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Secunia Research: FLAC "read_metadata_vorbiscomment_()" Memory Leak Denial of Service Vulnerability



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                    Secunia Research 2017/05/11

					

        FLAC "read_metadata_vorbiscomment_()" Memory Leak

                 Denial of Service Vulnerability



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Table of Contents



Affected Software....................................................1

Severity.............................................................2

Description of Vulnerability.........................................3

Solution.............................................................4

Time Table...........................................................5

Credits..............................................................6

References...........................................................7

About Flexera Software...............................................8

Verification.........................................................9



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1) Affected Software



* FLAC version 1.3.2. Other versions may also be affected.



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2) Severity



Rating: Moderately critical

Impact: Denial of Service

Where:  From remote



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3) Description of Vulnerability



Secunia Research has discovered a vulnerability in FLAC, which can be

exploited by malicious people to cause a DoS (Denial of Service).



The vulnerability is caused due to an error in the

"read_metadata_vorbiscomment_()" function (stream_decoder.c), which

can be exploited to cause a memory leak via a specially crafted FLAC

file.



The vulnerability is confirmed in version 1.3.2. Other versions may

also be affected.



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4) Solution



Fixed in the source code repository.



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5) Time Table



2017/04/06 - Initial contact to request security contact.

2017/04/06 - Maintainer responds with security contact.

2017/04/06 - Maintainer contacted with the vulnerability details.

2017/04/08 - Maintainer provides a patch in the official source

             code repository.

2017/04/21 - Release of Secunia Advisory SA76102.

2017/05/11 - Public disclosure of Secunia Research Advisory.



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6) Credits



Discovered by Jakub Jirasek, Secunia Research at Flexera Software.



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7) References



The Flexera Software CNA has assigned the CVE-2017-6888 identifier

for the vulnerability through the Common Vulnerabilities and Exposures

(CVE) project.



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8) About Flexera Software



Flexera Software helps application producers and enterprises increase

application usage and the value they derive from their software.



http://www.flexerasoftware.com/enterprise/company/about/



Flexera Software  delivers  market-leading  Software  Vulnerability

Management solutions enabling enterprises to proactively identify and

remediate software vulnerabilities, effectively reducing the risk of

costly security breaches.



http://www.flexerasoftware.com/enterprise/products/



Flexera  Software  supports  and  contributes  to  the community in

several ways.  We have always believed that reliable vulnerability

intelligence and tools to aid identifying and fixing vulnerabilities

should be  freely available  for  consumers  to ensure that users,

who care about their online privacy and security, can stay secure.

Only a few vendors address vulnerabilities in a proper way and help

users get updated  and  stay secure.  End-users (whether private

individuals or businesses) are otherwise left largely alone,  and

that is why back in 2002, Secunia Research started investigating,

coordinating  disclosure  and  verifying software vulnerabilities.

In  2016,  Secunia Research  became  a  part  of  Flexera Software

and today our in-house software vulnerability research remains the

core  of  the  Software  Vulnerability  Management  products  at

Flexera Software.



http://secunia.com/secunia_research/



The  public  Advisory database  contains sufficient information  for

researchers, security enthusiasts, and consumers to lookup individual

products and vulnerabilities  and  assess, whether they need to take

any actions to secure their systems or whether a given vulnerability

has already been discovered



http://secunia.com/advisories/



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9) Verification



Please verify this advisory by visiting the Secunia website:

http://secunia.com/secunia_research/2017-7/



Complete list of vulnerability reports published by Secunia Research:

http://secunia.com/secunia_research/



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