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Date: Tue, 25 Nov 2014 10:12:18 +0100
From: Daniele Bianco <>
Subject: [oCERT 2014-008] libFLAC multiple issues


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

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


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


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



  Daniele Bianco      Open Source Computer Security Incident Response Team

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

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