glsa-202201-01.xml


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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 &#39;pkexec&#39; program&#39;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 &#34;&gt;=sys-auth/polkit-0.120-r2&#34;
		</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>