FontForge: User-assisted execution of arbitrary code

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 201201-08 / FontForge
Release Date	January 23, 2012
Latest Revision	January 23, 2012: 1
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
media-gfx/fontforge	< 20110222-r1	>= 20110222-r1	All supported architectures

Related bugreports: #386293

Synopsis

A stack-based buffer overflow flaw in FontForge could result in execution of arbitrary code or a Denial of Service.

2. Impact Information

Background

FontForge is a PostScript font editor and converter.

Description

FontForge is vulnerable to an error when processing the "CHARSET_REGISTRY" header in font files, which could cause a stack-based buffer overflow.

Impact

A remote attacker could entice a user to open a specially crafted BDF file using FontForge font editor, possibly resulting in the remote execution of arbitrary code with the privileges of the FontForge process, or a Denial of Service (application crash).

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All FontForge users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=media-gfx/fontforge-20110222-r1"

NOTE: This is a legacy GLSA. Updates for all affected architectures are available since October 12, 2011. It is likely that your system is already no longer affected by this issue.

4. References

CVE-2010-4259

Page updated January 23, 2012

Summary: This is a Gentoo Linux Security Advisory

Security Team
Contact Address

Donate to support our development efforts.