CVE-2021-40084
OpenSysusers Shell Injection Vulnerability
Description
opensysusers through 0.6 does not safely use eval on files in sysusers.d that may contain shell metacharacters. For example, it allows command execution via a crafted GECOS field whereas systemd-sysusers (a program with the same specification) does not do that.
INFO
Published Date :
Aug. 25, 2021, 1:15 a.m.
Last Modified :
Nov. 21, 2024, 6:23 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
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-2021-40084.
| URL | Resource |
|---|---|
| https://bugs.debian.org/992058 | Exploit Mailing List Third Party Advisory |
| https://github.com/artix-linux/opensysusers/releases | Release Notes Third Party Advisory |
| https://bugs.debian.org/992058 | Exploit Mailing List Third Party Advisory |
| https://github.com/artix-linux/opensysusers/releases | Release Notes Third Party Advisory |
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-40084 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-40084 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
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://bugs.debian.org/992058 Added Reference https://github.com/artix-linux/opensysusers/releases -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CWE Remap by [email protected]
Jul. 12, 2022
Action Type Old Value New Value Changed CWE CWE-77 CWE-94 -
Initial Analysis by [email protected]
Aug. 31, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://bugs.debian.org/992058 No Types Assigned https://bugs.debian.org/992058 Exploit, Mailing List, Third Party Advisory Changed Reference Type https://github.com/artix-linux/opensysusers/releases No Types Assigned https://github.com/artix-linux/opensysusers/releases Release Notes, Third Party Advisory Added CWE NIST CWE-77 Added CPE Configuration OR *cpe:2.3:a:artixlinux:opensysusers:*:*:*:*:*:*:*:* versions up to (including) 0.6
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-40084 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-2021-40084
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.28 }} -2.06%
score
0.77696
percentile