CVE-2023-0386

high

Description

A flaw was found in the Linux kernel, where unauthorized access to the execution of the setuid file with capabilities was found in the Linux kernel’s OverlayFS subsystem in how a user copies a capable file from a nosuid mount into another mount. This uid mapping bug allows a local user to escalate their privileges on the system.

References

https://blog.christophetd.fr/stop-worrying-about-allowprivilegeescalation/

https://www.debian.org/security/2023/dsa-5402

https://security.netapp.com/advisory/ntap-20230420-0004/

https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0a

http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html

Details

Source: Mitre, NVD

Published: 2023-03-22

Updated: 2023-06-26

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High