Unrated severityNVD Advisory· Published Mar 6, 2018· Updated Dec 13, 2024
CVE-2018-7738
CVE-2018-7738
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
52- Range: < 2.32-rc1
- osv-coords51 versionspkg:rpm/opensuse/python-libmount&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/python-libmount&distro=openSUSE%20Leap%2015.5pkg:rpm/suse/python-libmount&distro=SUSE%20Enterprise%20Storage%204pkg:rpm/suse/python-libmount&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP3pkg:rpm/suse/python-libmount&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/python-libmount&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/python-libmount&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3pkg:rpm/suse/python-libmount&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/python-libmount&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/python-libmount&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/python-libmount&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/python-libmount&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/util-linux&distro=SUSE%20Enterprise%20Storage%204pkg:rpm/suse/util-linux&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP3pkg:rpm/suse/util-linux&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/util-linux&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/util-linux&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015pkg:rpm/suse/util-linux&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/util-linux&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/util-linux&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3pkg:rpm/suse/util-linux&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/util-linux&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/util-linux&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/util-linux&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/util-linux&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/util-linux&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/util-linux&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/util-linux&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/util-linux&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP3pkg:rpm/suse/util-linux&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/util-linux&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2012%20SP3pkg:rpm/suse/util-linux&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2012%20SP5pkg:rpm/suse/util-linux&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/util-linux-systemd&distro=SUSE%20Enterprise%20Storage%204pkg:rpm/suse/util-linux-systemd&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP3pkg:rpm/suse/util-linux-systemd&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/util-linux-systemd&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/util-linux-systemd&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015pkg:rpm/suse/util-linux-systemd&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015pkg:rpm/suse/util-linux-systemd&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/util-linux-systemd&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/util-linux-systemd&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3pkg:rpm/suse/util-linux-systemd&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/util-linux-systemd&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/util-linux-systemd&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/util-linux-systemd&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/util-linux-systemd&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/util-linux-systemd&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/util-linux-systemd&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/util-linux-systemd&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/util-linux-systemd&distro=SUSE%20OpenStack%20Cloud%207
< 2.31.1-150000.9.24.1+ 50 more
- (no CPE)range: < 2.31.1-150000.9.24.1
- (no CPE)range: < 2.31.1-150000.9.24.1
- (no CPE)range: < 2.28-44.18.38
- (no CPE)range: < 2.29.2-3.8.1
- (no CPE)range: < 2.28-44.18.38
- (no CPE)range: < 2.28-44.18.38
- (no CPE)range: < 2.29.2-3.8.1
- (no CPE)range: < 2.33.2-4.33.1
- (no CPE)range: < 2.28-44.18.38
- (no CPE)range: < 2.29.2-3.8.1
- (no CPE)range: < 2.33.2-4.33.1
- (no CPE)range: < 2.28-44.18.38
- (no CPE)range: < 2.28-44.18.18
- (no CPE)range: < 2.29.2-3.8.1
- (no CPE)range: < 2.33.2-150100.4.40.1
- (no CPE)range: < 2.33.2-150100.4.40.1
- (no CPE)range: < 2.31.1-9.3.1
- (no CPE)range: < 2.28-44.18.18
- (no CPE)range: < 2.28-44.18.18
- (no CPE)range: < 2.29.2-3.8.1
- (no CPE)range: < 2.33.2-4.33.1
- (no CPE)range: < 2.33.2-150100.4.40.1
- (no CPE)range: < 2.33.2-150100.4.40.1
- (no CPE)range: < 2.28-44.18.18
- (no CPE)range: < 2.29.2-3.8.1
- (no CPE)range: < 2.33.2-4.33.1
- (no CPE)range: < 2.33.2-150100.4.40.1
- (no CPE)range: < 2.33.2-150100.4.40.1
- (no CPE)range: < 2.29.2-3.8.1
- (no CPE)range: < 2.33.2-4.33.1
- (no CPE)range: < 2.29.2-3.8.1
- (no CPE)range: < 2.33.2-4.33.1
- (no CPE)range: < 2.28-44.18.18
- (no CPE)range: < 2.28-44.18.25
- (no CPE)range: < 2.29.2-3.8.1
- (no CPE)range: < 2.33.2-150100.4.40.1
- (no CPE)range: < 2.33.2-150100.4.40.1
- (no CPE)range: < 2.31.1-9.3.1
- (no CPE)range: < 2.31.1-9.3.1
- (no CPE)range: < 2.28-44.18.25
- (no CPE)range: < 2.28-44.18.25
- (no CPE)range: < 2.29.2-3.8.1
- (no CPE)range: < 2.33.2-4.33.1
- (no CPE)range: < 2.33.2-150100.4.40.1
- (no CPE)range: < 2.33.2-150100.4.40.1
- (no CPE)range: < 2.28-44.18.25
- (no CPE)range: < 2.29.2-3.8.1
- (no CPE)range: < 2.33.2-4.33.1
- (no CPE)range: < 2.33.2-150100.4.40.1
- (no CPE)range: < 2.33.2-150100.4.40.1
- (no CPE)range: < 2.28-44.18.25
Patches
Vulnerability mechanics
No source-code context for this CVE — mechanics is only generated when we can read the actual fix diff. Without that, the four sections (root cause, attack vector, affected code, fix) would be speculation rather than analysis.
References
6- usn.ubuntu.com/4512-1/mitrevendor-advisoryx_refsource_UBUNTU
- www.debian.org/security/2018/dsa-4134mitrevendor-advisoryx_refsource_DEBIAN
- www.securityfocus.com/bid/103367mitrevdb-entryx_refsource_BID
- bugs.debian.org/892179mitrex_refsource_MISC
- github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55mitrex_refsource_MISC
- github.com/karelzak/util-linux/issues/539mitrex_refsource_MISC
News mentions
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