critical
10
CWE
119
Advisory Published
Updated

CVE-2011-2991: Buffer Overflow

First published: Thu Aug 18 2011(Updated: )

The browser engine in Mozilla Firefox 4.x through 5, SeaMonkey 2.x before 2.3, Thunderbird before 6, and possibly other products does not properly implement JavaScript, which allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Mozilla Firefox=4.0-beta6
Mozilla Firefox=4.0-beta1
Mozilla Firefox=4.0-beta9
Mozilla Firefox=4.0-beta5
Mozilla Firefox=4.0-beta8
Mozilla Firefox=4.0-beta12
Mozilla Firefox=4.0-beta3
Mozilla Firefox=5.0
Mozilla Firefox=4.0-beta2
Mozilla Firefox=4.0-beta4
Mozilla Firefox=4.0-beta10
Mozilla Firefox=4.0
Mozilla Firefox=4.0-beta11
Mozilla Firefox=4.0-beta7
Mozilla Firefox=4.0.1
Mozilla Thunderbird=3.0.8
Mozilla Thunderbird=3.0.5
Mozilla Thunderbird=1.5.0.7
Mozilla Thunderbird=0.6
Mozilla Thunderbird=0.7.2
Mozilla Thunderbird=2.0.0.4
Mozilla Thunderbird=3.0.9
Mozilla Thunderbird=2.0.0.6
Mozilla Thunderbird=0.3
Mozilla Thunderbird=2.0.0.21
Mozilla Thunderbird=3.0.1
Mozilla Thunderbird=3.1.7
Mozilla Thunderbird=0.2
Mozilla Thunderbird=3.1.2
Mozilla Thunderbird=3.1.1
Mozilla Thunderbird=1.0.7
Mozilla Thunderbird=2.0.0.18
Mozilla Thunderbird=2.0.0.9
Mozilla Thunderbird=2.0.0.16
Mozilla Thunderbird=2.0.0.8
Mozilla Thunderbird=2.0.0.7
Mozilla Thunderbird=1.7.1
Mozilla Thunderbird=1.5.0.3
Mozilla Thunderbird=1.5.0.10
Mozilla Thunderbird=1.5.0.5
Mozilla Thunderbird=3.1.4
Mozilla Thunderbird=1.5.0.6
Mozilla Thunderbird=1.0
Mozilla Thunderbird=3.0.7
Mozilla Thunderbird=2.0.0.3
Mozilla Thunderbird=3.0.6
Mozilla Thunderbird=1.0.1
Mozilla Thunderbird=1.5-beta2
Mozilla Thunderbird=2.0.0.2
Mozilla Thunderbird=3.0.10
Mozilla Thunderbird=3.0.3
Mozilla Thunderbird=1.0.2
Mozilla Thunderbird=2.0.0.0
Mozilla Thunderbird=1.5.0.13
Mozilla Thunderbird=3.1.5
Mozilla Thunderbird=3.0.11
Mozilla Thunderbird=2.0.0.12
Mozilla Thunderbird=2.0.0.22
Mozilla Thunderbird=1.5
Mozilla Thunderbird=1.5.0.2
Mozilla Thunderbird=1.5.0.8
Mozilla Thunderbird=2.0.0.14
Mozilla Thunderbird=3.0.4
Mozilla Thunderbird<=5.0
Mozilla Thunderbird=0.5
Mozilla Thunderbird=1.0.4
Mozilla Thunderbird=1.5.2
Mozilla Thunderbird=2.0.0.17
Mozilla Thunderbird=2.0.0.23
Mozilla Thunderbird=1.5.0.9
Mozilla Thunderbird=1.5.0.11
Mozilla Thunderbird=0.9
Mozilla Thunderbird=1.0.3
Mozilla Thunderbird=2.0
Mozilla Thunderbird=3.0
Mozilla Thunderbird=1.5.0.12
Mozilla Thunderbird=0.7.3
Mozilla Thunderbird=0.4
Mozilla Thunderbird=1.5.1
Mozilla Thunderbird=0.7
Mozilla Thunderbird=1.5.0.14
Mozilla Thunderbird=3.1
Mozilla Thunderbird=1.0.6
Mozilla Thunderbird=3.1.3
Mozilla Thunderbird=2.0.0.5
Mozilla Thunderbird=3.1.6
Mozilla Thunderbird=1.7.3
Mozilla Thunderbird=2.0.0.1
Mozilla Thunderbird=1.5.0.1
Mozilla Thunderbird=1.0.8
Mozilla Thunderbird=0.1
Mozilla Thunderbird=0.7.1
Mozilla Thunderbird=1.0.5
Mozilla Thunderbird=0.8
Mozilla Thunderbird=3.0.2
Mozilla Thunderbird=2.0.0.19
Mozilla Thunderbird=1.5.0.4
Mozilla SeaMonkey=2.0.10
Mozilla SeaMonkey=2.2-beta2
Mozilla SeaMonkey=2.0.13
Mozilla SeaMonkey=2.0.4
Mozilla SeaMonkey=2.1-alpha2
Mozilla SeaMonkey=2.0.3
Mozilla SeaMonkey=2.0.2
Mozilla SeaMonkey=2.0-alpha_2
Mozilla SeaMonkey=2.0.8
Mozilla SeaMonkey=2.0-rc2
Mozilla SeaMonkey=2.0-alpha_3
Mozilla SeaMonkey=2.0.12
Mozilla SeaMonkey=2.0.11
Mozilla SeaMonkey=2.0-beta_2
Mozilla SeaMonkey=2.1-rc1
Mozilla SeaMonkey=2.1
Mozilla SeaMonkey=2.0-alpha_1
Mozilla SeaMonkey=2.0.9
Mozilla SeaMonkey=2.1-alpha1
Mozilla SeaMonkey=2.1-beta2
Mozilla SeaMonkey=2.0.1
Mozilla SeaMonkey=2.0.14
Mozilla SeaMonkey=2.0.7
Mozilla SeaMonkey=2.2
Mozilla SeaMonkey=2.0-beta_1
Mozilla SeaMonkey=2.1-rc2
Mozilla SeaMonkey=2.1-beta1
Mozilla SeaMonkey=2.0.5
Mozilla SeaMonkey=2.1-beta3
Mozilla SeaMonkey=2.0-rc1
Mozilla SeaMonkey=2.2-beta3
Mozilla SeaMonkey=2.0.6
Mozilla SeaMonkey=2.1-alpha3
Mozilla SeaMonkey=2.0
Mozilla SeaMonkey=2.2-beta1

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2011-2991?

    CVE-2011-2991 has been assigned a medium severity level as it can lead to denial of service through memory corruption.

  • How do I fix CVE-2011-2991?

    To fix CVE-2011-2991, update your affected software to the latest version released by Mozilla.

  • Which software products are affected by CVE-2011-2991?

    CVE-2011-2991 affects Mozilla Firefox 4.x through 5, SeaMonkey 2.x versions before 2.3, and Thunderbird before version 6.

  • What kind of attack can CVE-2011-2991 enable?

    CVE-2011-2991 can enable attackers to cause memory corruption and potential application crashes.

  • Is user action required to mitigate CVE-2011-2991?

    Yes, users must update their browsers and email clients to versions that contain the security fix for CVE-2011-2991.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203