CVEvulnerability
CVE-2018-7738
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2018-03-07
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 7.8 HIGH — CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 7.2 HIGH — AV:L/AC:L/Au:N/C:C/I:C/A:C
Description
In util-linux before 2.32-rc1, bash-completion/umount allows local users to gain privileges by embedding shell commands in a mountpoint name, which is mishandled during a umount command (within Bash) by a different user, as demonstrated by logging in as root and entering umount followed by a tab character for autocompletion.
Affected configurations
• kernel util-linux (<= 2.31)
References
- http://www.securityfocus.com/bid/103367 Third Party Advisory, VDB Entry
- https://bugs.debian.org/892179 Patch, Third Party Advisory
- https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55 Patch, Third Party Advisory
- https://github.com/karelzak/util-linux/issues/539 Issue Tracking, Third Party Advisory
- https://usn.ubuntu.com/4512-1/ usn.ubuntu.com
- https://www.debian.org/security/2018/dsa-4134 Third Party Advisory
- http://www.securityfocus.com/bid/103367 Third Party Advisory, VDB Entry
- https://bugs.debian.org/892179 Patch, Third Party Advisory
- https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55 Patch, Third Party Advisory
- https://github.com/karelzak/util-linux/issues/539 Issue Tracking, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20241213-0002/ security.netapp.com
- https://usn.ubuntu.com/4512-1/ usn.ubuntu.com
- https://www.debian.org/security/2018/dsa-4134 Third Party Advisory