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Secunia Research 2018/01/29
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 Software...............................................8
Verification.........................................................9
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1) Affected Software
* LibRaw versions prior to 0.18.7.
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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) An off-by-one error within the "LibRaw::kodak_ycbcr_load_raw()"
function (internal/dcraw_common.cpp) can be exploited to cause a heap-
based buffer overflow and subsequently cause a crash.
2) An error within the "LibRaw::unpack()" function
(src/libraw_cxx.cpp) can be exploited to trigger a NULL pointer
dereference.
3) An error within the "kodak_radc_load_raw()" function
(internal/dcraw_common.cpp) related to the "buf" variable can be
exploited to cause an out-of-bounds read memory access and
subsequently cause a crash.
Successful exploitation of this vulnerability requires the library to
be compiled with the "-O0" compilation flag.
The vulnerabilities are confirmed in version 0.18.6 and reported in
versions prior to 0.18.7.
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4) Solution
Update to version 0.18.7.
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5) Time Table
2018/01/16 - Maintainer contacted with the vulnerability details.
2018/01/19 - Maintainer confirmed the vulnerabilities.
2018/01/19 - Maintainer released a fix.
2018/01/25 - Release of Secunia Advisory SA79000.
2018/01/29 - Public disclosure of Secunia Research Advisory.
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6) Credits
Laurent Delosieres, Secunia Research at Flexera Software.
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7) References
The Flexera Software CNA has assigned the CVE-2018-5800,
CVE-2018-5801, and CVE-2018-5802 identifiers for the vulnerabilities
through the Common Vulnerabilities and Exposures (CVE) project.
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8) About Flexera Software
Flexera helps application producers and enterprises increase
application usage and the value they derive from their software.
http://www.flexerasoftware.com/enterprise/company/about/
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.
http://www.flexerasoftware.com/enterprise/products/
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://secuniaresearch.flexerasoftware.com/community/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://secuniaresearch.flexerasoftware.com/community/advisories/
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9) Verification
Please verify this advisory by visiting the website:
https://secuniaresearch.flexerasoftware.com/secunia_research/2018-01
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