Valve: Malformed Skybox .TGA in Half-Life (GoldSRC) leads to Access Violation

A malformed .TGA when loaded as a Skybox on a map in a GoldSRC engine game Half-Life can lead to arbitrary code execution on a remote client. Reproduction Steps Load the attached map + resources on a local Half-Life listen server. The game will crash with an Access Violation as soon as the map wi...