Vulnerability Note VU#544656

libFLAC contains multiple vulnerabilities

Original Release date: 15 Nov 2007 | Last revised: 19 Nov 2007


libFLAC contains multiple vulnerabilities, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.


FLAC (Free Lossless Audio Codec) is a lossless audio format. libFLAC is a library that can process FLAC files. libFLAC contains multiple vulnerabilities, including:

  • Metadata Block Size Heap Overflow
  • VORBIS Comment String Size Field Heap Overflow
  • VORBIS Comment String Size Length Stack Overflow
  • Picture MIME-Type Size Heap Overflow
  • Picture MIME-Type Size Stack Overflow
  • Picture Dimension Size Heap Overflow
  • Picture Description Size Heap Overflow
  • Picture Description Length Stack Overflow
  • Picture Data Length Heap Overflow
  • Picture URL Stack Overflow
  • Malformed Image/File Download Vulnerability
  • Padding Length Heap Overflow
  • Seektable Out-Of-Scope Double Free Condition
  • Malformed Seektable Double Free Condition
Please see eEye advisory AD20071115 for more details.


By convincing a user to open a specially crafted FLAC file, a remote, unauthenticated attacker may be able to execute arbitrary code or cause a denial-of-service condition on a vulnerable system.


Apply an update
These issues are addressed in version 1.2.1 of the FLAC library. Please see the Systems Affected section for fix availability for specific products.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
America Online, Inc.Affected12 Oct 200715 Nov 2007
CogAffected12 Oct 200715 Nov 2007
dBpowerampAffected12 Oct 200715 Nov 2007
FLACAffected27 Sep 200715 Nov 2007
Foobar2000Affected12 Oct 200715 Nov 2007
jetAudioAffected12 Oct 200715 Nov 2007
PhatBoxAffected12 Oct 200715 Nov 2007
Yahoo, Inc.Affected12 Oct 200715 Nov 2007
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A



This vulnerability was reported by Andre Protas of eEye Digital Security, who in turn credit Greg Linares.

This document was written by Will Dormann.

Other Information

  • CVE IDs: CVE-2007-4619
  • Date Public: 11 Oct 2007
  • Date First Published: 15 Nov 2007
  • Date Last Updated: 19 Nov 2007
  • Severity Metric: 5.06
  • Document Revision: 15


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