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Gentoo Linux Security Advisory GLSA 201409-09 |
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http://security.gentoo.org/ |
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|
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Severity: High |
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Title: Bash: Code Injection |
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Date: September 24, 2014 |
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Bugs: #523592 |
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ID: 201409-09 |
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|
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Synopsis |
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======== |
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|
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A parsing flaw related to functions and environments in Bash could |
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allow attackers to inject code. |
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|
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Background |
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========== |
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|
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Bash is the standard GNU Bourne Again SHell. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 app-shells/bash < 4.2_p48 *>= 3.1_p18 |
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*>= 3.2_p52 |
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*>= 4.0_p39 |
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*>= 4.1_p12 |
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>= 4.2_p48 |
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|
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Description |
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=========== |
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|
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Stephane Chazelas reported that Bash incorrectly handles function |
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definitions, allowing attackers to inject arbitrary code. |
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|
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Impact |
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====== |
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|
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A remote attacker could exploit this vulnerability to execute arbitrary |
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commands even in restricted environments. |
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|
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Workaround |
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========== |
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There is no known workaround at this time. |
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|
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Resolution |
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========== |
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All Bash 3.1 users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-shells/bash-3.1_p18" |
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|
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All Bash 3.2 users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-shells/bash-3.2_p52" |
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|
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All Bash 4.0 users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-shells/bash-4.0_p39" |
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|
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All Bash 4.1 users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-shells/bash-4.1_p12" |
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|
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All Bash 4.2 users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-shells/bash-4.2_p48" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2014-6271 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-6271 |
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|
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Availability |
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============ |
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|
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-201409-09.xml |
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|
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Concerns? |
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========= |
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|
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users' machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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https://bugs.gentoo.org. |
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|
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License |
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======= |
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|
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Copyright 2014 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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http://creativecommons.org/licenses/by-sa/2.5 |