XEmacs: User-assisted execution of arbitrary code

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 201006-15 / xemacs
Release Date	June 03, 2010
Latest Revision	June 03, 2010: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
app-editors/xemacs	< 21.4.22-r1	>= 21.4.22-r1	All supported architectures

Related bugreports: #275397

Synopsis

Multiple integer overflow errors in XEmacs might allow remote, user-assisted attackers to execute arbitrary code.

2. Impact Information

Background

XEmacs is a highly extensible and customizable text editor.

Description

Tielei Wang reported multiple integer overflow vulnerabilities in the tiff_instantiate(), png_instantiate() and jpeg_instantiate() functions in glyphs-eimage.c, all possibly leading to heap-based buffer overflows.

Impact

A remote attacker could entice a user to open a specially crafted TIFF, JPEG or PNG file using XEmacs, possibly resulting in the remote execution of arbitrary code with the privileges of the user running the application, or a Denial of Service condition.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All XEmacs users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-editors/xemacs-21.4.22-r1"

NOTE: This is a legacy GLSA. Updates for all affected architectures are available since July 26, 2009. It is likely that your system is already no longer affected by this issue.

4. References

CVE-2009-2688

Page updated June 03, 2010

Summary: This is a Gentoo Linux Security Advisory

Security Team
Contact Address

Donate to support our development efforts.