CVE-2017-5465: Mozilla: Out-of-bounds read in ConvolvePixel (MFSA 2017-11, MFSA 2017-12)

Severity: Critical

CVSS Score: 9.1

An out-of-bounds read while processing SVG content in "ConvolvePixel". This results in a crash and also allows for otherwise inaccessible memory being copied into SVG graphic content, which could then displayed. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.