libpcre: Heap integer overflow

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200508-17 / libpcre
Release Date	August 25, 2005
Latest Revision	August 25, 2005: 01
Impact	high
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
dev-libs/libpcre	< 6.3	>= 6.3	All supported architectures

Related bugreports: #103337

Synopsis

libpcre is vulnerable to a heap integer overflow, possibly leading to the execution of arbitrary code.

2. Impact Information

Background

libpcre is a library providing functions for Perl-compatible regular expressions.

Description

libpcre fails to check certain quantifier values in regular expressions for sane values.

Impact

An attacker could possibly exploit this vulnerability to execute arbitrary code by sending specially crafted regular expressions to applications making use of the libpcre library.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All libpcre users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libpcre-6.3"

4. References

Page updated August 25, 2005

Summary: This is a Gentoo Linux Security Advisory

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