Swftools out-of-bounds write vulnerability (CNVD-2022-62218)

Swftools is a set of utilities for working with Adobe Flash files (SWF files.) An out-of-bounds write vulnerability exists in Swftools 2020-12-22 and earlier versions, which stems from a function swf_GetBits( ) in rfxswf.c. A heap buffer overflow exists. An attacker could exploit this vulnerability to enable code execution.