybrid SAN Solution 12.6 - HP StoreVirtual 4335 China Hybrid Storage 12.6 - HP StoreVirtual 4335 Hybrid SAN Solution 12.6 - HP StoreVirtual 4335 Hybrid Storage 12.6 - HP StoreVirtual 4530 2TB MDL SAS Storage 12.6 - HP StoreVirtual 4530 3TB MDL SAS Storage 12.6 - HP StoreVirtual 4530 3TB MDL SAS Storage/S-Buy 12.6 - HP StoreVirtual 4530 450GB SAS Storage 12.6 - HP StoreVirtual 4530 450GB SAS Storage/S-Buy 12.6 - HP StoreVirtual 4530 4TB MDL SAS Storage 12.6 - HP StoreVirtual 4530 600GB SAS Storage 12.6 - HP StoreVirtual 4530 600GB SAS Storage/S-Buy 12.6 - HP StoreVirtual 4630 900GB SAS Storage 12.6 - HP StoreVirtual 4730 600GB SAS Storage 12.6 - HP StoreVirtual 4730 600GB SAS Storage/S-Buy 12.6 - HP StoreVirtual 4730 900GB SAS Storage 12.6 - HP StoreVirtual 4730 900GB SAS Storage/S-Buy 12.6 - HP StoreVirtual 4730 FC 900GB SAS Storage 12.6 BACKGROUND CVSS Base Metrics ================= Reference, CVSS V3 Score/Vector, CVSS V2 Score/Vector CVE-2015-7547 5.6 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L 6.8 (AV:N/AC:M/Au:N/C:P/I:P/A:P) Information on CVSS is documented in HPE Customer Notice HPSN-2008-002 here: https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay/?docI d=emr_na-c01345499 RESOLUTION HPE has made the following software updates available to resolve the vulnerability with glibc for all of the impacted HPE StoreVirtual products. - LeftHand OS 12.6 - patch 56001 - LeftHand OS 12.5 - patch 55015 **Notes:** - These patches will upgrade glibc to 2.12-1.166 to resolve this issue. The CVE-2015-7547 vulnerability listed below is considered to have critical impact. CVE-2014-8121 Robin Hack discovered that the nss_files database did not correctly implement enumeration interleaved with name-based or ID-based lookups. This could cause the enumeration enter an endless loop, leading to a denial of service. CVE-2015-1781 Arjun Shankar discovered that the _r variants of host name resolution functions (like gethostbyname_r), when performing DNS name resolution, suffered from a buffer overflow if a misaligned buffer was supplied by the applications, leading to a crash or, potentially, arbitrary code execution. Most applications are not affected by this vulnerability because they use aligned buffers. CVE-2015-7547 The Google Security Team and Red Hat discovered that the eglibc host name resolver function, getaddrinfo, when processing AF_UNSPEC queries (for dual A/AAAA lookups), could mismanage its internal buffers, leading to a stack-based buffer overflow and arbitrary code execution. This vulnerability affects most applications which perform host name resolution using getaddrinfo, including system services. CVE-2015-8776 Adam Nielsen discovered that if an invalid separated time value is passed to strftime, the strftime function could crash or leak information. Applications normally pass only valid time information to strftime; no affected applications are known. CVE-2015-8777 Hector Marco-Gisbert reported that LD_POINTER_GUARD was not ignored for SUID programs, enabling an unintended bypass of a security feature. This update causes eglibc to always ignore the LD_POINTER_GUARD environment variable. CVE-2015-8778 Szabolcs Nagy reported that the rarely-used hcreate and hcreate_r functions did not check the size argument properly, leading to a crash (denial of service) for certain arguments. No impacted applications are known at this time. CVE-2015-8779 The catopen function contains several unbound stack allocations (stack overflows), causing it the crash the process (denial of service). No applications where this issue has a security impact are currently known. The following fixed vulnerabilities currently lack CVE assignment: Joseph Myers reported discovered that an integer overflow in the strxfrm can lead to heap-based buffer overflow, possibly allowing arbitrary code execution. In addition, a fallback path in strxfrm uses an unbounded stack allocation (stack overflow), leading to a crash or erroneous application behavior. Kostya Serebryany reported that the fnmatch function could skip over the terminating NUL character of a malformed pattern, causing an application calling fnmatch to crash (denial of service). Joseph Myers reported that the IO_wstr_overflow function, internally used by wide-oriented character streams, suffered from an integer overflow, leading to a heap-based buffer overflow. On GNU/Linux systems, wide-oriented character streams are rarely used, and no affected applications are known. Andreas Schwab reported a memory leak (memory allocation without a matching deallocation) while processing certain DNS answers in getaddrinfo, related to the _nss_dns_gethostbyname4_r function. This vulnerability could lead to a denial of service. While it is only necessary to ensure that all processes are not using the old eglibc anymore, it is recommended to reboot the machines after applying the security upgrade. For the oldstable distribution (wheezy), these problems have been fixed in version 2.13-38+deb7u10. We recommend that you upgrade your eglibc packages. Here are the details from the Slackware 14.1 ChangeLog: +--------------------------+ patches/packages/glibc-2.17-i486-11_slack14.1.txz: Rebuilt. However, due to a patch applied to Slackware's glibc back in 2009 (don't use the gethostbyname4() lookup method as it was causing some cheap routers to misbehave), we were not vulnerable to that issue. Nevertheless it seems prudent to patch the overflows anyway even if we're not currently using the code in question. Thanks to mancha for the backported patch. For more information, see: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7547 (* Security fix *) patches/packages/glibc-i18n-2.17-i486-11_slack14.1.txz: Rebuilt. patches/packages/glibc-profile-2.17-i486-11_slack14.1.txz: Rebuilt. patches/packages/glibc-solibs-2.17-i486-11_slack14.1.txz: Rebuilt. +--------------------------+ Where to find the new packages: +-----------------------------+ Thanks to the friendly folks at the OSU Open Source Lab (http://osuosl.org) for donating FTP and rsync hosting to the Slackware project! :-) Also see the "Get Slack" section on http://slackware.com for additional mirror sites near you. Updated packages for Slackware 14.1: ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/glibc-2.17-i486-11_slack14.1.txz ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/glibc-i18n-2.17-i486-11_slack14.1.txz ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/glibc-profile-2.17-i486-11_slack14.1.txz ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/glibc-solibs-2.17-i486-11_slack14.1.txz Updated packages for Slackware x86_64 14.1: ftp://ftp.slackware.com/pub/slackware/slackware64-14.1/patches/packages/glibc-2.17-x86_64-11_slack14.1.txz ftp://ftp.slackware.com/pub/slackware/slackware64-14.1/patches/packages/glibc-i18n-2.17-x86_64-11_slack14.1.txz ftp://ftp.slackware.com/pub/slackware/slackware64-14.1/patches/packages/glibc-profile-2.17-x86_64-11_slack14.1.txz ftp://ftp.slackware.com/pub/slackware/slackware64-14.1/patches/packages/glibc-solibs-2.17-x86_64-11_slack14.1.txz Updated packages for Slackware -current: ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/a/glibc-solibs-2.23-i586-1.txz ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/l/glibc-2.23-i586-1.txz ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/l/glibc-i18n-2.23-i586-1.txz ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/l/glibc-profile-2.23-i586-1.txz Updated packages for Slackware x86_64 -current: ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/a/glibc-solibs-2.23-x86_64-1.txz ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/l/glibc-2.23-x86_64-1.txz ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/l/glibc-i18n-2.23-x86_64-1.txz ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/l/glibc-profile-2.23-x86_64-1.txz MD5 signatures: +-------------+ Slackware 14.1 packages: 4c56432d638adc8098661cfa818b5bc9 glibc-2.17-i486-11_slack14.1.txz 5c316d6b0a8970fe15fbdf2adff8de19 glibc-i18n-2.17-i486-11_slack14.1.txz a937d842e5ca3d0b125230c23285f8f4 glibc-profile-2.17-i486-11_slack14.1.txz 442f01d094d350612c1fb1fcb5e7fbe7 glibc-solibs-2.17-i486-11_slack14.1.txz Slackware x86_64 14.1 packages: eec88d584a79909ec79aae1c43c330d3 glibc-2.17-x86_64-11_slack14.1.txz d8b396eb6ada65d1555e3cf0fb8246c2 glibc-i18n-2.17-x86_64-11_slack14.1.txz e7deaabfe3e467cbde10ba5b7748bbbb glibc-profile-2.17-x86_64-11_slack14.1.txz 629c93f0e510d354ff66e61f1ebe8b67 glibc-solibs-2.17-x86_64-11_slack14.1.txz Slackware -current packages: b11873e4f851a600b57a2e7a2ac8f472 a/glibc-solibs-2.23-i586-1.txz 5116eec63fab5e7dbc58d27fecd48684 l/glibc-2.23-i586-1.txz ae9b8a8e4ead59aa398212d6893d7ddc l/glibc-i18n-2.23-i586-1.txz 61154e43ee4c0739dd5d3c4ce3b60ae6 l/glibc-profile-2.23-i586-1.txz Slackware x86_64 -current packages: c48a55c8a39dc8e17e04796e4f160bd0 a/glibc-solibs-2.23-x86_64-1.txz 36104e1a004b0e97d193c2132f18222d l/glibc-2.23-x86_64-1.txz e0415f66d17323c8f6df339cfd49051b l/glibc-i18n-2.23-x86_64-1.txz f5433793e9da696a60f2445559f1d33f l/glibc-profile-2.23-x86_64-1.txz Installation instructions: +------------------------+ Upgrade the packages as root: # upgradepkg glibc-*.txz +-----+ Slackware Linux Security Team http://slackware.com/gpg-key security@slackware.com +------------------------------------------------------------------------+ | To leave the slackware-security mailing list: | +------------------------------------------------------------------------+ | Send an email to majordomo@slackware.com with this text in the body of | | the email message: | | | | unsubscribe slackware-security | | | | You will get a confirmation message back containing instructions to | | complete the process. Please do not reply to this email address. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Note: the current version of the following document is available here: https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_n a-c04989404 SUPPORT COMMUNICATION - SECURITY BULLETIN Document ID: c04989404 Version: 1 HPSBGN03547 rev.1 - HPE Helion Eucalyptus Node Controller and other Helion Eucalyptus Components using glibc, Remote Arbitrary Code Execution NOTICE: The information in this Security Bulletin should be acted upon as soon as possible. Release Date: 2016-02-18 Last Updated: 2016-02-18 Potential Security Impact: Remote Arbitrary Code Execution Source: Hewlett Packard Enterprise, Product Security Response Team VULNERABILITY SUMMARY A security vulnerability in glibc has been addressed with HPE Helion Eucalyptus Node Controller and other Helion Eucalyptus components. The vulnerability could be exploited remotely resulting in arbitrary execution of code. - Helion Eucalyptus Node Controller (NC) components are confirmed to be affected by the vulnerability. Other Helion Eucalyptus components and pre-bundled service EMIs do not directly expose the vulnerability, but because glibc is a commonly used library on Linux, the exact exposure is hard to determine. Any software performing domain name resolution is potentially vulnerable. References: - CVE-2015-7547 - PSRT110035 SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed. - HPE Helion Eucalyptus 4.2.1 and earlier - HPE Helion Eucalyptus Service EMIs for Load Balancing and Imaging services package "eucalyptus-service-image-1.48-0.87.99" and earlier BACKGROUND CVSS 2.0 Base Metrics =========================================================== Reference Base Vector Base Score CVE-2015-7547 (AV:N/AC:H/Au:N/C:N/I:C/A:P) 6.1 =========================================================== Information on CVSS is documented in HP Customer Notice: HPSN-2008-002 RESOLUTION HPE has made the following software updates and workaround information available to resolve the vulnerability with glibc for HPE Helion Eucalyptus. + All hosts running HPE Helion Eucalyptus services should be upgraded to the latest glibc. Updated glibc packages are available for RHEL and CentOS: https://access.redhat.com/articles/2161461 **RHEL Note:** After following the guidelines for RHEL, a reboot is the safest and recommended way to ensure that updates takes effect for all services. + New Helion Eucalyptus Service EMIs will be made available soon in the Eucalyptus software repositories at: http://downloads.eucalyptus.com/software/eucalyptus/4.2/ **Note:** This security bulletin will be revised when those updates are available. Until Helion Eucalyptus EMI updates are available, the following workaround is available to update the instances launched from eucalyptus-service-image-1.48-0.87.99 and earlier to the latest glibc packages. **Workaround:** As a cloud administrator: 1) create an update-glibc script with the following content: #! /bin/bash yum update -y glibc 2) set the following cloud properties to use that script on instance start: euctl services.imaging.worker.init_script=@update-glibc euctl services.loadbalancing.worker.init_script=@update-glibc This script will be automatically executed for each of the new instances started from the service image. For instances that are already running, the cloud administrator will need to terminate them and start again for the script to take effect. More specifically, for the Load Balancing service, the cloud admin needs to find all instances running under the "(eucalyptus)loadbalancing" account: # euare-accountlist | grep loadbalancing (eucalyptus)loadbalancing <accnt_id> # euca-describe-instances verbose | grep <accnt_id> And terminate them using euca-terminate-instances. New updated instances will be started automatically after that. For the Imaging Service, the imaging worker needs to be terminated and started again: # esi-manage-stack -a delete imaging # esi-manage-stack -a create imaging HISTORY Version:1 (rev.1) - 17 February 2016 Initial release Third Party Security Patches: Third party security patches that are to be installed on systems running Hewlett Packard Enterprise (HPE) software products should be applied in accordance with the customer's patch management policy. Support: For issues about implementing the recommendations of this Security Bulletin, contact normal HPE Services support channel. For other issues about the content of this Security Bulletin, send e-mail to security-alert@hpe.com. Report: To report a potential security vulnerability with any HPE supported product, send Email to: security-alert@hpe.com Subscribe: To initiate a subscription to receive future HPE Security Bulletin alerts via Email: http://www.hpe.com/support/Subscriber_Choice Security Bulletin Archive: A list of recently released Security Bulletins is available here: http://www.hpe.com/support/Security_Bulletin_Archive Software Product Category: The Software Product Category is represented in the title by the two characters following HPSB. 3C = 3COM 3P = 3rd Party Software GN = HPE General Software HF = HPE Hardware and Firmware MU = Multi-Platform Software NS = NonStop Servers OV = OpenVMS PV = ProCurve ST = Storage Software UX = HP-UX Copyright 2016 Hewlett Packard Enterprise Hewlett Packard Enterprise shall not be liable for technical or editorial errors or omissions contained herein. The information provided is provided "as is" without warranty of any kind. To the extent permitted by law, neither HP or its affiliates, subcontractors or suppliers will be liable for incidental,special or consequential damages including downtime cost; lost profits; damages relating to the procurement of substitute products or services; or damages for loss of data, or software restoration. The information in this document is subject to change without notice. Hewlett Packard Enterprise and the names of Hewlett Packard Enterprise products referenced herein are trademarks of Hewlett Packard Enterprise in the United States and other countries. Other product and company names mentioned herein may be trademarks of their respective owners. * An integer overflow was found in the __hcreate_r() function (CVE-2015-8778). Please review the CVEs referenced below for additional vulnerabilities that had already been fixed in previous versions of sys-libs/glibc, for which we have not issued a GLSA before. Workaround ========== A number of mitigating factors for CVE-2015-7547 have been identified. Please review the upstream advisory and references below. Resolution ========== All GNU C Library users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=sys-libs/glibc-2.21-r2" It is important to ensure that no running process uses the old glibc anymore. The easiest way to achieve that is by rebooting the machine after updating the sys-libs/glibc package. Note: Should you run into compilation failures while updating, please see bug 574948. References ========== [ 1 ] CVE-2013-7423 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-7423 [ 2 ] CVE-2014-0475 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-0475 [ 3 ] CVE-2014-0475 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-0475 [ 4 ] CVE-2014-5119 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-5119 [ 5 ] CVE-2014-6040 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-6040 [ 6 ] CVE-2014-7817 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-7817 [ 7 ] CVE-2014-8121 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-8121 [ 8 ] CVE-2014-9402 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-9402 [ 9 ] CVE-2015-1472 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-1472 [ 10 ] CVE-2015-1781 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-1781 [ 11 ] CVE-2015-7547 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7547 [ 12 ] CVE-2015-8776 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8776 [ 13 ] CVE-2015-8778 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8778 [ 14 ] CVE-2015-8779 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8779 [ 15 ] Google Online Security Blog: "CVE-2015-7547: glibc getaddrinfo stack-based buffer overflow" https://googleonlinesecurity.blogspot.de/2016/02/cve-2015-7547-glibc-geta= ddrinfo-stack.html Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201602-02 Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org. License ======= Copyright 2016 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.5

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

overflow, arbitrary

EXPLOIT AVAILABILITY

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

HP

SOURCES

LAST UPDATE DATE

2026-02-07T22:23:15.015000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE