CVE Vulnerability

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 root and entering umount followed by a tab character for autocompletion.

7.2 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 10

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

Scope

7.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/karelzak/util-linux/issues/539 Issue Tracking Third Party Advisory
https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55 Patch Third Party Advisory
https://bugs.debian.org/892179 Patch Third Party Advisory
https://www.debian.org/security/2018/dsa-4134 Third Party Advisory
http://www.securityfocus.com/bid/103367 Third Party Advisory VDB Entry
https://usn.ubuntu.com/4512-1/
Configurations

Configuration 1

cpe:2.3:a:kernel:util-linux:*:*:*:*:*:*:*:*
Information

Published : 2018-03-07 02:29

Updated : 2020-09-25 06:15

NVD link : CVE-2018-7738

Mitre link : CVE-2018-7738

Products Affected
No products.
CWE
NVD-CWE-noinfo