Stack-based buffer overflow in cifs-utils - CVE-2022-27239
Published: June 2, 2022
Vulnerability identifier: #VU63956
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Clear
CVE-ID: CVE-2022-27239
CWE-ID: CWE-121
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Distrotech
Affected software:
cifs-utils
cifs-utils
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when parsing the "mount.cifs ip=" command-line argument. A local user can pass specially crafted data to the command, trigger a stack-based buffer overflow and execute arbitrary code with root privileges.
How to mitigate CVE-2022-27239
Install updates from vendor's website.
Sources
- http://wiki.robotz.com/index.php/Linux_CIFS_Utils_and_Samba
- https://bugzilla.samba.org/show_bug.cgi?id=15025
- https://bugzilla.suse.com/show_bug.cgi?id=1197216
- https://github.com/piastry/cifs-utils/pull/7
- https://github.com/piastry/cifs-utils/pull/7/commits/955fb147e97a6a74e1aaa65766de91e2c1479765
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QIYZ4L6SLSYJQ446VJAO2VGAESURQNSP/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HXKZLJYJJEC3TIBFLXUORRMZUKG5W676/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5WBOLMANBYJILXQKRRK7OCR774PXJAYY/
- https://lists.debian.org/debian-lts-announce/2022/05/msg00020.html