CVE-2023-28642

Published: 29 March 2023

runc is a CLI tool for spawning and running containers according to the OCI specification. It was found that AppArmor can be bypassed when `/proc` inside the container is symlinked with a specific mount configuration. This issue has been fixed in runc version 1.1.5, by prohibiting symlinked `/proc`. See PR #3785 for details. users are advised to upgrade. Users unable to upgrade should avoid using an untrusted container image.

Priority

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package	Release	Status
runc Launchpad, Ubuntu, Debian	xenial	Released (1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm4) Available with Ubuntu Pro
	trusty	Ignored (end of standard support)
	bionic	Released (1.1.4-0ubuntu1~18.04.2)
	focal	Released (1.1.4-0ubuntu1~20.04.3)
	jammy	Released (1.1.4-0ubuntu1~22.04.3)
	kinetic	Released (1.1.4-0ubuntu1~22.10.3)
	upstream	Released (1.1.5+ds1-1)
	lunar	Released (1.1.4-0ubuntu3.1)

Severity score breakdown

Parameter	Value
Base score	7.8
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

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