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.
Credits
Vulnerability reported by Tavis Ormandy and Will Drewry.
ChangeLog
2007-11-06 : Initial release
2008-04-28 : Updated Advisory
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