Vulnerability Details : CVE-2016-20021
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.
Products affected by CVE-2016-20021
- cpe:2.3:a:gentoo:portage:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2016-20021
0.18%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 56 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-20021
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST | 2024-01-22 |
CWE ids for CVE-2016-20021
-
The product does not verify, or incorrectly verifies, the cryptographic signature for data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-20021
-
https://wiki.gentoo.org/wiki/Portage
Portage - Gentoo wikiProduct
-
https://gitweb.gentoo.org/proj/portage.git/tree/NEWS
NEWS - proj/portage.git - Package management systemRelease Notes
-
https://bugs.gentoo.org/597800
597800 – emerge-webrsync: Downloads .gpgsig by default, but doesn't verify it.Issue Tracking;Patch
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