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.
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References
History
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MITRE
Status: PUBLISHED
Assigner: mitre
Published: 2022-06-09T00:00:00
Updated: 2024-08-03T07:11:39.674Z
Reserved: 2022-05-19T00:00:00
Link: CVE-2022-31214
Vulnrichment
No data.
NVD
Status : Modified
Published: 2022-06-09T16:15:08.977
Modified: 2024-11-21T07:04:08.840
Link: CVE-2022-31214
Redhat
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