*** This bug is a security vulnerability ***
Public security bug reported:
The following commit appeared in 5.14.3 and Debian 5.14.3-14:
commit 5ee2604e72cdd836101f279f8f9e89243c7f0097
Author: Andy Dougherty <dough...@lafayette.edu>
Date: Thu Sep 27 09:52:18 2012 -0400
avoid calling memset with a negative count
Poorly written perl code that allows an attacker to specify the count to
perl's 'x' string repeat operator can already cause a memory exhaustion
denial-of-service attack. A flaw in versions of perl before 5.15.5 can
escalate that into a heap buffer overrun; coupled with versions of glibc
before 2.16, it possibly allows the execution of arbitrary code.
The flaw addressed to this commit has been assigned identifier
CVE-2012-5195.
http://www.nntp.perl.org/group/perl.perl5.porters/2012/10/msg193886.html
http://www.nntp.perl.org/group/perl.perl5.porters/2012/10/msg194057.html
http://patch-tracker.debian.org/patch/series/view/perl/5.14.2-14/fixes/string_repeat_overrun.diff
** Affects: perl (Ubuntu)
Importance: Undecided
Status: New
** Information type changed from Private Security to Public Security
** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2012-5195
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https://bugs.launchpad.net/bugs/1069034
Title:
[CVE-2012-5195] heap buffer overrun with the 'x' string repeat
operator
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