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[ GLSA 200711-28 ] Perl: Buffer overflow
From: Pierre-Yves Rofes <py_at_nospam>Date: Mon Nov 19 2007 - 21:10:42 GMT
To: gentoo-announce@gentoo.org
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200711-28
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Synopsis
A buffer overflow in the Regular Expression engine in Perl possibly allows for the execution of arbitrary code.
Background
Perl is a stable, cross-platform programming language created by Larry Wall.
Affected packages
Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-lang/perl < 5.8.8-r4 >= 5.8.8-r4
Description
Tavis Ormandy and Will Drewry (Google Security Team) discovered a heap-based buffer overflow in the Regular Expression engine (regcomp.c) that occurs when switching from byte to Unicode (UTF-8) characters in a regular expression.
Impact
A remote attacker could either entice a user to compile a specially crafted regular expression or actively compile it in case the script accepts remote input of regular expressions, possibly leading to the execution of arbitrary code with the privileges of the user running Perl.
Workaround
There is no known workaround at this time.
Resolution
All Perl users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-lang/perl-5.8.8-r4"
References
[ 1 ] CVE-2007-5116
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5116
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200711-28.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 http://bugs.gentoo.org.
License
Copyright 2007 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
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