Mozilla Firefox, Thunderbird, SeaMonkey vulnerabilities

A use-after-free vulnerability in the nsGenericHTMLElement::GetWidthHeightForImage function in Mozilla Firefox, Thunderbird, and SeaMonkey before specified versions allows remote attackers to execute arbitrary code or cause a denial of service through improper handling of an imgLoader object during an image-resize operation.

The nsTreeContentView function in Mozilla Firefox before 3.5.12 and 3.6.x before 3.6.9, Thunderbird before 3.0.7 and 3.1.x before 3.1.3, and SeaMonkey before 2.0.7 does not properly handle node removal in XUL trees, allowing remote attackers to execute arbitrary code via vectors involving access to deleted memory, related to a 'dangling pointer vulnerability.'

The navigator.plugins implementation in Mozilla Firefox before 3.5.12 and 3.6.x before 3.6.9, Thunderbird before 3.0.7 and 3.1.x before 3.1.3, and SeaMonkey before 2.0.7 does not properly handle destruction of the DOM plugin array, which might allow remote attackers to cause a denial of service (application crash) or execute arbitrary code via crafted access to the navigator object.

The nsXBLProtoImpl::InstallImplementation function in Mozilla Firefox before 29.0, Firefox ESR 24.x before 24.5, Thunderbird before 24.5, and SeaMonkey before 2.26 does not properly check whether objects are XBL objects. This allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow) via crafted JavaScript code.