ID

VAR-201708-0036

CVE

CVE-2015-7853

TITLE

NTP  Buffer Error Vulnerability

DESCRIPTION

The datalen parameter in the refclock driver in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to execute arbitrary code or cause a denial of service (crash) via a negative input value. NTP Is vulnerable to a buffer error.Information is obtained, information is tampered with, and service is disrupted (DoS) It may be put into a state. Pillow is a Python-based image processing library. There is currently no information about this vulnerability, please feel free to follow CNNVD or manufacturer announcements. Network Time Protocol is prone to a local buffer-overflow vulnerability because it fails to perform adequate boundary checks on user-supplied data. An attacker may exploit this issue to execute arbitrary code within the context of the application. Failed exploit attempts will likely cause denial-of-service conditions. Versions prior to NTP 4.2.8p4 and 4.3.x prior to 4.3.77 are vulnerable. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201607-15 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: NTP: Multiple vulnerabilities Date: July 20, 2016 Bugs: #563774, #572452, #581528, #584954 ID: 201607-15 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Multiple vulnerabilities have been found in NTP, the worst of which could lead to Denial of Service. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-misc/ntp < 4.2.8_p8 >= 4.2.8_p8 Description =========== Multiple vulnerabilities have been discovered in NTP. Please review the CVE identifiers referenced below for details. Resolution ========== All NTP users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-misc/ntp-4.2.8_p8" References ========== [ 1 ] CVE-2015-7691 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7691 [ 2 ] CVE-2015-7692 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7692 [ 3 ] CVE-2015-7701 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7701 [ 4 ] CVE-2015-7702 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7702 [ 5 ] CVE-2015-7703 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7703 [ 6 ] CVE-2015-7704 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7704 [ 7 ] CVE-2015-7705 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7705 [ 8 ] CVE-2015-7848 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7848 [ 9 ] CVE-2015-7849 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7849 [ 10 ] CVE-2015-7850 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7850 [ 11 ] CVE-2015-7851 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7851 [ 12 ] CVE-2015-7852 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7852 [ 13 ] CVE-2015-7853 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7853 [ 14 ] CVE-2015-7854 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7854 [ 15 ] CVE-2015-7855 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7855 [ 16 ] CVE-2015-7871 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7871 [ 17 ] CVE-2015-7973 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7973 [ 18 ] CVE-2015-7974 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7974 [ 19 ] CVE-2015-7975 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7975 [ 20 ] CVE-2015-7976 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7976 [ 21 ] CVE-2015-7977 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7977 [ 22 ] CVE-2015-7978 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7978 [ 23 ] CVE-2015-7979 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7979 [ 24 ] CVE-2015-8138 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8138 [ 25 ] CVE-2015-8139 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8139 [ 26 ] CVE-2015-8140 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8140 [ 27 ] CVE-2015-8158 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8158 [ 28 ] CVE-2016-1547 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1547 [ 29 ] CVE-2016-1548 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1548 [ 30 ] CVE-2016-1549 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1549 [ 31 ] CVE-2016-1550 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1550 [ 32 ] CVE-2016-1551 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1551 [ 33 ] CVE-2016-2516 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2516 [ 34 ] CVE-2016-2517 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2517 [ 35 ] CVE-2016-2518 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2518 [ 36 ] CVE-2016-2519 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2519 [ 37 ] CVE-2016-4953 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-4953 [ 38 ] CVE-2016-4954 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-4954 [ 39 ] CVE-2016-4955 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-4955 [ 40 ] CVE-2016-4956 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-4956 [ 41 ] CVE-2016-4957 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-4957 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201607-15 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 . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ============================================================================= FreeBSD-SA-15:25.ntp Security Advisory The FreeBSD Project Topic: Multiple vulnerabilities of ntp Category: contrib Module: ntp Announced: 2015-10-26 Credits: Network Time Foundation Affects: All supported versions of FreeBSD. Corrected: 2015-10-26 11:35:40 UTC (stable/10, 10.2-STABLE) 2015-10-26 11:36:55 UTC (releng/10.2, 10.2-RELEASE-p6) 2015-10-26 11:37:31 UTC (releng/10.1, 10.1-RELEASE-p23) 2015-10-26 11:36:40 UTC (stable/9, 9.3-STABLE) 2015-10-26 11:42:25 UTC (releng/9.3, 9.3-RELEASE-p29) CVE Name: CVE-2015-7701, CVE-2015-7702, CVE-2015-7703, CVE-2015-7704, CVE-2015-7848, CVE-2015-7849, CVE-2015-7850, CVE-2015-7851, CVE-2015-7852, CVE-2015-7853, CVE-2015-7854, CVE-2015-7855, CVE-2015-7871 For general information regarding FreeBSD Security Advisories, including descriptions of the fields above, security branches, and the following sections, please visit https://security.FreeBSD.org/. I. Background The ntpd(8) daemon is an implementation of the Network Time Protocol (NTP) used to synchronize the time of a computer system to a reference time source. II. Problem Description Crypto-NAK packets can be used to cause ntpd(8) to accept time from an unauthenticated ephemeral symmetric peer by bypassing the authentication required to mobilize peer associations. [CVE-2015-7871] FreeBSD 9.3 and 10.1 are not affected. If ntpd(8) is fed a crafted mode 6 or mode 7 packet containing an unusual long data value where a network address is expected, the decodenetnum() function will abort with an assertion failure instead of simply returning a failure condition. [CVE-2015-7855] If ntpd(8) is configured to allow remote configuration, and if the (possibly spoofed) source IP address is allowed to send remote configuration requests, and if the attacker knows the remote configuration password or if ntpd(8) was configured to disable authentication, then an attacker can send a set of packets to ntpd(8) that may cause it to crash, with the hypothetical possibility of a small code injection. [CVE-2015-7854] A negative value for the datalen parameter will overflow a data buffer. NTF's ntpd(8) driver implementations always set this value to 0 and are therefore not vulnerable to this weakness. If you are running a custom refclock driver in ntpd(8) and that driver supplies a negative value for datalen (no custom driver of even minimal competence would do this) then ntpd would overflow a data buffer. It is even hypothetically possible in this case that instead of simply crashing ntpd the attacker could effect a code injection attack. [CVE-2015-7853] If an attacker can figure out the precise moment that ntpq(8) is listening for data and the port number it is listening on or if the attacker can provide a malicious instance ntpd(8) that victims will connect to then an attacker can send a set of crafted mode 6 response packets that, if received by ntpq(8), can cause ntpq(8) to crash. [CVE-2015-7852] If ntpd(8) is configured to allow remote configuration, and if the (possibly spoofed) IP address is allowed to send remote configuration requests, and if the attacker knows the remote configuration password or if ntpd(8) was configured to disable authentication, then an attacker can send a set of packets to ntpd that may cause ntpd(8) to overwrite files. [CVE-2015-7851]. The default configuration of ntpd(8) within FreeBSD does not allow remote configuration. If ntpd(8) is configured to allow remote configuration, and if the (possibly spoofed) source IP address is allowed to send remote configuration requests, and if the attacker knows the remote configuration password or if ntpd(8) was configured to disable authentication, then an attacker can send a set of packets to ntpd that will cause it to crash and/or create a potentially huge log file. Specifically, the attacker could enable extended logging, point the key file at the log file, and cause what amounts to an infinite loop. [CVE-2015-7850]. The default configuration of ntpd(8) within FreeBSD does not allow remote configuration. If ntpd(8) is configured to allow remote configuration, and if the (possibly spoofed) source IP address is allowed to send remote configuration requests, and if the attacker knows the remote configuration password or if ntpd was configured to disable authentication, then an attacker can send a set of packets to ntpd that may cause a crash or theoretically perform a code injection attack. [CVE-2015-7849]. The default configuration of ntpd(8) within FreeBSD does not allow remote configuration. If ntpd(8) is configured to enable mode 7 packets, and if the use of mode 7 packets is not properly protected thru the use of the available mode 7 authentication and restriction mechanisms, and if the (possibly spoofed) source IP address is allowed to send mode 7 queries, then an attacker can send a crafted packet to ntpd that will cause it to crash. [CVE-2015-7848]. The default configuration of ntpd(8) within FreeBSD does not allow mode 7 packets. If ntpd(8) is configured to use autokey, then an attacker can send packets to ntpd that will, after several days of ongoing attack, cause it to run out of memory. [CVE-2015-7701]. The default configuration of ntpd(8) within FreeBSD does not use autokey. If ntpd(8) is configured to allow for remote configuration, and if the (possibly spoofed) source IP address is allowed to send remote configuration requests, and if the attacker knows the remote configuration password, it's possible for an attacker to use the "pidfile" or "driftfile" directives to potentially overwrite other files. [CVE-2015-5196]. The default configuration of ntpd(8) within FreeBSD does not allow remote configuration An ntpd(8) client that honors Kiss-of-Death responses will honor KoD messages that have been forged by an attacker, causing it to delay or stop querying its servers for time updates. Also, an attacker can forge packets that claim to be from the target and send them to servers often enough that a server that implements KoD rate limiting will send the target machine a KoD response to attempt to reduce the rate of incoming packets, or it may also trigger a firewall block at the server for packets from the target machine. For either of these attacks to succeed, the attacker must know what servers the target is communicating with. An attacker can be anywhere on the Internet and can frequently learn the identity of the target's time source by sending the target a time query. [CVE-2015-7704] The fix for CVE-2014-9750 was incomplete in that there were certain code paths where a packet with particular autokey operations that contained malicious data was not always being completely validated. Receipt of these packets can cause ntpd to crash. [CVE-2015-7702]. The default configuration of ntpd(8) within FreeBSD does not use autokey. III. Impact An attacker which can send NTP packets to ntpd(8), which uses cryptographic authentication of NTP data, may be able to inject malicious time data causing the system clock to be set incorrectly. [CVE-2015-7871] An attacker which can send NTP packets to ntpd(8), can block the communication of the daemon with time servers, causing the system clock not being synchronized. [CVE-2015-7704] An attacker which can send NTP packets to ntpd(8), can remotely crash the daemon, sending malicious data packet. [CVE-2015-7855] [CVE-2015-7854] [CVE-2015-7853] [CVE-2015-7852] [CVE-2015-7849] [CVE-2015-7848] An attacker which can send NTP packets to ntpd(8), can remotely trigger the daemon to overwrite its configuration files. [CVE-2015-7851] [CVE-2015-5196] IV. Workaround No workaround is available, but systems not running ntpd(8) are not affected. Network administrators are advised to implement BCP-38, which helps to reduce risk associated with the attacks. V. Solution Perform one of the following: 1) Upgrade your vulnerable system to a supported FreeBSD stable or release / security branch (releng) dated after the correction date. The ntpd service has to be restarted after the update. A reboot is recommended but not required. 2) To update your vulnerable system via a binary patch: Systems running a RELEASE version of FreeBSD on the i386 or amd64 platforms can be updated via the freebsd-update(8) utility: # freebsd-update fetch # freebsd-update install The ntpd service has to be restarted after the update. A reboot is recommended but not required. 3) To update your vulnerable system via a source code patch: The following patches have been verified to apply to the applicable FreeBSD release branches. a) Download the relevant patch from the location below, and verify the detached PGP signature using your PGP utility. [FreeBSD 10.2] # fetch https://security.FreeBSD.org/patches/SA-15:25/ntp-102.patch.bz2 # bunzip2 ntp-102.patch.bz2 # fetch https://security.FreeBSD.org/patches/SA-15:25/ntp-102.patch.asc # gpg --verify ntp-102.patch.asc [FreeBSD 10.1] # fetch https://security.FreeBSD.org/patches/SA-15:25/ntp-101.patch.bz2 # bunzip2 ntp-101.patch.bz2 # fetch https://security.FreeBSD.org/patches/SA-15:25/ntp-101.patch.asc # gpg --verify ntp-101.patch.asc [FreeBSD 9.3] # fetch https://security.FreeBSD.org/patches/SA-15:25/ntp-93.patch.bz2 # bunzip2 ntp-93.patch.bz2 # fetch https://security.FreeBSD.org/patches/SA-15:25/ntp-93.patch.asc # gpg --verify ntp-93.patch.asc b) Apply the patch. Execute the following commands as root: # cd /usr/src # patch < /path/to/patch # find contrib/ntp -type f -empty -delete c) Recompile the operating system using buildworld and installworld as described in https://www.FreeBSD.org/handbook/makeworld.html. d) For 9.3-RELEASE and 10.1-RELEASE an update to /etc/ntp.conf is recommended, which can be done with help of the mergemaster(8) tool on 9.3-RELEASE and with help of the etcupdate(8) tool on 10.1-RELEASE. Restart the ntpd(8) daemon, or reboot the system. VI. Correction details The following list contains the correction revision numbers for each affected branch. Branch/path Revision - ------------------------------------------------------------------------- stable/9/ r289998 releng/9.3/ r290001 stable/10/ r289997 releng/10.1/ r290000 releng/10.2/ r289999 - ------------------------------------------------------------------------- To see which files were modified by a particular revision, run the following command, replacing NNNNNN with the revision number, on a machine with Subversion installed: # svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base Or visit the following URL, replacing NNNNNN with the revision number: https://svnweb.freebsd.org/base?view=revision&revision=NNNNNN VII. References https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7701 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7702 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7703 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7704 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7848 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7849 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7850 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7851 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7852 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7853 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7854 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7855 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7871 The latest revision of this advisory is available at https://security.FreeBSD.org/advisories/FreeBSD-SA-15:25.ntp.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJWLhOJAAoJEO1n7NZdz2rn91wP/2GwEt1boNQq2a7nYzv/mS5D sYKkIi7o+2yr2BLXvtc3O7c9QC3/YeGsza9DTRqndcY572SWvRgtkFstMTTm8IV/ RVlIE40gVR3tex0zo7BiD7uKUrxWxWcpwMbE5dzlE+vSybyyj0dSSkwUHJjrbJoA RmyNuEEUhQn5sRCg6qJv/PLp2G7BcYAasKScukjm7QnLP2kq/tvM9mcqwfh2tadM 7kbf8uq+ykvsRzctaDnxQaB5+zJxBQYJjBelxQfIkNek0XGfdj3sRwISeFznbllq mOLTIBaFiuEtHtusO7MKKavMgS5CQJOvuuvd/l3NY1MnxC6X/1SWig9KIKDIn/hv q8dsnq7LLx+tO6Cv4Dub7EbC2ZP3xXGOC4Ie02z8bTZnbX7iwyPUidQQqtU9ra15 rxzFcZnBxu+yyMNJVsV2qVV/r9OycgKxWlEELC1wYrK9fKfvLdA5aEGjDeU1Z+s6 JS2zKr0t4F2bMrCsjYP1lQD8sHkCVjwJk+IJU/slcwSajDjBNlMH0yBxGYE1ETIZ qMF7/PAkLe8V78pdYmXw9pcaPyhI+ihPLnNrdhX8AI2RX5jDK7IuUNJeUM04UrVB 8N+mMwgamcuCPWNNyXaL0bz21fexZOuhHmU+B8Yn3SFX5O5b/r9gGvrjo8ei8jOk EUlBT3ViDhHNrI7PTaiI =djPm -----END PGP SIGNATURE----- . ============================================================================ Ubuntu Security Notice USN-2783-1 October 27, 2015 ntp vulnerabilities ============================================================================ A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 15.10 - Ubuntu 15.04 - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS Summary: Several security issues were fixed in NTP. (CVE-2015-5146) Miroslav Lichvar discovered that NTP incorrectly handled logconfig directives. (CVE-2015-5194) Miroslav Lichvar discovered that NTP incorrectly handled certain statistics types. (CVE-2015-5195) Miroslav Lichvar discovered that NTP incorrectly handled certain file paths. (CVE-2015-5196, CVE-2015-7703) Miroslav Lichvar discovered that NTP incorrectly handled certain packets. (CVE-2015-5219) Aanchal Malhotra, Isaac E. Cohen, and Sharon Goldberg discovered that NTP incorrectly handled restarting after hitting a panic threshold. (CVE-2015-7691, CVE-2015-7692, CVE-2015-7702) It was discovered that NTP incorrectly handled memory when processing certain autokey messages. (CVE-2015-7701) Aanchal Malhotra, Isaac E. Cohen, and Sharon Goldberg discovered that NTP incorrectly handled rate limiting. A remote attacker could possibly use this issue to cause clients to stop updating their clock. (CVE-2015-7704, CVE-2015-7705) Yves Younan discovered that NTP incorrectly handled logfile and keyfile directives. (CVE-2015-7850) Yves Younan and Aleksander Nikolich discovered that NTP incorrectly handled ascii conversion. (CVE-2015-7852) Yves Younan discovered that NTP incorrectly handled reference clock memory. (CVE-2015-7853) John D "Doug" Birdwell discovered that NTP incorrectly handled decoding certain bogus values. (CVE-2015-7855) Stephen Gray discovered that NTP incorrectly handled symmetric association authentication. (CVE-2015-7871) In the default installation, attackers would be isolated by the NTP AppArmor profile. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 15.10: ntp 1:4.2.6.p5+dfsg-3ubuntu8.1 Ubuntu 15.04: ntp 1:4.2.6.p5+dfsg-3ubuntu6.2 Ubuntu 14.04 LTS: ntp 1:4.2.6.p5+dfsg-3ubuntu2.14.04.5 Ubuntu 12.04 LTS: ntp 1:4.2.6.p3+dfsg-1ubuntu3.6 In general, a standard system update will make all the necessary changes. References: http://www.ubuntu.com/usn/usn-2783-1 CVE-2015-5146, CVE-2015-5194, CVE-2015-5195, CVE-2015-5196, CVE-2015-5219, CVE-2015-5300, CVE-2015-7691, CVE-2015-7692, CVE-2015-7701, CVE-2015-7702, CVE-2015-7703, CVE-2015-7704, CVE-2015-7705, CVE-2015-7850, CVE-2015-7852, CVE-2015-7853, CVE-2015-7855, CVE-2015-7871 Package Information: https://launchpad.net/ubuntu/+source/ntp/1:4.2.6.p5+dfsg-3ubuntu8.1 https://launchpad.net/ubuntu/+source/ntp/1:4.2.6.p5+dfsg-3ubuntu6.2 https://launchpad.net/ubuntu/+source/ntp/1:4.2.6.p5+dfsg-3ubuntu2.14.04.5 https://launchpad.net/ubuntu/+source/ntp/1:4.2.6.p3+dfsg-1ubuntu3.6 . Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to create a denial of service (DoS) condition or modify the time being advertised by a device acting as a network time protocol (NTP) server. On October 21st, 2015, NTP.org released a security advisory detailing 13 issues regarding multiple DoS vulnerabilities, information disclosure vulnerabilities, and logic issues that may result in an attacker gaining the ability to modify an NTP server's advertised time. The vulnerabilities covered in this document are as follows: CVE-2015-7691 - Denial of Service AutoKey Malicious Message CVE-2015-7692 - Denial of Service AutoKey Malicious Message CVE-2015-7701 - Denial of Service CRYPTO_ASSOC Memory Leak CVE-2015-7702 - Denial of Service AutoKey Malicious Message CVE-2015-7703 - Configuration Directive File Overwrite Vulnerability CVE-2015-7704 - Denial of Service by Spoofed Kiss-o'-Death CVE-2015-7705 - Denial of Service by Priming the Pump CVE-2015-7848 - Network Time Protocol ntpd multiple integer overflow read access violations CVE-2015-7849 - Network Time Protocol Trusted Keys Memory Corruption Vulnerability CVE-2015-7850 - Network Time Protocol Remote Configuration Denial of Service Vulnerability CVE-2015-7851 - Network Time Protocol ntpd saveconfig Directory Traversal Vulnerability CVE-2015-7852 - Network Time Protocol ntpq atoascii Memory Corruption Vulnerability CVE-2015-7853 - Network Time Protocol Reference Clock Memory Corruption Vulnerability CVE-2015-7854 - Network Time Protocol Password Length Memory Corruption Vulnerability CVE-2015-7855 - Denial of Service Long Control Packet Message CVE-2015-7871 - NAK to the Future: NTP Symmetric Association Authentication Bypass Vulnerability Additional details on each of the vulnerabilities can be found at the following links: Official Security Advisory from ntp.org: http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities Boston University: http://www.cs.bu.edu/~goldbe/NTPattack.html Cisco TALOS: http://talosintel.com/vulnerability-reports/ Cisco will release software updates that address these vulnerabilities. Workarounds that mitigate one or more of the vulnerabilities may be available for certain products, please see the individual Cisco Bug IDs for details. Here are the details from the Slackware 14.1 ChangeLog: +--------------------------+ patches/packages/ntp-4.2.8p4-i486-1_slack14.1.txz: Upgraded. In addition to bug fixes and enhancements, this release fixes several low and medium severity vulnerabilities. For more information, see: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9750 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5196 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7691 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7692 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7701 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7702 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7704 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7705 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7848 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7849 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7850 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7851 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7852 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7853 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7854 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7855 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7871 (* Security fix *) +--------------------------+ 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 package for Slackware 13.0: ftp://ftp.slackware.com/pub/slackware/slackware-13.0/patches/packages/ntp-4.2.8p4-i486-1_slack13.0.txz Updated package for Slackware x86_64 13.0: ftp://ftp.slackware.com/pub/slackware/slackware64-13.0/patches/packages/ntp-4.2.8p4-x86_64-1_slack13.0.txz Updated package for Slackware 13.1: ftp://ftp.slackware.com/pub/slackware/slackware-13.1/patches/packages/ntp-4.2.8p4-i486-1_slack13.1.txz Updated package for Slackware x86_64 13.1: ftp://ftp.slackware.com/pub/slackware/slackware64-13.1/patches/packages/ntp-4.2.8p4-x86_64-1_slack13.1.txz Updated package for Slackware 13.37: ftp://ftp.slackware.com/pub/slackware/slackware-13.37/patches/packages/ntp-4.2.8p4-i486-1_slack13.37.txz Updated package for Slackware x86_64 13.37: ftp://ftp.slackware.com/pub/slackware/slackware64-13.37/patches/packages/ntp-4.2.8p4-x86_64-1_slack13.37.txz Updated package for Slackware 14.0: ftp://ftp.slackware.com/pub/slackware/slackware-14.0/patches/packages/ntp-4.2.8p4-i486-1_slack14.0.txz Updated package for Slackware x86_64 14.0: ftp://ftp.slackware.com/pub/slackware/slackware64-14.0/patches/packages/ntp-4.2.8p4-x86_64-1_slack14.0.txz Updated package for Slackware 14.1: ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/ntp-4.2.8p4-i486-1_slack14.1.txz Updated package for Slackware x86_64 14.1: ftp://ftp.slackware.com/pub/slackware/slackware64-14.1/patches/packages/ntp-4.2.8p4-x86_64-1_slack14.1.txz Updated package for Slackware -current: ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/ntp-4.2.8p4-i586-1.txz Updated package for Slackware x86_64 -current: ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/n/ntp-4.2.8p4-x86_64-1.txz MD5 signatures: +-------------+ Slackware 13.0 package: 21dd14178fea17a88c9326c8672ecefd ntp-4.2.8p4-i486-1_slack13.0.txz Slackware x86_64 13.0 package: 8647479b2007b92ff8598184f2275263 ntp-4.2.8p4-x86_64-1_slack13.0.txz Slackware 13.1 package: e0f122e8e271dc84db06202c03cc0288 ntp-4.2.8p4-i486-1_slack13.1.txz Slackware x86_64 13.1 package: db0aff04b72b3d8c96ca8c8e1ed36c05 ntp-4.2.8p4-x86_64-1_slack13.1.txz Slackware 13.37 package: 5914e43e886e5ff88fefd30083493e30 ntp-4.2.8p4-i486-1_slack13.37.txz Slackware x86_64 13.37 package: 4335c3bf2ae24afc5ad734e8d80b3e94 ntp-4.2.8p4-x86_64-1_slack13.37.txz Slackware 14.0 package: 39b05698797b638b67130e0b170e0a4b ntp-4.2.8p4-i486-1_slack14.0.txz Slackware x86_64 14.0 package: dcf4a56ba1d013ee1c9d0e624e158709 ntp-4.2.8p4-x86_64-1_slack14.0.txz Slackware 14.1 package: 1fd3a7beaf23303e2c211af377662614 ntp-4.2.8p4-i486-1_slack14.1.txz Slackware x86_64 14.1 package: 438c3185aa8ec20d1c2b5e51786e4d41 ntp-4.2.8p4-x86_64-1_slack14.1.txz Slackware -current package: 81bfb2fed450cb26a51b5e1cee0d33ed n/ntp-4.2.8p4-i586-1.txz Slackware x86_64 -current package: 8bae4ad633af40d4d54b7686e4b225f9 n/ntp-4.2.8p4-x86_64-1.txz Installation instructions: +------------------------+ Upgrade the package as root: # upgradepkg ntp-4.2.8p4-i486-1_slack14.1.txz Then, restart the NTP daemon: # sh /etc/rc.d/rc.ntpd restart +-----+ 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. 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AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

other

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Siemens reported these vulnerabilities to CISA.

SOURCES

LAST UPDATE DATE

2024-08-14T12:32:58.093000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE