An integer overflow vulnerability was observed in the regemit function in regexp.c in Artifex Software, Inc. MuJS before fa3d30fd18c348bb4b1f3858fb860f4fcd4b2045. The attack requires a regular expression with nested repetition. A successful exploitation of this issue can lead to code execution or a denial of service (buffer overflow) condition.
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
| Link | Tags |
|---|---|
| http://www.securityfocus.com/bid/95876 | vdb entry third party advisory |
| https://bugs.ghostscript.com/show_bug.cgi?id=697448 | issue tracking |
| http://git.ghostscript.com/?p=mujs.git%3Bh=fa3d30fd18c348bb4b1f3858fb860f4fcd4b2045 |