Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 30.0, Firefox ESR 24.x before 24.6, and Thunderbird before 24.6 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

Use-after-free vulnerability in the RefreshDriverTimer::TickDriver function in the SMIL Animation Controller in Mozilla Firefox before 30.0, Firefox ESR 24.x before 24.6, and Thunderbird before 24.6 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via crafted web content.

Security researcher Abhishek Arya (Inferno) of the Google Chrome Security Team discovered a number of use-after-free and out of bounds read issues using the Address Sanitizer tool. These issues are potentially exploitable, allowing for remote code execution.

In general these flaws cannot be exploited through email in the Thunderbird product because scripting is disabled, but is potentially a risk in browser or browser-like contexts.

External Reference:

http://www.mozilla.org/security/announce/2014/mfsa2014-49.html

Acknowledgements:

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Abhishek Arya as the original reporter.