Mozilla Foundation Security Advisory 2016-96

Security vulnerabilities fixed in Thunderbird 45.6

Announced December 28, 2016 Impact critical Products Thunderbird Fixed in Thunderbird 45.6

In general, these flaws cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but are potentially risks in browser or browser-like contexts.

# CVE-2016-9899: Use-after-free while manipulating DOM events and audio elements Reporter echo Impact critical Description Use-after-free while manipulating DOM events and removing audio elements due to errors in the handling of node adoption. References Bug 1317409

# CVE-2016-9895: CSP bypass using marquee tag Reporter Andrew Krasichkov Impact high Description Event handlers on marquee elements were executed despite a strict Content Security Policy (CSP) that disallowed inline JavaScript. References Bug 1312272

# CVE-2016-9897: Memory corruption in libGLES Reporter Aral Impact high Description Memory corruption resulting in a potentially exploitable crash during WebGL functions using a vector constructor with a varying array within libGLES. References Bug 1301381

# CVE-2016-9898: Use-after-free in Editor while manipulating DOM subtrees Reporter Nils Impact high Description Use-after-free resulting in potentially exploitable crash when manipulating DOM subtrees in the Editor. References Bug 1314442

# CVE-2016-9900: Restricted external resources can be loaded by SVG images through data URLs Reporter insertscript Impact high Description External resources that should be blocked when loaded by SVG images can bypass security restrictions through the use of data: URLs. This could allow for cross-domain data leakage. References Bug 1319122

# CVE-2016-9904: Cross-origin information leak in shared atoms Reporter Jann Horn Impact high Description An attacker could use a JavaScript Map/Set timing attack to determine whether an atom is used by another compartment/zone in specific contexts. This could be used to leak information, such as usernames embedded in JavaScript code, across websites. References Bug 1317936

# CVE-2016-9905: Crash in EnumerateSubDocuments Reporter Philipp Impact high Description A potentially exploitable crash in EnumerateSubDocuments while adding or removing sub-documents. References Bug 1293985