medium
4.3
CWE
369 189
Advisory Published
CVE Published
Updated

CVE-2012-1143: Divide by Zero

First published: Tue Mar 06 2012(Updated: )

An integer divide by zero was found in the way FreeType font rendering engine performed arithmetic computations for certain fonts. A remote attacker could provide a specially-crafted font file, which once opened in an application linked against FreeType would lead to that application crash. Upstream bug report: [1] <a href="https://savannah.nongnu.org/bugs/?35660">https://savannah.nongnu.org/bugs/?35660</a> Upstream patch: [2] <a href="http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=ba67957d5ead443f4b6b31805d6e780d54361ca4">http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=ba67957d5ead443f4b6b31805d6e780d54361ca4</a> Acknowledgements: Red Hat would like to thank Mateusz Jurczyk of the Google Security Team for reporting this issue.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
FreeType<=2.4.8
FreeType=1.3.1
FreeType=2.0.0
FreeType=2.0.1
FreeType=2.0.2
FreeType=2.0.3
FreeType=2.0.4
FreeType=2.0.5
FreeType=2.0.6
FreeType=2.0.7
FreeType=2.0.8
FreeType=2.0.9
FreeType=2.1
FreeType=2.1.3
FreeType=2.1.4
FreeType=2.1.5
FreeType=2.1.6
FreeType=2.1.7
FreeType=2.1.8
FreeType=2.1.8-rc1
FreeType=2.1.9
FreeType=2.1.10
FreeType=2.2.0
FreeType=2.2.1
FreeType=2.3.0
FreeType=2.3.1
FreeType=2.3.2
FreeType=2.3.3
FreeType=2.3.4
FreeType=2.3.5
FreeType=2.3.6
FreeType=2.3.7
FreeType=2.3.8
FreeType=2.3.9
FreeType=2.3.10
FreeType=2.3.11
FreeType=2.3.12
FreeType=2.4.0
FreeType=2.4.1
FreeType=2.4.2
FreeType=2.4.3
FreeType=2.4.4
FreeType=2.4.5
FreeType=2.4.6
FreeType=2.4.7
Mozilla Firefox<=10.0.3
Mozilla Firefox=1.0
Mozilla Firefox=4.0
Mozilla Firefox=4.0-beta1
Mozilla Firefox=4.0-beta2
Mozilla Firefox=4.0-beta3
Mozilla Firefox=4.0-beta4
Mozilla Firefox=5.0
Mozilla Firefox=6.0
Mozilla Firefox=6.0.1
Mozilla Firefox=6.0.2
Mozilla Firefox=7.0
Mozilla Firefox=8.0
Mozilla Firefox=9.0
Mozilla Firefox=10.0
Mozilla Firefox=10.0.1
Mozilla Firefox=10.0.2

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2012-1143?

    CVE-2012-1143 is classified as a moderate severity vulnerability due to the potential for application crashes when rendering specifically crafted font files.

  • How do I fix CVE-2012-1143?

    To fix CVE-2012-1143, update the FreeType library to version 2.4.9 or later, which addresses the integer divide by zero issue.

  • What applications are affected by CVE-2012-1143?

    Applications linked against affected versions of the FreeType library, such as various graphic and web browsers, can be impacted by CVE-2012-1143.

  • Can CVE-2012-1143 be exploited remotely?

    Yes, an attacker can exploit CVE-2012-1143 remotely by sending a specially crafted font file to the target application.

  • What does CVE-2012-1143 pertain to in FreeType?

    CVE-2012-1143 pertains to an integer divide by zero vulnerability in the FreeType font rendering engine caused by faulty arithmetic computations.

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