CVE-2018-7738
Ubuntu umount Command Injection Vulnerability
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.
INFO
Published Date :
March 7, 2018, 2:29 a.m.
Last Modified :
Dec. 13, 2024, 2:15 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | HIGH | [email protected] | ||||
| CVSS 3.0 | HIGH | [email protected] |
Solution
- Update the util-linux packages to the latest version.
- Use your system's package manager for updates.
Public PoC/Exploit Available at Github
CVE-2018-7738 has a 4 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2018-7738.
| URL | Resource |
|---|---|
| http://www.securityfocus.com/bid/103367 | Third Party Advisory VDB Entry |
| https://bugs.debian.org/892179 | Patch Third Party Advisory |
| https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55 | Patch Third Party Advisory |
| https://github.com/karelzak/util-linux/issues/539 | Issue Tracking Third Party Advisory |
| https://usn.ubuntu.com/4512-1/ | |
| https://www.debian.org/security/2018/dsa-4134 | Third Party Advisory |
| http://www.securityfocus.com/bid/103367 | Third Party Advisory VDB Entry |
| https://bugs.debian.org/892179 | Patch Third Party Advisory |
| https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55 | Patch Third Party Advisory |
| https://github.com/karelzak/util-linux/issues/539 | Issue 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-4134 | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2018-7738 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2018-7738
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
None
None
✍️ A curated list of CVE PoCs.
awesome cve poc
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2018-7738 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2018-7738 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Dec. 13, 2024
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20241213-0002/ -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/103367 Added Reference https://bugs.debian.org/892179 Added Reference https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55 Added Reference https://github.com/karelzak/util-linux/issues/539 Added Reference https://usn.ubuntu.com/4512-1/ Added Reference https://www.debian.org/security/2018/dsa-4134 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Sep. 25, 2020
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4512-1/ [No Types Assigned] -
CWE Remap by [email protected]
Oct. 03, 2019
Action Type Old Value New Value Changed CWE CWE-264 NVD-CWE-noinfo -
CPE Deprecation Remap by [email protected]
Jan. 04, 2019
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:util-linux_project:util-linux:*:*:*:*:*:*:*:* versions from (including) 2.31.1 OR *cpe:2.3:a:kernel:util-linux:*:*:*:*:*:*:*:* versions from (including) 2.31 -
Initial Analysis by [email protected]
Mar. 29, 2018
Action Type Old Value New Value Added CVSS V2 (AV:L/AC:L/Au:N/C:C/I:C/A:C) Added CVSS V3 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type http://www.securityfocus.com/bid/103367 No Types Assigned http://www.securityfocus.com/bid/103367 Third Party Advisory, VDB Entry Changed Reference Type https://bugs.debian.org/892179 No Types Assigned https://bugs.debian.org/892179 Patch, Third Party Advisory Changed Reference Type https://github.com/karelzak/util-linux/issues/539 No Types Assigned https://github.com/karelzak/util-linux/issues/539 Issue Tracking, Third Party Advisory Changed Reference Type https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55 No Types Assigned https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55 Patch, Third Party Advisory Changed Reference Type https://www.debian.org/security/2018/dsa-4134 No Types Assigned https://www.debian.org/security/2018/dsa-4134 Third Party Advisory Added CWE CWE-264 Added CPE Configuration OR *cpe:2.3:a:util-linux_project:util-linux:*:*:*:*:*:*:*:* versions up to (including) 2.31.1 -
CVE Modified by [email protected]
Mar. 14, 2018
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/103367 [No Types Assigned] -
CVE Modified by [email protected]
Mar. 12, 2018
Action Type Old Value New Value Added Reference https://www.debian.org/security/2018/dsa-4134 [No Types Assigned]
Vulnerability Scoring Details
Base CVSS Score: 7.8
Base CVSS Score: 7.2
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.05 }} -0.00%
score
0.16922
percentile