plugins/demux/libmkv_plugin.dll in VideoLAN VLC Media Player 2.0.7, and possibly other versions, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted MKV file, possibly involving an integer overflow and out-of-bounds read or heap-based buffer overflow, or an uncaught exception. NOTE: the vendor disputes the severity and claimed vulnerability type of this issue, stating "This PoC crashes VLC, indeed, but does nothing more... this is not an integer overflow error, but an uncaught exception and I doubt that it is exploitable. This uncaught exception makes VLC abort, not execute random code, on my Linux 64bits machine." A PoC posted by the original researcher shows signs of an attacker-controlled out-of-bounds read, but the affected instruction does not involve a register that directly influences control flow
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.
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
| Link | Tags |
|---|---|
| http://www.jbkempf.com/blog/post/2013/More-lies-from-Secunia | |
| http://www.securityfocus.com/bid/61032 | vdb entry |
| http://seclists.org/fulldisclosure/2013/Jul/71 | mailing list exploit |
| http://secunia.com/advisories/52956 | third party advisory vendor advisory |
| http://seclists.org/fulldisclosure/2013/Jul/77 | mailing list |
| http://seclists.org/fulldisclosure/2013/Jul/79 | mailing list |
| http://secunia.com/blog/372/ | vendor advisory |