XEmacs: User-assisted execution of arbitrary code — GLSA 201006-15

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

Affected Packages

app-editors/xemacs on all architectures
Affected versions < 21.4.22-r1
Unaffected versions >= 21.4.22-r1

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.

Workaround

There is no known workaround at this time.

Resolution

All XEmacs users should upgrade to the latest version:

 # 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.

References

Release Date
June 03, 2010

Latest Revision
June 03, 2010: 01

Severity
normal

Exploitable
remote

Bugzilla entries