https://bugzilla.redhat.com/show_bug.cgi?id=1187149
Bug ID: 1187149
Summary: CVE-2013-7422 perl: segmentation fault in S_regmatch
on negative backreference
Product: Security Response
Component: vulnerability
Keywords: Security
Severity: medium
Priority: medium
Assignee: security-response-t...@redhat.com
Reporter: mpr...@redhat.com
CC: cw...@alumni.drew.edu, iarn...@gmail.com,
jples...@redhat.com, ka...@ucw.cz,
perl-devel@lists.fedoraproject.org,
perl-maint-l...@redhat.com, ppi...@redhat.com,
psab...@redhat.com, rc040...@freenet.de,
rmegg...@redhat.com, tcall...@redhat.com
An integer underflow flaw was discovered in the way Perl parsed regular
expression backreferences. An attacker able to supply a crafted regular
expression to a Perl application could possibly use this flaw to crash that
application.
Reproducer:
$ perl -e '/\7777777777/'
Segmentation fault
Upstream issue:
https://rt.perl.org/Public/Bug/Display.html?id=119505
Upstream patch:
http://perl5.git.perl.org/perl.git/commitdiff/0c2990d652e985784f095bba4bc356481a66aa06
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