Multiple integer underflows in the icmLutallocate function in International Color Consortium (ICC) Format library (icclib), as used in Ghostscript 9.06 and Argyll Color Management System, allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted (1) PostScript or (2) PDF file with embedded images, which triggers a heap-based buffer overflow. NOTE: this issue is also described as an array index error.

A Use-after-free vulnerability was found in the way icclib, a library used for reading and writing of color profile files that conform to the International Color Consortium (ICC) Profile Format Specification, processed certain crafted ICC profile files. The ICC Profile Format is a cross-platform device profile format that can be used to translate color data created on one device into another device's native color space.

A remote attacker could provide a specially crafted file and trick a local user into opening it, which could lead to arbitrary code execution with the privileges of the user running an application linked against icclib.

Red Hat would like to thank Marc Schoenefeld for reporting this flaw.