Ubuntu Security Notice 2053-1 - Ben Turner, Bobby Holley, Jesse Ruderman and Christian Holler discovered multiple memory safety issues in Thunderbird. If a user were tricked in to opening a specially crafted message with scripting enabled, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Thunderbird. Tyson Smith and Jesse Schwartzentruber discovered a use-after-free in event listeners. If a user had enabled scripting, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Thunderbird. Various other issues were also addressed.
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Ubuntu Security Notice 2052-1 - Ben Turner, Bobby Holley, Jesse Ruderman, Christian Holler and Christoph Diehl discovered multiple memory safety issues in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Firefox. Myk Melez discovered that the doorhanger notification for web app installation could persist between page navigations. An attacker could potentially exploit this to conduct clickjacking attacks. Various other issues were also addressed.
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