CVE-2018-7738
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.43%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.43% probability · 37th percentile
- CISA KEV
- Not listed
- Affected
- kernel/util-linux
- Source
- cve@mitre.org
References
- http://www.securityfocus.com/bid/103367Third Party Advisory, VDB Entry
- https://bugs.debian.org/892179Patch, Third Party Advisory
- https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55Patch, Third Party Advisory
- https://github.com/karelzak/util-linux/issues/539Issue Tracking, Third Party Advisory
- https://usn.ubuntu.com/4512-1/
- https://www.debian.org/security/2018/dsa-4134Third Party Advisory
- http://www.securityfocus.com/bid/103367Third Party Advisory, VDB Entry
- https://bugs.debian.org/892179Patch, Third Party Advisory
- https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55Patch, Third Party Advisory
- https://github.com/karelzak/util-linux/issues/539Issue Tracking, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20241213-0002/
- https://usn.ubuntu.com/4512-1/
- https://www.debian.org/security/2018/dsa-4134Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.