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Gentoo Linux Security Advisory GLSA 200511-10 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: RAR: Format string and buffer overflow vulnerabilities |
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Date: November 13, 2005 |
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Bugs: #111926 |
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ID: 200511-10 |
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Synopsis |
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======== |
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|
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RAR contains a format string error and a buffer overflow vulnerability |
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that may be used to execute arbitrary code. |
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|
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Background |
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========== |
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|
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RAR is a powerful archive manager that can decompress RAR, ZIP and |
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other files, and can create new archives in RAR and ZIP file format. |
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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-arch/rar < 3.5.1 >= 3.5.1 |
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|
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Description |
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=========== |
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|
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Tan Chew Keong reported about two vulnerabilities found in RAR: |
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|
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* A format string error exists when displaying a diagnostic error |
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message that informs the user of an invalid filename in an UUE/XXE |
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encoded file. |
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* Some boundary errors in the processing of malicious ACE archives |
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can be exploited to cause a buffer overflow. |
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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 these vulnerabilities by enticing a |
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user to: |
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* decode a specially crafted UUE/XXE file, or |
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* extract a malicious ACE archive containing a file with an overly |
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long filename. |
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When the user performs these actions, the arbitrary code of the |
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attacker's choice will be executed. |
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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 RAR users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-arch/rar-3.5.1" |
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References |
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========== |
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|
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[ 1 ] RAR Release Notes |
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http://www.rarlabs.com/rarnew.htm |
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[ 2 ] Secunia Research 11/10/2005 |
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http://secunia.com/secunia_research/2005-53/advisory/ |
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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-200511-10.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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http://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2005 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/2.0 |
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