Mozilla Firefox before 2.0.0.12 and Thunderbird before 2.0.0.12 does not properly manage a delay timer used in confirmation dialogs, which might allow remote attackers to trick users into confirming an unsafe action, such as remote file execution, by using a timer to change the window focus, aka the "dialog refocus bug" or "ffclick2".

The browser engine in Mozilla Firefox before 2.0.0.12, Thunderbird before 2.0.0.12, and SeaMonkey before 1.1.8 allows remote attackers to cause a denial of service (crash) and possibly trigger memory corruption via vectors related to the (1) nsTableFrame::GetFrameAtOrBefore, (2) nsAccessibilityService::GetAccessible, (3) nsBindingManager::GetNestedInsertionPoint, (4) nsXBLPrototypeBinding::AttributeChanged, (5) nsColumnSetFrame::GetContentInsertionFrame, and (6) nsLineLayout::TrimTrailingWhiteSpaceIn methods, and other vectors.

The JavaScript engine in Mozilla Firefox before 2.0.0.12, Thunderbird before 2.0.0.12, and SeaMonkey before 1.1.8 allows remote attackers to cause a denial of service (crash) and possibly trigger memory corruption via (1) a large switch statement, (2) certain uses of watch and eval, (3) certain uses of the mousedown event listener, and other vectors.

Mozilla Firefox before 2.0.0.12, Thunderbird before 2.0.0.12, and SeaMonkey before 1.1.8 allows remote attackers to execute script outside of the sandbox and conduct cross-site scripting (XSS) attacks via multiple vectors including the XMLDocument.load function, aka "JavaScript privilege escalation bugs."

Directory traversal vulnerability in Mozilla Firefox before 2.0.0.12, Thunderbird before 2.0.0.12, and SeaMonkey before 1.1.8, when using "flat" addons, allows remote attackers to read arbitrary Javascript, image, and stylesheet files via the chrome: URI scheme, as demonstrated by stealing session information from sessionstore.js.

Multiple vulnerabilities in Mozilla Firefox before 2.0.0.8, Thunderbird before 2.0.0.8, and SeaMonkey before 1.1.5 allow remote attackers to cause a denial of service (crash) via crafted HTML that triggers memory corruption or assert errors.

Multiple vulnerabilities in the Javascript engine in Mozilla Firefox before 2.0.0.8, Thunderbird before 2.0.0.8, and SeaMonkey before 1.1.5 allow remote attackers to cause a denial of service (crash) via crafted HTML that triggers memory corruption.

Mozilla Firefox before 2.0.0.8, Thunderbird before 2.0.0.8, and SeaMonkey before 1.1.5 allows remote attackers to execute arbitrary commands via a (1) mailto, (2) nntp, (3) news, or (4) snews URI with invalid "%" encoding, related to improper file type handling on Windows XP with Internet Explorer 7 installed, a variant of CVE-2007-3845.