perl is vulnerable to denial of service (DoS) attacks. The vulnerability exists through a heap-based buffer overflow in the Perl_repeatcpy function in util.c in Perl 5.12.x before 5.12.5, 5.14.x before 5.14.3, and 5.15.x before 15.15.5 allows context-dependent attackers to cause a denial of service (memory consumption and crash) or possibly execute arbitrary code via the ‘x’ string repeat operator.
kb.juniper.net/InfoCenter/index?page=content&id=JSA10673
kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
kb.juniper.net/InfoCenter/index?page=content&id=JSA10735
perl5.git.perl.org/perl.git/commit/2709980d5a193ce6f3a16f0d19879a6560dcde44
rhn.redhat.com/errata/RHSA-2013-0685.html
secunia.com/advisories/51457
secunia.com/advisories/55314
www.debian.org/security/2012/dsa-2586
www.mandriva.com/security/advisories?name=MDVSA-2013:113
www.nntp.perl.org/group/perl.perl5.porters/2012/10/msg193886.html
www.openwall.com/lists/oss-security/2012/10/26/2
www.openwall.com/lists/oss-security/2012/10/27/1
www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
www.securityfocus.com/bid/56287
www.ubuntu.com/usn/USN-1643-1
access.redhat.com/security/updates/classification/#moderate
rhn.redhat.com/errata/RHSA-2013-0685.html
wiki.mageia.org/en/Support/Advisories/MGASA-2012-0352