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FontForge: User-assisted execution of arbitrary code

Content:

1.  Gentoo Linux Security Advisory

Version Information

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



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Page updated January 23, 2012

Summary: This is a Gentoo Linux Security Advisory

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