68704 : FreeType src/truetype/ttgxvar.c ft_var_readpackedpoints() Function TrueType GX Font Handling Overflow
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Timeline

Disclosure Date
2010-10-11

Description

FreeType is prone to an overflow condition. The 'ft_var_readpackedpoints()' function in 'truetype/ttgxvar.c' fails to properly sanitize user-supplied input resulting in a buffer overflow. With a specially crafted TrueType GX font, a context-dependent attacker can potentially execute arbitrary code.

Classification

Location: Local / Remote
Attack Type: Input Manipulation
Impact: Loss of Integrity
Solution: Patch / RCS
Exploit: Exploit Public
Disclosure: Vendor Verified

Solution

Upgrade to version 2.4.4 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

The FreeType Project

Freetype

2.4.3

References

Security Tracker: 1024745
CVE ID: 2010-3855 (see also: NVD)
Secunia Advisory ID: 41738 42289 42295 43138 43697 43814 44008 45224 47676 48951
Bugtraq ID: 44214
VUPEN Advisory: ADV-2010-3037
Vendor Specific News/Changelog Entry: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=602221
http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=59eb9f8cfe7d1df379a2318316d1f04f80fba54a
http://lists.debian.org/debian-security-announce/2011/msg00019.html
http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00020.html
http://security.gentoo.org/glsa/glsa-201201-09.xml
https://savannah.nongnu.org/bugs/?31310
https://savannah.nongnu.org/bugs/index.php?31310
Mail List Post: http://lists.fedoraproject.org/pipermail/package-announce/2010-November/050965.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051231.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051251.html
Vendor Specific Advisory URL: http://support.apple.com/kb/HT1222
http://support.apple.com/kb/HT4565
http://support.apple.com/kb/HT4581
http://support.apple.com/kb/HT4802
http://support.apple.com/kb/HT4803
https://hermes.opensuse.org/messages/7850332
Other Advisory URL: http://www.mandriva.com/security/advisories?name=MDVSA-2010:235
http://www.mandriva.com/security/advisories?name=MDVSA-2010:236
News Article: http://www.scmagazineus.com/apple-issues-slew-of-patches/article/198899/
RedHat RHSA: RHSA-2010:0889

Tools & Filters

	53313 53487

Credit

Not Available

CVSSv2 Score

CVSSv2 Base Score = 6.8
Source: nvd.nist.gov | Generated: 2010-11-29 | Disagree?

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