Perl Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability - CVE-2012-5195
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 39x39 string repeat operator.