CVE-2016-20021
Gentoo Portage GPG Validation Weakness
Description
In Gentoo Portage before 3.0.47, there is missing PGP validation of executed code: the standalone emerge-webrsync downloads a .gpgsig file but does not perform signature verification. Unless emerge-webrsync is used, Portage is not vulnerable.
INFO
Published Date :
Jan. 12, 2024, 3:15 a.m.
Last Modified :
Jan. 22, 2024, 4:27 p.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-2016-20021.
| URL | Resource |
|---|---|
| https://bugs.gentoo.org/597800 | Issue Tracking Patch |
| https://gitweb.gentoo.org/proj/portage.git/tree/NEWS | Release Notes |
| https://wiki.gentoo.org/wiki/Portage | Product |
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-2016-20021 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2016-20021 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 -
Initial Analysis by [email protected]
Jan. 22, 2024
Action Type Old Value New Value 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.gentoo.org/597800 No Types Assigned https://bugs.gentoo.org/597800 Issue Tracking, Patch Changed Reference Type https://gitweb.gentoo.org/proj/portage.git/tree/NEWS No Types Assigned https://gitweb.gentoo.org/proj/portage.git/tree/NEWS Release Notes Changed Reference Type https://wiki.gentoo.org/wiki/Portage No Types Assigned https://wiki.gentoo.org/wiki/Portage Product Added CWE NIST CWE-347 Added CPE Configuration OR *cpe:2.3:a:gentoo:portage:*:*:*:*:*:*:*:* versions up to (excluding) 3.0.47 -
CVE Modified by [email protected]
Jan. 17, 2024
Action Type Old Value New Value Changed Description In Gentoo Portage before 3.0.47, there is missing PGP validation of executed code: the standalone emerge-webrsync downloads a .gpgsig file but does not perform signature verification. In Gentoo Portage before 3.0.47, there is missing PGP validation of executed code: the standalone emerge-webrsync downloads a .gpgsig file but does not perform signature verification. Unless emerge-webrsync is used, Portage is not vulnerable. -
CVE Received by [email protected]
Jan. 12, 2024
Action Type Old Value New Value Added Description In Gentoo Portage before 3.0.47, there is missing PGP validation of executed code: the standalone emerge-webrsync downloads a .gpgsig file but does not perform signature verification. Added Reference MITRE https://wiki.gentoo.org/wiki/Portage [No types assigned] Added Reference MITRE https://gitweb.gentoo.org/proj/portage.git/tree/NEWS [No types assigned] Added Reference MITRE https://bugs.gentoo.org/597800 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2016-20021 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-2016-20021
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.02%
score
0.25488
percentile