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libFLAC 1.3.0 Stack Overflow / Heap Overflow / Code Execution

libFLAC 1.3.0 Stack Overflow / Heap Overflow / Code Execution
Posted Nov 25, 2014
Authored by Open Source CERT, Daniele Biano

The libFLAC project, an open source library implementing reference encoders and decoders for native FLAC and Ogg FLAC audio content, suffers from multiple implementation issues. In particular, a stack overflow and a heap overflow condition, which may result in arbitrary code execution, can be triggered by passing a maliciously crafted .flac file to the libFLAC decoder. Versions 1.3.0 and below are affected.

tags | advisory, overflow, arbitrary, code execution
advisories | CVE-2014-8962, CVE-2014-9028
MD5 | d6cee771a96d43f4b03022c735b7f36f

libFLAC 1.3.0 Stack Overflow / Heap Overflow / Code Execution

Change Mirror Download

Description:

FLAC is an open source lossless audio codec supported by several software
and music players.

The libFLAC project, an open source library implementing reference
encoders and decoders for native FLAC and Ogg FLAC audio content,
suffers from multiple implementation issues.

In particular, a stack overflow and a heap overflow condition, which may
result in arbitrary code execution, can be triggered by passing a maliciously
crafted .flac file to the libFLAC decoder.

Affected version:

libFLAC <= 1.3.0

The following packages were identified as affected as they statically
include libFLAC in their own packages.

Max <= 0.9.1
Cog <= 0.07
cinelerra <= 4.6
JUCE <= 3.1.0 (juce_audio_formats module)

Fixed version:

libFLAC >= 1.3.1

Max N/A
Cog N/A
cinelerra N/A
JUCE N/A

Credit: vulnerability report from Michele Spagnuolo of Google Security Team <mikispag AT google.com>

CVE:

CVE-2014-8962 (stack overflow)
CVE-2014-9028 (heap overflow)

Timeline:

2014-11-12: heap overflow report received
2014-11-12: contacted maintainer
2014-11-14: patch provided by maintainer
2014-11-17: reporter confirms patch
2014-11-20: stack overflow vulnerability reported
2014-11-21: assigned CVE (heap overflow)
2014-11-22: contacted affected vendors
2014-11-23: contacted additional affected vendors
2014-11-25: advisory release

References:

https://git.xiph.org/?p=flac.git;a=commit;h=5b3033a2b355068c11fe637e14ac742d273f076e
https://git.xiph.org/?p=flac.git;a=commit;h=fcf0ba06ae12ccd7c67cee3c8d948df15f946b85

Permalink:

http://www.ocert.org/advisories/ocert-2014-008.html

--
Daniele Bianco Open Source Computer Security Incident Response Team
<danbia@ocert.org> http://www.ocert.org

GPG Key 0x9544A497
GPG Key fingerprint = 88A7 43F4 F28F 1B9D 6F2D 4AC5 AE75 822E 9544 A497
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