Secunia Research: LibRaw "parse_tiff_ifd()" Memory Corruption Vulnerability

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                    Secunia Research 2017/05/11

    LibRaw "parse_tiff_ifd()" Memory Corruption 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

* LibRaw 0.x

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2) Severity

Rating: Highly critical
Impact: Denial of Service and System Access
Where:  From remote

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3) Description of Vulnerability

Secunia Research has discovered a vulnerability in LibRaw, which can
be exploited by malicious people to cause a DoS (Denial of Service)
and compromise a vulnerable system.

1) An error within the "parse_tiff_ifd()" function
(internal/dcraw_common.cpp) can be exploited to corrupt memory.

The vulnerability is confirmed in version 0.18.1. Prior versions may
also be affected.

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4) Solution

Apply update.
http://www.libraw.org/news/libraw-0-18-2

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5) Time Table

2017/03/08 - Vendor notified about vulnerability.
2017/03/08 - Vendor response.
2017/03/09 - Release of vendor patch.
2017/03/10 - Release of Secunia Advisory SA75737.
2017/05/11 - Public disclosure of Secunia Research Advisory.

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6) Credits

Jakub Jirasek, Secunia Research at Flexera Software.

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7) References

The Flexera Software CNA has assigned the CVE-2017-6886 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:
https://secuniaresearch.flexerasoftware.com/secunia_research/2017-5/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

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