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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202201-01">
<title>Polkit: Local privilege escalation</title>
<synopsis>A vulnerability in polkit could lead to local root privilege escalation.
</synopsis>
<product type="ebuild">polkit</product>
<announced>2022-01-27</announced>
<revised count="1">2022-01-27</revised>
<bug>832057</bug>
<access>local</access>
<affected>
<package name="sys-auth/polkit" auto="yes" arch="*">
<unaffected range="ge">0.120-r2</unaffected>
<vulnerable range="lt">0.120-r2</vulnerable>
</package>
</affected>
<background>
<p>polkit is a toolkit for managing policies related to unprivileged processes communicating with privileged process. </p>
</background>
<description>
<p>Flawed input validation of arguments was discovered in the 'pkexec' program's main() function.</p>
</description>
<impact type="high">
<p>A local attacker could achieve root privilege escalation.</p>
</impact>
<workaround>
<p>Run the following command as root:
# chmod 0755 /usr/bin/pkexec</p>
</workaround>
<resolution>
<p>Upgrade Polkit to a patched version.</p>
<code>
# emerge --sync
# emerge --ask --verbose ">=sys-auth/polkit-0.120-r2"
</code>
</resolution>
<references>
<uri link="https://nvd.nist.gov/vuln/detail/CVE-2021-4034">CVE-2021-4034</uri>
</references>
<metadata tag="requester" timestamp="2022-01-27T04:56:33.847737Z">sam</metadata>
<metadata tag="submitter" timestamp="2022-01-27T04:56:33.851433Z">sam</metadata>
</glsa>
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