critical
9.3
CWE
399 416
Advisory Published
Updated

CVE-2012-1940: Use After Free

First published: Tue Jun 05 2012(Updated: )

Use-after-free vulnerability in the nsFrameList::FirstChild function in Mozilla Firefox 4.x through 12.0, Firefox ESR 10.x before 10.0.5, Thunderbird 5.0 through 12.0, Thunderbird ESR 10.x before 10.0.5, and SeaMonkey before 2.10 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption and application crash) by changing the size of a container of absolutely positioned elements in a column.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Firefox=4.0
Firefox=4.0-beta1
Firefox=4.0-beta10
Firefox=4.0-beta11
Firefox=4.0-beta12
Firefox=4.0-beta2
Firefox=4.0-beta3
Firefox=4.0-beta4
Firefox=4.0-beta5
Firefox=4.0-beta6
Firefox=4.0-beta7
Firefox=4.0-beta8
Firefox=4.0-beta9
Firefox=4.0.1
Firefox=5.0
Firefox=5.0.1
Firefox=6.0
Firefox=6.0.1
Firefox=6.0.2
Firefox=7.0
Firefox=7.0.1
Firefox=8.0
Firefox=8.0.1
Firefox=9.0
Firefox=9.0.1
Firefox=10.0
Firefox=10.0.1
Firefox=10.0.2
Firefox=10.0.3
Firefox=10.0.4
Firefox=11.0
Firefox=12.0
Firefox=12.0-beta6
Mozilla SeaMonkey<=2.9
Mozilla SeaMonkey=1.0
Mozilla SeaMonkey=1.0-alpha
Mozilla SeaMonkey=1.0-beta
Mozilla SeaMonkey=1.0.1
Mozilla SeaMonkey=1.0.2
Mozilla SeaMonkey=1.0.3
Mozilla SeaMonkey=1.0.4
Mozilla SeaMonkey=1.0.5
Mozilla SeaMonkey=1.0.6
Mozilla SeaMonkey=1.0.7
Mozilla SeaMonkey=1.0.8
Mozilla SeaMonkey=1.0.9
Mozilla SeaMonkey=1.1
Mozilla SeaMonkey=1.1-alpha
Mozilla SeaMonkey=1.1-beta
Mozilla SeaMonkey=1.1.1
Mozilla SeaMonkey=1.1.2
Mozilla SeaMonkey=1.1.3
Mozilla SeaMonkey=1.1.4
Mozilla SeaMonkey=1.1.5
Mozilla SeaMonkey=1.1.6
Mozilla SeaMonkey=1.1.7
Mozilla SeaMonkey=1.1.8
Mozilla SeaMonkey=1.1.9
Mozilla SeaMonkey=1.1.10
Mozilla SeaMonkey=1.1.11
Mozilla SeaMonkey=1.1.12
Mozilla SeaMonkey=1.1.13
Mozilla SeaMonkey=1.1.14
Mozilla SeaMonkey=1.1.15
Mozilla SeaMonkey=1.1.16
Mozilla SeaMonkey=1.1.17
Mozilla SeaMonkey=1.1.18
Mozilla SeaMonkey=1.1.19
Mozilla SeaMonkey=1.5.0.8
Mozilla SeaMonkey=1.5.0.9
Mozilla SeaMonkey=1.5.0.10
Mozilla SeaMonkey=2.0
Mozilla SeaMonkey=2.0-alpha_1
Mozilla SeaMonkey=2.0-alpha_2
Mozilla SeaMonkey=2.0-alpha_3
Mozilla SeaMonkey=2.0-beta_1
Mozilla SeaMonkey=2.0-beta_2
Mozilla SeaMonkey=2.0-rc1
Mozilla SeaMonkey=2.0-rc2
Mozilla SeaMonkey=2.0.1
Mozilla SeaMonkey=2.0.2
Mozilla SeaMonkey=2.0.3
Mozilla SeaMonkey=2.0.4
Mozilla SeaMonkey=2.0.5
Mozilla SeaMonkey=2.0.6
Mozilla SeaMonkey=2.0.7
Mozilla SeaMonkey=2.0.8
Mozilla SeaMonkey=2.0.9
Mozilla SeaMonkey=2.0.10
Mozilla SeaMonkey=2.0.11
Mozilla SeaMonkey=2.0.12
Mozilla SeaMonkey=2.0.13
Mozilla SeaMonkey=2.0.14
Mozilla SeaMonkey=2.1
Mozilla SeaMonkey=2.1-alpha1
Mozilla SeaMonkey=2.1-alpha2
Mozilla SeaMonkey=2.1-alpha3
Mozilla SeaMonkey=2.1-beta1
Mozilla SeaMonkey=2.1-beta2
Mozilla SeaMonkey=2.1-beta3
Mozilla SeaMonkey=2.1-rc1
Mozilla SeaMonkey=2.1-rc2
Mozilla SeaMonkey=2.2
Mozilla SeaMonkey=2.2-beta1
Mozilla SeaMonkey=2.2-beta2
Mozilla SeaMonkey=2.2-beta3
Mozilla SeaMonkey=2.3
Mozilla SeaMonkey=2.3-beta1
Mozilla SeaMonkey=2.3-beta2
Mozilla SeaMonkey=2.3-beta3
Mozilla SeaMonkey=2.3.1
Mozilla SeaMonkey=2.3.2
Mozilla SeaMonkey=2.3.3
Mozilla SeaMonkey=2.4
Mozilla SeaMonkey=2.4-beta1
Mozilla SeaMonkey=2.4-beta2
Mozilla SeaMonkey=2.4-beta3
Mozilla SeaMonkey=2.4.1
Mozilla SeaMonkey=2.5
Mozilla SeaMonkey=2.5-beta1
Mozilla SeaMonkey=2.5-beta2
Mozilla SeaMonkey=2.5-beta3
Mozilla SeaMonkey=2.5-beta4
Mozilla SeaMonkey=2.6
Mozilla SeaMonkey=2.6-beta1
Mozilla SeaMonkey=2.6-beta2
Mozilla SeaMonkey=2.6-beta3
Mozilla SeaMonkey=2.6-beta4
Mozilla SeaMonkey=2.6.1
Mozilla SeaMonkey=2.7
Mozilla SeaMonkey=2.7-beta1
Mozilla SeaMonkey=2.7-beta2
Mozilla SeaMonkey=2.7-beta3
Mozilla SeaMonkey=2.7-beta4
Mozilla SeaMonkey=2.7-beta5
Mozilla SeaMonkey=2.7.1
Mozilla SeaMonkey=2.7.2
Mozilla SeaMonkey=2.8
Mozilla SeaMonkey=2.8-beta1
Mozilla SeaMonkey=2.8-beta2
Mozilla SeaMonkey=2.8-beta3
Mozilla SeaMonkey=2.8-beta4
Mozilla SeaMonkey=2.8-beta5
Mozilla SeaMonkey=2.8-beta6
Mozilla SeaMonkey=2.9-beta1
Mozilla SeaMonkey=2.9-beta2
Mozilla SeaMonkey=2.9-beta3
Thunderbird=5.0
Thunderbird=6.0
Thunderbird=6.0.1
Thunderbird=6.0.2
Thunderbird=7.0
Thunderbird=7.0.1
Thunderbird=8.0
Thunderbird=9.0
Thunderbird=9.0.1
Thunderbird=10.0
Thunderbird=10.0.1
Thunderbird=10.0.2
Thunderbird=10.0.3
Thunderbird=10.0.4
Thunderbird=11.0
Thunderbird=12.0
Mozilla Thunderbird=10.0
Mozilla Thunderbird=10.0.1
Mozilla Thunderbird=10.0.2
Mozilla Thunderbird=10.0.3
Mozilla Thunderbird=10.0.4
Firefox ESR=10.0
Firefox ESR=10.0.1
Firefox ESR=10.0.2
Firefox ESR=10.0.3
Firefox ESR=10.0.4

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2012-1940?

    CVE-2012-1940 has a high severity rating due to its potential for remote code execution.

  • How do I fix CVE-2012-1940?

    To mitigate CVE-2012-1940, upgrade to a version of Mozilla Firefox, Thunderbird, or SeaMonkey that is patched and newer than the vulnerable versions listed.

  • Which versions are affected by CVE-2012-1940?

    CVE-2012-1940 affects Mozilla Firefox versions 4.x through 12.0, Thunderbird 5.0 through 12.0, and SeaMonkey versions before 2.10.

  • What kind of vulnerability is CVE-2012-1940?

    CVE-2012-1940 is a use-after-free vulnerability that allows remote attackers to execute arbitrary code.

  • What are the potential impacts of exploiting CVE-2012-1940?

    Exploitation of CVE-2012-1940 can lead to arbitrary code execution or denial of service on affected systems.

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