Vigil@nce - Linux kernel: SELinux validation bypass for netlink messages
July 2020 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer/Computer-vulnerabilities-watch-and-alert
SYNTHESIS OF THE VULNERABILITY
Impacted products: Debian, Linux, openSUSE Leap, Slackware, SLES,
Ubuntu.
Severity: 2/4.
Consequences: administrator access/rights, privileged
access/rights.
Provenance: user shell.
Confidence: confirmed by the editor (5/5).
Creation date: 27/05/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker can bypass SELinux restrictions on netlink messages by
bundling them into a unique system call.
ACCESS TO THE FULL VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/Linux-kernel-SELinux-validation-bypass-for-netlink-messages-32346