The pdf14_open function in base/gdevp14.c in Artifex Software, Inc. Ghostscript 9.20 allows remote attackers to cause a denial of service (use-after-free and application crash) via a crafted file that is mishandled in the color management module.
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
| Link | Tags |
|---|---|
| http://git.ghostscript.com/?p=ghostpdl.git%3Ba=commit%3Bh=90fd0c7ca3efc1ddff64a86f4104b13b3ac969eb | |
| https://bugs.ghostscript.com/show_bug.cgi?id=697456 | patch issue tracking exploit |