FreeType: User-assisted execution of arbitrary code
1.
Gentoo Linux Security Advisory
Version Information
| Advisory Reference |
GLSA 200806-10 / freetype |
| Release Date |
June 23, 2008 |
| Latest Revision |
May 28, 2009: 03 |
| Impact |
normal |
| Exploitable |
remote |
| Package |
Vulnerable versions |
Unaffected versions |
Architecture(s) |
| media-libs/freetype |
<
2.3.6 |
>=
2.3.6,
revision >=
1.4_pre20080316-r1 |
All supported architectures
|
Related bugreports:
#225851
Synopsis
Font parsing vulnerabilities in FreeType might lead to user-assisted
execution of arbitrary code.
2.
Impact Information
Background
FreeType is a font rendering library for TrueType Font (TTF) and
Printer Font Binary (PFB).
Description
Regenrecht reported multiple vulnerabilities in FreeType via iDefense:
-
An integer overflow when parsing values in the Private dictionary table
in a PFB file, leading to a heap-based buffer overflow
(CVE-2008-1806).
-
An invalid free() call related to parsing an invalid "number of axes"
field in a PFB file (CVE-2008-1807).
-
Multiple off-by-one errors when parsing PBF and TTF files, leading to
heap-based buffer overflows (CVE-2008-1808).
Impact
A remote attacker could entice a user to open a specially crafted TTF
or PBF file, possibly resulting in the execution of arbitrary code with
the privileges of the user running an application linked against
FreeType (such as the X.org X server, running as root).
3.
Resolution Information
Workaround
There is no known workaround at this time.
Resolution
All FreeType users should upgrade to the latest version:
Code Listing 3.1: Resolution |
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/freetype-2.3.6"
|
4.
References
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