CVE-2018-7738 Affecting util-linux package, versions <2.29.2-1+deb9u1
Snyk CVSS
Threat Intelligence
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk ID SNYK-DEBIAN9-UTILLINUX-285844
- published 7 Mar 2018
- disclosed 7 Mar 2018
Introduced: 7 Mar 2018
CVE-2018-7738 Open this link in a new tabHow to fix?
Upgrade Debian:9
util-linux
to version 2.29.2-1+deb9u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream util-linux
package and not the util-linux
package as distributed by Debian
.
See How to fix?
for Debian:9
relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2018-7738
- https://bugs.debian.org/892179
- https://www.debian.org/security/2018/dsa-4134
- https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55
- https://github.com/karelzak/util-linux/issues/539
- http://www.securityfocus.com/bid/103367
- https://usn.ubuntu.com/4512-1/
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-7738