ID

VAR-201409-1148

CVE

CVE-2014-7187

TITLE

GNU Bash shell executes commands in exported functions in environment variables

DESCRIPTION

Off-by-one error in the read_token_word function in parse.y in GNU Bash through 4.3 bash43-026 allows remote attackers to cause a denial of service (out-of-bounds array access and application crash) or possibly have unspecified other impact via deeply nested for loops, aka the "word_lineno" issue. GNU Bash 4.3 and earlier contains a command injection vulnerability that may allow remote code execution. GNU Bash is prone to a local memory-corruption vulnerability. An attacker can exploit this issue to execute arbitrary code within the context of the affected application. Failed exploit attempts will result in a denial-of-service condition. GNU Bash 3.2 and later are vulnerable; prior versions may also be affected. ============================================================================ Ubuntu Security Notice USN-2364-1 September 27, 2014 bash vulnerabilities ============================================================================ A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS - Ubuntu 10.04 LTS Summary: Several security issues were fixed in Bash. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 LTS: bash 4.3-7ubuntu1.4 Ubuntu 12.04 LTS: bash 4.2-2ubuntu2.5 Ubuntu 10.04 LTS: bash 4.1-2ubuntu3.4 In general, a standard system update will make all the necessary changes. This vulnerability allows users that have been granted access to a shell script to escalate privilege and execute unrestricted commands at the same security level as the Bash script. No other firmware stream updates are planned beyond the NX-OS 5.x and 6.x versions listed below for the MDS products. This software versions 6.2(9a) has included the fixes for the vulnerability in HP StoreFabric C-series MDS switches which currently supporting NX-OS 6.X releases. This software version 5.2(8e) has included the fix for the vulnerability in HP C-series MDS switches which currently supporting NX-OS 5.X releases. This bulletin will be revised when these updates become available. MITIGATION INFORMATION If updating to a NX-OS version containing the fix is not currently possible, HP recommends the following steps to reduce the risk of this vulnerability: The "ssh" or "telnet" features may be disabled by the admin user. All MDS and Nexus 5K switches can function in this configuration. Access is available through the console port. HISTORY Version:1 (rev.1) - 6 November 2014 Initial release Version:2 (rev.2) - 8 December 2014 Updated with MDS releases Third Party Security Patches: Third party security patches that are to be installed on systems running HP software products should be applied in accordance with the customer's patch management policy. For other issues about the content of this Security Bulletin, send e-mail to security-alert@hp.com. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201410-01 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: Bash: Multiple vulnerabilities Date: October 04, 2014 Bugs: #523742, #524256 ID: 201410-01 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Multiple parsing flaws in Bash could allow remote attackers to inject code or cause a Denial of Service condition. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-shells/bash < 4.2_p52 *>= 3.1_p22 *>= 3.2_p56 *>= 4.0_p43 *>= 4.1_p16 >= 4.2_p52 Description =========== Florian Weimer, Todd Sabin, Michal Zalewski et al. discovered further parsing flaws in Bash. The unaffected Gentoo packages listed in this GLSA contain the official patches to fix the issues tracked as CVE-2014-6277, CVE-2014-7186, and CVE-2014-7187. Furthermore, the official patch known as "function prefix patch" is included which prevents the exploitation of CVE-2014-6278. Workaround ========== There is no known workaround at this time. Resolution ========== All Bash 3.1 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-shells/bash-3.1_p22:3.1" All Bash 3.2 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-shells/bash-3.2_p56:3.2" All Bash 4.0 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-shells/bash-4.0_p43:4.0" All Bash 4.1 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-shells/bash-4.1_p16:4.1" All Bash 4.2 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-shells/bash-4.2_p52" References ========== [ 1 ] CVE-2014-6277 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-6277 [ 2 ] CVE-2014-6278 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-6278 [ 3 ] CVE-2014-7186 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-7186 [ 4 ] CVE-2014-7187 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-7187 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201410-01.xml 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 2014 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 ===================================================================== Red Hat Security Advisory Synopsis: Important: bash Shift_JIS security update Advisory ID: RHSA-2014:1865-01 Product: RHEL S-JIS Service Advisory URL: https://rhn.redhat.com/errata/RHSA-2014-1865.html Issue date: 2014-11-17 CVE Names: CVE-2014-7169 CVE-2014-7186 CVE-2014-7187 ===================================================================== 1. Summary: Updated bash Shift_JIS packages that fix one security issue are now available for Red Hat Enterprise Linux 5.9 Extended Update Support. Red Hat Product Security has rated this update as having Important 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: SJIS (v. 5.9.z Server) - i386, ia64, x86_64 3. Description: The GNU Bourne Again shell (Bash) is a shell and command language interpreter compatible with the Bourne shell (sh). Bash is the default shell for Red Hat Enterprise Linux. Shift_JIS, also known as "SJIS", is a character encoding for the Japanese language. This package provides bash support for the Shift_JIS encoding. It was found that the fix for CVE-2014-6271 was incomplete, and Bash still allowed certain characters to be injected into other environments via specially crafted environment variables. An attacker could potentially use this flaw to override or bypass environment restrictions to execute shell commands. Certain services and applications allow remote unauthenticated attackers to provide environment variables, allowing them to exploit this issue. (CVE-2014-7169) Applications which directly create bash functions as environment variables need to be made aware of changes to the way names are handled by this update. Note that certain services, screen sessions, and tmux sessions may need to be restarted, and affected interactive users may need to re-login. Installing these updated packages without restarting services will address the vulnerability, but functionality may be impacted until affected services are restarted. For more information see the Knowledgebase article at https://access.redhat.com/articles/1200223 Note: Docker users are advised to use "yum update" within their containers, and to commit the resulting changes. For additional information on CVE-2014-6271 and CVE-2014-7169, refer to the aforementioned Knowledgebase article. All users who require Shift_JIS encoding support with Bash built-in functions are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1146319 - CVE-2014-7169 bash: code execution via specially-crafted environment (Incomplete fix for CVE-2014-6271) 6. Package List: SJIS (v. 5.9.z Server): Source: bash-3.2-32.el5_9.3.sjis.1.src.rpm i386: bash-3.2-32.el5_9.3.sjis.1.i386.rpm bash-debuginfo-3.2-32.el5_9.3.sjis.1.i386.rpm ia64: bash-3.2-32.el5_9.3.sjis.1.i386.rpm bash-3.2-32.el5_9.3.sjis.1.ia64.rpm bash-debuginfo-3.2-32.el5_9.3.sjis.1.i386.rpm bash-debuginfo-3.2-32.el5_9.3.sjis.1.ia64.rpm x86_64: bash-3.2-32.el5_9.3.sjis.1.x86_64.rpm bash-debuginfo-3.2-32.el5_9.3.sjis.1.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-2014-7169 https://access.redhat.com/security/cve/CVE-2014-7186 https://access.redhat.com/security/cve/CVE-2014-7187 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/articles/1200223 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2014 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFUajscXlSAg2UNWIIRAlnnAJ46tmMAMI0D6YRHybY5HJ7Mv77fIwCguKAJ ZiE90Rp/vQArh9+LpxnTqGI= =iltu -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . Open the PXE Configuration Utility on the HP Insight Control server deployment window Select Linux Managed from the Boot Menu options Click the Edit button. Clicking the Edit button displays the Edit Shared Menu Option window Uncheck the x86 option in Operating System and Processor Options and click OK. Release Date: 2014-12-16 Last Updated: 2014-12-16 Potential Security Impact: Remote code execution Source: Hewlett-Packard Company, HP Software Security Response Team VULNERABILITY SUMMARY A potential security vulnerability has been identified with HP Vertica. References: CVE-2014-6271 CVE-2014-6277 CVE-2014-6278 CVE-2014-7169 CVE-2014-7186 CVE-2014-7187 SSRT101827 SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed. HP Vertica AMI's and Virtual Machines prior to v7.1.1-0. CVSS 2.0 Base Metrics =========================================================== Reference Base Vector Base Score CVE-2014-6271 (AV:N/AC:L/Au:N/C:C/I:C/A:C) 10.0 CVE-2104-6277 (AV:N/AC:L/Au:N/C:C/I:C/A:C) 10.0 CVE-2104-6278 (AV:N/AC:L/Au:N/C:C/I:C/A:C) 10.0 CVE-2014-7169 (AV:N/AC:L/Au:N/C:C/I:C/A:C) 10.0 CVE-2014-7186 (AV:N/AC:L/Au:N/C:C/I:C/A:C) 10.0 CVE-2014-7187 (AV:N/AC:L/Au:N/C:C/I:C/A:C) 10.0 =========================================================== Information on CVSS is documented in HP Customer Notice: HPSN-2008-002 RESOLUTION We recommend installing Vertica v7.1.1-0 or subsequent, or manually installing a new version of Bash, such as Bash43-027. HP has released the following updates to resolve this vulnerability for HP Vertica products. Update to the latest VM image available at: https://my.vertica.com For customers using the AMI version HP Vertica Analytics platform, please install the latest image available at Amazon. HISTORY Version:1 (rev.1) - 16 December 2014 Initial release Support: For further information, contact normal HP Services support channel. Report: To report a potential security vulnerability with any HP supported product, send Email to: security-alert@hp.com It is strongly recommended that security related information being communicated to HP be encrypted using PGP, especially exploit information. To get the security-alert PGP key, please send an e-mail message as follows: To: security-alert@hp.com Subject: get key Subscribe: To initiate a subscription to receive future HP Security Bulletins via Email: http://h30046.www3.hp.com/driverAlertProfile.php?regioncode=NA&langcode=USENG &jumpid=in_SC-GEN__driverITRC&topiccode=ITRC On the web page: ITRC security bulletins and patch sign-up Under Step1: your ITRC security bulletins and patches - check ALL categories for which alerts are required and continue. Under Step2: your ITRC operating systems - verify your operating system selections are checked and save. To update an existing subscription: http://h30046.www3.hp.com/subSignIn.php Log in on the web page: Subscriber's choice for Business: sign-in. On the web page: Subscriber's Choice: your profile summary - use Edit Profile to update appropriate sections. To review previously published Security Bulletins visit: http://www.itrc.hp.com/service/cki/secBullArchive.do * The Software Product Category that this Security Bulletin relates to is represented by the 5th and 6th characters of the Bulletin number in the title: GN = HP General SW MA = HP Management Agents MI = Misc. 3rd Party SW MP = HP MPE/iX NS = HP NonStop Servers OV = HP OpenVMS PI = HP Printing & Imaging ST = HP Storage SW TL = HP Trusted Linux TU = HP Tru64 UNIX UX = HP-UX VV = HP VirtualVault System management and security procedures must be reviewed frequently to maintain system integrity. HP is continually reviewing and enhancing the security features of software products to provide customers with current secure solutions. "HP is broadly distributing this Security Bulletin in order to bring to the attention of users of the affected HP products the important security information contained in this Bulletin. HP recommends that all users determine the applicability of this information to their individual situations and take appropriate action. HP does not warrant that this information is necessarily accurate or complete for all user situations and, consequently, HP will not be responsible for any damages resulting from user's use or disregard of the information provided in this Bulletin. To the extent permitted by law, HP disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose, title and non-infringement." Copyright 2014 Hewlett-Packard Development Company, L.P. Hewlett-Packard Company 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 Company and the names of Hewlett-Packard products referenced herein are trademarks of Hewlett-Packard Company in the United States and other countries. Other product and company names mentioned herein may be trademarks of their respective owners. Please refer to the RESOLUTION section below for a list of impacted products

AFFECTED PRODUCTS