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Gentoo Linux Security Advisory GLSA 200509-08 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: Python: Heap overflow in the included PCRE library |
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Date: September 12, 2005 |
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Bugs: #104009 |
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ID: 200509-08 |
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Synopsis |
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======== |
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|
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The "re" Python module is vulnerable to a heap overflow, possibly |
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leading to the execution of arbitrary code. |
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|
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Background |
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========== |
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|
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Python is an interpreted, interactive, object-oriented, cross-platform |
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programming language. The "re" Python module provides regular |
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expression functions. |
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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 dev-lang/python < 2.3.5-r2 >= 2.3.5-r2 |
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|
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Description |
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=========== |
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|
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The "re" Python module makes use of a private copy of libpcre which is |
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subject to an integer overflow leading to a heap overflow (see GLSA |
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200508-17). |
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|
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Impact |
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====== |
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|
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An attacker could target a Python-based web application (or SUID |
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application) that would use untrusted data as regular expressions, |
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potentially resulting in the execution of arbitrary code (or privilege |
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escalation). |
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|
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Workaround |
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========== |
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|
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Python users that don't run any Python web application or SUID |
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application (or that run one that wouldn't use untrusted inputs as |
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regular expressions) are not affected by this issue. |
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|
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Resolution |
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========== |
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All Python users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=dev-lang/python-2.3.5-r2" |
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|
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References |
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========== |
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|
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[ 1 ] CAN-2005-2491 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2491 |
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[ 2 ] GLSA 200508-17 |
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http://www.gentoo.org/security/en/glsa/glsa-200508-17.xml |
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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-200509-08.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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|
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License |
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======= |
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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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http://creativecommons.org/licenses/by-sa/2.0 |
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