Ubuntu Security Notice USN-6992-2

Ubuntu Security Notice 6992-2 - USN-6992-1 fixed vulnerabilities in Firefox. The update introduced several minor regressions. This update fixes the problem. Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information across domains, or execute arbitrary code. Nils Bars discovered that Firefox contained a type confusion vulnerability when performing certain property name lookups. An attacker could potentially exploit this issue to cause a denial of service, or execute arbitrary code. It was discovered that Firefox did not properly manage memory during garbage collection. An attacker could potentially exploit this issue to cause a denial of service, or execute arbitrary code. Seunghyun Lee discovered that Firefox contained a type confusion vulnerability when handling certain ArrayTypes. An attacker could potentially exploit this issue to cause a denial of service, or execute arbitrary code.