CVE-2021-35938
RPM Symbolic Link Escalation Vulnerability
Description
A symbolic link issue was found in rpm. It occurs when rpm sets the desired permissions and credentials after installing a file. A local unprivileged user could use this flaw to exchange the original file with a symbolic link to a security-critical file and escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
INFO
Published Date :
Aug. 25, 2022, 8:15 p.m.
Last Modified :
Nov. 29, 2022, 6:06 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
0.8
Public PoC/Exploit Available at Github
CVE-2021-35938 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2021-35938
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
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-2021-35938.
| URL | Resource |
|---|---|
| https://access.redhat.com/security/cve/CVE-2021-35938 | Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1964114 | Issue Tracking Vendor Advisory |
| https://bugzilla.suse.com/show_bug.cgi?id=1157880 | Exploit Issue Tracking Third Party Advisory |
| https://github.com/rpm-software-management/rpm/commit/25a435e90844ea98fe5eb7bef22c1aecf3a9c033 | Patch Third Party Advisory |
| https://github.com/rpm-software-management/rpm/pull/1919 | Patch Third Party Advisory |
| https://rpm.org/wiki/Releases/4.18.0 | Release Notes |
| https://security.gentoo.org/glsa/202210-22 | 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).
None
Python
Map Vulnerabilities into Different Layers of the Container Image
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-35938 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-35938 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 [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Nov. 29, 2022
Action Type Old Value New Value Removed CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://security.gentoo.org/glsa/202210-22 No Types Assigned https://security.gentoo.org/glsa/202210-22 Third Party Advisory -
CVE Modified by [email protected]
Oct. 31, 2022
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202210-22 [No Types Assigned] -
Initial Analysis by [email protected]
Aug. 31, 2022
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://access.redhat.com/security/cve/CVE-2021-35938 No Types Assigned https://access.redhat.com/security/cve/CVE-2021-35938 Vendor Advisory Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1964114 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1964114 Issue Tracking, Vendor Advisory Changed Reference Type https://bugzilla.suse.com/show_bug.cgi?id=1157880 No Types Assigned https://bugzilla.suse.com/show_bug.cgi?id=1157880 Exploit, Issue Tracking, Third Party Advisory Changed Reference Type https://github.com/rpm-software-management/rpm/commit/25a435e90844ea98fe5eb7bef22c1aecf3a9c033 No Types Assigned https://github.com/rpm-software-management/rpm/commit/25a435e90844ea98fe5eb7bef22c1aecf3a9c033 Patch, Third Party Advisory Changed Reference Type https://github.com/rpm-software-management/rpm/pull/1919 No Types Assigned https://github.com/rpm-software-management/rpm/pull/1919 Patch, Third Party Advisory Changed Reference Type https://rpm.org/wiki/Releases/4.18.0 No Types Assigned https://rpm.org/wiki/Releases/4.18.0 Release Notes Added CWE NIST CWE-59 Added CPE Configuration OR *cpe:2.3:a:rpm:rpm:*:*:*:*:*:*:*:* versions up to (excluding) 4.18.0 Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-35938 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-2021-35938
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.08 }} 0.02%
score
0.31002
percentile