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Gentoo Linux Security Advisory GLSA 201210-05 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: Bash: Multiple vulnerabilities |
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Date: October 20, 2012 |
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Bugs: #251319, #431850 |
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ID: 201210-05 |
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Synopsis |
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======== |
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|
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Two vulnerabilities have been found in Bash, the worst of which may |
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allow execution of arbitrary code. |
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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_p37 >= 4.2_p37 |
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|
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Description |
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=========== |
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|
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Two vulnerabilities have been found in Bash: |
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|
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* Bash example scripts do not handle temporary files securely |
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(CVE-2008-5374). |
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* Improper bounds checking in Bash could cause a stack-based buffer |
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overflow (CVE-2012-3410). |
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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 entice a user to open a specially crafted Bash |
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script, possibly resulting in execution of arbitrary code with the |
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privileges of the process, or a Denial of Service condition of the Bash |
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executable. |
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|
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A local attacker may be able to perform symlink attacks to overwrite |
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arbitrary files with the privileges of the user running the application |
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or bypass shell access restrictions. |
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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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Resolution |
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========== |
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All Bash users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-shells/bash-4.2_p37" |
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|
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References |
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========== |
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[ 1 ] CVE-2008-5374 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2008-5374 |
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[ 2 ] CVE-2012-3410 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3410 |
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|
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Availability |
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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-201210-05.xml |
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Concerns? |
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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 2012 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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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 |
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