The needSamples method in AudioOutputSpeech.cpp in the client in Mumble 1.2.4 and the 1.2.3 pre-release snapshots, Mumble for iOS 1.1 through 1.2.2, and MumbleKit before commit fd190328a9b24d37382b269a5674b0c0c7a7e36d does not check the return value of the opus_decode_float function, which allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted Opus voice packet, which triggers an error in opus_decode_float, a conversion of a negative integer to an unsigned integer, and a heap-based buffer over-read and over-write.

This update fixes two security issues with mumble :

  - bnc#862527: updated to version 1.2.5 to address two     Denial of Service security issues (CVE-2014-0044,     CVE-2014-0045).

The remote host is affected by the vulnerability described in GLSA-201406-06 (Mumble: Multiple vulnerabilities)

    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.

Mumble reports :

A malformed Opus voice packet sent to a Mumble client could trigger a NULL pointer dereference or an out-of-bounds array access.

A malformed Opus voice packet sent to a Mumble client could trigger a heap-based buffer overflow.

New upstream release 1.2.5.

This update fixes :

  - CVE-2014-0044

    - CVE-2014-0045

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Several issues have been discovered in mumble, a low latency VoIP client. The Common Vulnerabilities and Exposures project identifies the following issues :

  - CVE-2014-0044     It was discovered that a malformed Opus voice packet     sent to a Mumble client could trigger a NULL pointer     dereference or an out-of-bounds array access. A     malicious remote attacker could exploit this flaw to     mount a denial of service attack against a mumble client     by causing the application to crash.

  - CVE-2014-0045     It was discovered that a malformed Opus voice packet     sent to a Mumble client could trigger a heap-based     buffer overflow. A malicious remote attacker could use     this flaw to cause a client crash (denial of service) or     potentially use it to execute arbitrary code.

The oldstable distribution (squeeze) is not affected by these problems.

ID	Name	Product	Family	Severity
75264	openSUSE Security Update : mumble (openSUSE-SU-2014:0271-1)	Nessus	SuSE Local Security Checks	high
74371	GLSA-201406-06 : Mumble: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high
74240	FreeBSD : mumble -- NULL pointer dereference and heap-based buffer overflow (c2c8c84b-e734-11e3-9a25-5404a6a6412c)	Nessus	FreeBSD Local Security Checks	high
73928	Fedora 20 : mumble-1.2.5-1.fc20 (2014-5767)	Nessus	Fedora Local Security Checks	high
73927	Fedora 19 : mumble-1.2.5-1.fc19 (2014-5751)	Nessus	Fedora Local Security Checks	high
72354	Debian DSA-2854-1 : mumble - several vulnerabilities	Nessus	Debian Local Security Checks	high

Detections

Analytics

CVE-2014-0045

critical

Tenable Plugins

high

high

high

high

high

high