Ubuntu Security Notice USN-5954-2

Ubuntu Security Notice 5954-2 - USN-5954-1 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. Lukas Bernhard discovered that Firefox did not properly manage memory when invalidating JIT code while following an iterator. An attacker could potentially exploits this issue to cause a denial of service. Rob Wu discovered that Firefox did not properly manage the URLs when following a redirect to a publicly accessible web extension file. An attacker could potentially exploits this to obtain sensitive information. Luan Herrera discovered that Firefox did not properly manage cross-origin iframe when dragging a URL. An attacker could potentially exploit this issue to perform spoofing attacks. Khiem Tran discovered that Firefox did not properly manage one-time permissions granted to a document loaded using a file: URL. An attacker could potentially exploit this issue to use granted one-time permissions on the local files came from different sources.