Xpdf, CUPS: Multiple integer overflows

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200410-20 / Xpdf
Release Date	October 21, 2004
Latest Revision	November 06, 2004: 02
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
app-text/xpdf	<= 3.00-r4	>= 3.00-r5	All supported architectures
net-print/cups	<= 1.1.20-r4	>= 1.1.20-r5	All supported architectures

Related bugreports: #69662

Synopsis

Multiple integer overflows were discovered in Xpdf, potentially resulting in execution of arbitrary code upon viewing a malicious PDF file. CUPS 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. The Common UNIX Printing System (CUPS) is a cross-platform print spooler that includes some Xpdf code.

Description

Chris Evans discovered multiple integer overflow issues in Xpdf.

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. By enticing an user to directly print the PDF file to a CUPS printer, an attacker could also crash the CUPS spooler or execute arbitrary code with the rights of the CUPS spooler, which is usually the "lp" user.

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-r5"

All CUPS users should also upgrade to the latest version:

Code Listing 3.2: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-print/cups-1.1.20-r5"

4. References

Page updated October 21, 2004

Summary: This is a Gentoo Linux Security Advisory

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