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CVE-2022-31214

7.8 · HIGH

A Privilege Context Switching issue was discovered in join.c in Firejail 0.9.68.

Published Jun 9, 2022CWE-269EPSS 0.39%

Overview

CVE-2022-31214 is a high-severity vulnerability. It was published on June 9, 2022 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A Privilege Context Switching issue was discovered in join.c in Firejail 0.9.68. By crafting a bogus Firejail container that is accepted by the Firejail setuid-root program as a join target, a local attacker can enter an environment in which the Linux user namespace is still the initial user namespace, the NO_NEW_PRIVS prctl is not activated, and the entered mount namespace is under the attacker's control. In this way, the filesystem layout can be adjusted to gain root privileges through execution of available setuid-root binaries such as su or sudo.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Reffirejail.wordpress.com/download-2/release-notes/Reflists.debian.org/debian-lts-announce/2022/06/msg00023.htmlReflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6RZOTZ36RUSL6DOVHITY25ZYKWTG5HN3/Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KUZZ5M6LIBYRKTKGROXC47TDC3FRTGJF/Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SIBEBE3KFINMGJATBQQS7D2VQQ62ZVMF/Refsecurity.gentoo.org/glsa/202305-19Refwww.debian.org/security/2022/dsa-5167Refwww.openwall.com/lists/oss-security/2022/06/08/10Reffirejail.wordpress.com/download-2/release-notes/Reflists.debian.org/debian-lts-announce/2022/06/msg00023.html

How CyberStrike helps

Frequently asked questions

What is CVE-2022-31214?

CVE-2022-31214 is a high-severity vulnerability. It was published on June 9, 2022 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-31214?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-31214?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-31214?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-31214 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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