libxml2: Remotely exploitable buffer overflow

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200411-05 / libxml2
Release Date	November 02, 2004
Latest Revision	November 02, 2004: 01
Impact	high
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
dev-libs/libxml2	< 2.6.15	>= 2.6.15	All supported architectures

Related bugreports: #69154

Synopsis

libxml2 contains multiple buffer overflows which could lead to the execution of arbitrary code.

2. Impact Information

Background

libxml2 is an XML parsing library written in C.

Description

Multiple buffer overflows have been detected in the nanoftp and nanohttp modules. These modules are responsible for parsing URLs with ftp information, and resolving names via DNS.

Impact

An attacker could exploit an application that uses libxml2 by forcing it to parse a specially-crafted XML file, potentially causing remote execution of arbitrary code.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All libxml2 users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libxml2-2.6.15"

4. References

Page updated November 02, 2004

Summary: This is a Gentoo Linux Security Advisory

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