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Date: Tue, 11 Apr 2017 17:39:29 +0200
From: "Securify B.V." <lists@...urify.nl>
To: fulldisclosure@...lists.org
Subject: [FD] Multiple local privilege escalation vulnerabilities in
 Proxifier for Mac

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Multiple local privilege escalation vulnerabilities in Proxifier for Mac
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Yorick Koster, April 2017

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Abstract
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Multiple local privileges escalation vulnerabilities were found in the
KLoader binary that ships with Proxifier. KLoader is responsible for
loading a Kernel Extension (kext). KLoader is installed setuid root, it
accepts one or two command line arguments that are used in a number of
system commands. These arguments are used in an insecure manner allowing
a local attacker to elevate its privileges. In addition, the environment
is not properly sanitized, which also introduces an possibility to run
arbitrary commands with elevated privileges.

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Tested versions
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These issues were successfully verified on Proxifier for Mac v2.18.

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Fix
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Proxifier v2.19 was released that addresses these issues.

------------------------------------------------------------------------
Details
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https://www.securify.nl/advisory/SFY20170401/multiple_local_privilege_escalation_vulnerabilities_in_proxifier_for_mac.html

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