Mumble: Multiple vulnerabilities

Background

Mumble is low-latency voice chat software intended for use with gaming.

Description

Multiple vulnerabilities have been discovered in Mumble:

• A crafted length prefix value can trigger a heap-based buffer overflow or NULL pointer dereference in the opus_packet_get_samples_per_frame function (CVE-2014-0044)
• A crafted packet can trigger an error in the opus_decode_float function, leading to a heap-based buffer overflow (CVE-2014-0045)
• A crafted SVG referencing local files can lead to resource exhaustion or hangs (CVE-2014-3755)
• Mumble does not properly escape HTML in some external strings before displaying them (CVE-2014-3756)

Impact

A remote attacker could possibly execute arbitrary code with the privileges of the process or cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All Mumble users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=media-sound/mumble-1.2.6"