Xpdf, GPdf: New integer overflows

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Updated December 28, 2004

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200412-24 / Xpdf
Release Date	December 28, 2004
Latest Revision	December 28, 2004: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
app-text/xpdf	<= 3.00-r6	>= 3.00-r7	All supported architectures
app-text/gpdf	<= 2.8.1	>= 2.8.1-r1	All supported architectures

Related bugreports: #75191, #75201

Synopsis

New integer overflows were discovered in Xpdf, potentially resulting in the execution of arbitrary code. GPdf includes Xpdf code and therefore is vulnerable to the same issues.

2. Impact Information

Background

Xpdf is an open source viewer for Portable Document Format (PDF) files. GPdf is a Gnome-based PDF viewer that includes some Xpdf code.

Description

A new integer overflow issue was discovered in Xpdf's Gfx::doImage() function.

Impact

An attacker could entice an user to open a specially-crafted PDF file, potentially resulting in execution of arbitrary code with the rights of the user running Xpdf or GPdf.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All Xpdf users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-text/xpdf-3.00-r7"

All GPdf users should also upgrade to the latest version:

Code Listing 3.2: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-text/gpdf-2.8.1-r1"

4. References