Secunia Research: Linux Kernel USB over IP Memory Address Information Disclosure Vulnerability

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                     Secunia Research 2017/12/11
 
 Linux Kernel USB Memory Address Information Disclosure 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 .......................................................8
Verification.........................................................9
 
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1) Affected Software

Linux Kernel versions 4.14.x prior to 4.14.8.
 
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2) Severity
 
Rating: Not critical
Impact: Information Disclosure
Where:  Local System
 
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3) Description of Vulnerability
 
Secunia Research has discovered a vulnerability in Linux Kernel, which
can be exploited by malicious, local users to disclose potentially
sensitive information.

An error in the vhci_hcd driver can be exploited to disclose
otherwise restricted kernel memory address.

Successful exploitation of this vulnerability requires a USB device
attached over IP.

The vulnerability is confirmed in version 4.14.0-rc1 and reported
in versions 4.14.x prior to 4.14.8.
 
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4) Solution
 
Update to version 4.14.8.
 
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5) Time Table
 
2017/11/29 - Linux Kernel team contacted with vulnerability details.
2017/11/29 - Linux Kernel team confirmed the vulnerability.
2017/12/07 - Public disclosure of the vulnerability.
2017/12/11 - Release of Secunia Advisory SA77000.
2017/12/11 - Public disclosure of Secunia Research Advisory.
2017/12/21 - Moved this vulnerability from Secunia Advisory SA77000
             to SA80454. Updated Secunia Research Advisory
             due to a GIT commit having been applied and certain
             fixed versions having been released.
2017/12/27 - Updated due to an update of Secunia Advisory SA80454.
 
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6) Credits
 
Jakub Jirasek, Secunia Research at Flexera.
 
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7) References
 
The Flexera CNA has assigned the CVE-2017-16911 identifier for the
vulnerability through the Common Vulnerabilities and Exposures (CVE)
project.
 
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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/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://www.flexera.com/enterprise/company/about/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://secuniaresearch.flexerasoftware.com/community/advisories/
 
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9) Verification
 
Please verify this advisory by visiting the Secunia Research website:
https://secuniaresearch.flexerasoftware.com/secunia_research/2017-20
 
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