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                    Secunia Research 2018/12/13
                                            
         LibRaw Multiple Denial of Service Vulnerabilities

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Table of Contents

Affected Software....................................................1
Severity.............................................................2
Description of Vulnerabilities.......................................3
Solution.............................................................4
Time Table...........................................................5
Credits..............................................................6
References...........................................................7
About Flexera........................................................8
Verification.........................................................9

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1) Affected Software

*  LibRaw versions prior to  0.19.1.

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2) Severity

Rating: Moderately critical
Impact: Denial of Service
Where:  From remote

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3) Description of Vulnerabilities

Secunia Research has discovered multiple vulnerabilities in LibRaw,
which can be exploited by malicious people to  cause a DoS
(Denial of Service).

1) A type confusion error within the "unpacked_load_raw()" function
(internal/dcraw_common.cpp) can be exploited to trigger an infinite
loop.

2) An error within the "parse_rollei()" function
(internal/dcraw_common.cpp) can be exploited to trigger an infinite
loop.

3) An error within the "parse_sinar_ia()" function
(internal/dcraw_common.cpp) can be exploited to exhaust available
CPU resources.

The vulnerabilities are confirmed in version 0.19.0 and reported in
versions prior to 0.19.1.

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4) Solution

Update to version 0.19.1.

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5) Time Table

2018/11/22 - Maintainer contacted with the vulnerability details.
2018/11/23 - Maintainer confirmed the vulnerability.
2018/11/23 - Maintainer released a fix.
2018/12/03 - Release of Secunia Advisory SA86384.
2018/12/13 - Public disclosure of Secunia Research Advisory.

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6) Credits

Laurent Delosieres, Secunia Research at Flexera.

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7) References

The Common Vulnerabilities and Exposures (CVE) project has assigned
the CVE-2018-5817, CVE-2018-5818, and CVE-2018-5819 identifiers for
the vulnerability.

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8) About Flexera

Flexera  helps  application  producers  and  enterprises  increase
application usage and the value they derive from their software.

http://www.flexera.com

Flexera delivers market-leading Software Vulnerability Management
solutions  enabling  enterprises  to  proactively  identify  and
remediate software vulnerabilities, effectively reducing the risk of
costly security breaches.

https://www.flexera.com/products/software-vulnerability-management

Flexera  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 and today
our in-house software vulnerability research remains the core of
the Software Vulnerability Management products at Flexera.

https://www.flexera.com/company/secunia-research/

The  public Secunia Advisory database  contains  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.

https://www.flexera.com/company/secunia-research/advisories/

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9) Verification

Please verify this advisory by visiting the website:
https://www.flexera.com/company/secunia-research/advisories/SR-2018-27.html

Complete list of vulnerability reports published by Secunia Research:
https://www.flexera.com/company/secunia-research/advisories/

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