79876 : FreeType src/pcf/pcfread.c Properties Loading PCF Font Handling Overflow
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Timeline

Disclosure Date
2012-02-23

Description

FreeType contains an overflow condition in src/pcf/pcfread.c. The issue is triggered as user-supplied input is not properly validated when loading properties. With a specially crafted PFC font, a context-dependent attacker can cause a heap-based buffer overflow, resulting in a denial of service or potentially execution of arbitrary code.

Classification

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

Solution

The FreeType Project has released a patch in the GIT repository to address this vulnerability. This patch will be included in version 2.4.9. Check the vendor advisory or solution in the references section.

Products

The FreeType Project

Freetype

2.4.8

References

Security Tracker: 1026765
CVE ID: 2012-1130 (see also: NVD)
Secunia Advisory ID: 48268 48508 48758 48797 48805 48822 48918 48951 48973 49721 50586
Related OSVDB ID: 79872 79873 79874 79875 79877 79878 79880 79881 79882 79883 79884 79885 79886 79887 79888 79889 79890 79891
Vendor Specific Solution URL: http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=c776fc17bfeaa607405fc96620e9445e7a0965c3
Vendor Specific News/Changelog Entry: http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00002.html
http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00015.html
http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00018.html
http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00020.html
http://security.gentoo.org/glsa/glsa-201204-04.xml
http://slackware.com/security/viewer.php?l=slackware-security&y=2012&m=slackware-security.499108
http://www.mozilla.org/security/announce/2012/mfsa2012-21.html
http://www.ubuntu.com/usn/usn-1403-1
https://bugzilla.redhat.com/show_bug.cgi?id=800587
Vendor Specific Advisory URL: http://support.apple.com/kb/HT5503
https://savannah.nongnu.org/bugs/?35603
Vendor URL: http://www.freetype.org/
Mail List Post: http://www.openwall.com/lists/oss-security/2012/03/06/16
RedHat RHSA: RHSA-2012:0467

Credit

Matthew 'j00ru' Jurczyk - Google Security Team

CVSSv2 Score

CVSSv2 Base Score = 9.3
Source: nvd.nist.gov | Generated: 2012-04-25 | Disagree?

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