Joined: 12 May 2004
|Posted: Mon Nov 19, 2007 9:26 pm Post subject: [ GLSA 200711-28 ] Perl: Buffer overflow
|Gentoo Linux Security Advisory
Title: Perl: Buffer overflow (GLSA 200711-28)
Date: November 19, 2007
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 Wall.
Vulnerable: < 5.8.8-r4
Unaffected: >= 5.8.8-r4
Architectures: All supported architectures
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 regular expression.
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 Perl.
There is no known workaround at this time.
All Perl users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-lang/perl-5.8.8-r4"