Perl: Buffer overflow
Gentoo Linux Security Advisory
||GLSA 200711-28 / perl
||November 19, 2007
||November 19, 2007: 01
All supported architectures
A buffer overflow in the Regular Expression engine in Perl possibly allows
for the execution of arbitrary code.
Perl is a stable, cross-platform programming language created by Larry
Tavis Ormandy and Will Drewry (Google Security Team) discovered a
heap-based buffer overflow in the Regular Expression engine (regcomp.c)
that occurs when switching from byte to Unicode (UTF-8) characters in a
A remote attacker could either entice a user to compile a specially
crafted regular expression or actively compile it in case the script
accepts remote input of regular expressions, possibly leading to the
execution of arbitrary code with the privileges of the user running
There is no known workaround at this time.
All Perl users should upgrade to the latest version:
Code Listing 3.1: Resolution
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-lang/perl-5.8.8-r4"