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>> Perl Regular Expression Engine UTF Parsing Code Execution Vulnerability
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Title : Perl Regular Expression Engine UTF Parsing Code Execution Vulnerability
VUPEN ID : VUPEN/ADV-2007-3724
CVE ID : CVE-2007-5116 - CVE-2008-1927
Rated as : Moderate Risk 
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2007-11-06
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A vulnerability has been identified in Perl, which could be exploited by attackers to cause a denial of service or compromise a vulnerable system. This issue is caused by an error in the regular expression engine when allocating memory while processing specially crafted input passed to a regular expression, which could be exploited by attackers to execute arbitrary code with the privileges of the user running Perl.
Note: A double free error is also present within the processing of regular expression containing UTF8 characters, which could be exploited to cause a denial of service or potentially execute arbitrary code.
Affected Products
Perl version 5.8.8 and prior
Solution
Upgrade to version 5.10.0 :
http://www.perl.org
References
http://www.vupen.com/english/advisories/2007/3724
https://rhn.redhat.com/errata/RHSA-2007-0966.html
Credits
Vulnerability reported by Tavis Ormandy and Will Drewry.
ChangeLog
2007-11-06 : Initial release
2008-04-28 : Updated Advisory
Vulnerability Management
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