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CVE-2018-7738

Date: March 6, 2018

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.

Language: DEBIAN

Severity Score

Related Resources (11)

https://people.canonical.com/~ubuntu-security/cve/CVE-2018-7738
https://security-tracker.debian.org/tracker/CVE-2018-7738
http://www.securityfocus.com/bid/103367
https://security.netapp.com/advisory/ntap-20241213-0002/
https://nvd.nist.gov/vuln/detail/CVE-2018-7738
https://bugs.debian.org/892179
https://github.com/karelzak/util-linux/issues/539
https://www.debian.org/security/2018/dsa-4134
https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55
https://usn.ubuntu.com/4512-1/
https://www.mend.io/vulnerability-database/CVE-2018-7738

Severity Score

Weakness Type (CWE)

Insufficient Information

NVD-CWE-noinfo

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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