Artifex Ghostscript before 10.03.1 allows memory corruption, and SAFER sandbox bypass, via format string injection with a uniprint device.
Artifex Ghostscript anterior a 10.03.1 permite la corrupción de la memoria y una omisión MÁS SEGURA de la sandbox mediante la inyección de cadena de formato con un dispositivo uniprint.
A flaw in Ghostscript has been identified where the uniprint device allows users to pass various string fragments as device options. These strings, particularly upWriteComponentCommands and upYMoveCommand, are treated as format strings for gp_fprintf and gs_snprintf. This lack of restriction permits arbitrary format strings with multiple specifiers, potentially leading to data leakage from the stack and memory corruption. In RHEL 9 or newer, an attacker could exploit this vulnerability to temporarily disable Ghostscript’s SAFER mode, which prevents Postscript code from executing commands or opening arbitrary files during the current invocation.
