The opus_packet_get_samples_per_frame function in client in Mumble 1.2.4 and the 1.2.3 pre-release snapshots allows remote attackers to cause a denial of service (crash) via a crafted length prefix value, which triggers a NULL pointer dereference or a heap-based buffer over-read (aka "out-of-bounds array access").
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.debian.org/security/2014/dsa-2854 | vendor advisory |
| http://lists.opensuse.org/opensuse-updates/2014-02/msg00063.html | vendor advisory |
| http://osvdb.org/102904 | vdb entry |
| http://mumble.info/security/Mumble-SA-2014-001.txt | vendor advisory |