The (1) GetDatabase and (2) _XimParseStringFile functions in X.org libX11 1.5.99.901 (1.6 RC1) and earlier do not restrict the recursion depth when processing directives to include files, which allows X servers to cause a denial of service (stack consumption) via a crafted file.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://www.ubuntu.com/usn/USN-1854-1 | vendor advisory |
| http://www.openwall.com/lists/oss-security/2013/05/23/3 | mailing list |
| http://www.x.org/wiki/Development/Security/Advisory-2013-05-23 | vendor advisory |
| http://www.debian.org/security/2013/dsa-2693 | vendor advisory |