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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
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<glsa id="202105-19">
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<title>Firejail: Privilege escalation</title>
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<synopsis>A vulnerability was discovered in Firejail which may allow local
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attackers to gain root privileges.
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</synopsis>
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<product type="ebuild">firejail</product>
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<announced>2021-05-26</announced>
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<revised count="1">2021-05-26</revised>
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<bug>769542</bug>
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<access>local</access>
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<affected>
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<package name="sys-apps/firejail" auto="yes" arch="*">
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<unaffected range="ge">0.9.64.4</unaffected>
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<vulnerable range="lt">0.9.64.4</vulnerable>
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</package>
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</affected>
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<background>
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<p>A SUID program that reduces the risk of security breaches by restricting
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the running environment of untrusted applications using Linux namespaces
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and seccomp-bpf.
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</p>
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</background>
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<description>
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<p>It was discovered that a flaw in Firejail’s OverlayFS code allowed
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restricted programs to escape sandbox.
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</p>
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</description>
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<impact type="high">
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<p>A local attacker could obtain arbitrary file system access via an
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application running within a Firejail sandbox, possibly resulting in
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privilege escalation.
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</p>
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</impact>
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<workaround>
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<p>There is no known workaround at this time.</p>
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</workaround>
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<resolution>
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<p>All Firejail users should upgrade to the latest version:</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose ">=sys-apps/firejail-0.9.64.4"
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</code>
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</resolution>
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<references>
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<uri link="https://nvd.nist.gov/vuln/detail/CVE-2021-26910">CVE-2021-26910</uri>
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</references>
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<metadata tag="requester" timestamp="2021-05-25T20:22:19Z">whissi</metadata>
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<metadata tag="submitter" timestamp="2021-05-26T08:38:46Z">whissi</metadata>
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</glsa>
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