Mozilla: Heap-buffer-overflow in nsCaseTransformTextRunFactory::TransformString (MFSA 2016-85, MFSA 2016-86)

Heap-based buffer overflow in the nsCaseTransformTextRunFactory::TransformString function in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird 45.4 allows remote attackers to cause a denial of service boolean out-of-bounds write or possibly have unspecified other impact v...