critical
9.3
CWE
416
Advisory Published
Updated

CVE-2012-5840: Use After Free

First published: Wed Nov 21 2012(Updated: )

Use-after-free vulnerability in the nsTextEditorState::PrepareEditor function in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors, a different vulnerability than CVE-2012-4214.

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

Affected SoftwareAffected VersionHow to fix
Firefox<10.0.11
Firefox<17.0
Mozilla SeaMonkey<2.14
Thunderbird<17.0
Mozilla Thunderbird<10.0.11
SUSE Linux=11.4
SUSE Linux=12.1
SUSE Linux=12.2
SUSE Linux Enterprise Desktop=10-sp4
SUSE Linux Enterprise Desktop=11-sp2
SUSE Linux Enterprise Server=10-sp4
SUSE Linux Enterprise Server=11-sp2
SUSE Linux Enterprise Server=11-sp2
SUSE Linux Enterprise Software Development Kit=10-sp4
SUSE Linux Enterprise Software Development Kit=11-sp2
Ubuntu=10.04
Ubuntu=11.10
Ubuntu=12.04
Ubuntu=12.10
Red Hat Enterprise Linux Desktop=5.0
Red Hat Enterprise Linux Desktop=6.0
Red Hat Enterprise Linux Server EUS=6.3
Red Hat Enterprise Linux Server=5.0
Red Hat Enterprise Linux Server=6.0
Red Hat Enterprise Linux Workstation=5.0
Red Hat Enterprise Linux Workstation=6.0
Firefox ESR<10.0.11

Remedy

https://bugzilla.mozilla.org/show_bug.cgi?id=805287

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2012-5840?

    CVE-2012-5840 is classified as a critical vulnerability due to its potential for arbitrary code execution.

  • How do I fix CVE-2012-5840?

    To fix CVE-2012-5840, you should upgrade to the latest version of Mozilla Firefox, Thunderbird, or SeaMonkey that addresses this vulnerability.

  • Which software is affected by CVE-2012-5840?

    CVE-2012-5840 affects Mozilla Firefox versions prior to 17.0, Thunderbird versions before 17.0, and SeaMonkey versions before 2.14.

  • Can CVE-2012-5840 lead to data loss?

    Yes, CVE-2012-5840 can lead to data loss as it allows remote attackers to execute arbitrary code.

  • Are there any workarounds for CVE-2012-5840?

    There are no known workarounds for CVE-2012-5840 besides applying the relevant software updates.

Company

Resources

Contact

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