Synopsis: Important: thunderbird security update Advisory ID: SLSA-2020:5618-1 Issue Date: 2020-12-17 CVE Numbers: CVE-2020-16042 CVE-2020-26971 CVE-2020-26973 CVE-2020-26974 CVE-2020-26978 CVE-2020-35111 CVE-2020-35113 -- This update upgrades Thunderbird to version 78.6.0. Security Fix(es): * chromium-browser: Uninitialized Use in V8 (CVE-2020-16042) * Mozilla: Heap buffer overflow in WebGL (CVE-2020-26971) * Mozilla: CSS Sanitizer performed incorrect sanitization (CVE-2020-26973) * Mozilla: Incorrect cast of StyleGenericFlexBasis resulted in a heap use- after-free (CVE-2020-26974) * Mozilla: Memory safety bugs fixed in Firefox 84 and Firefox ESR 78.6 (CVE-2020-35113) * Mozilla: Internal network hosts could have been probed by a malicious webpage (CVE-2020-26978) * Mozilla: The proxy.onRequest API did not catch view-source URLs (CVE-2020-35111) -- SL7 x86_64 thunderbird-78.6.0-1.el7_9.x86_64.rpm thunderbird-debuginfo-78.6.0-1.el7_9.x86_64.rpm - Scientific Linux Development Team