Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
CVE-2016-20021 Details
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.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 9, 2025Exploitation: NoneAutomatable: YesTechnical Impact: Total
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://bugs.gentoo.org/597800 | CVE | Issue TrackingPatch |
| https://gitweb.gentoo.org/proj/portage.git/tree/NEWS | CVE | Release Notes |
| https://wiki.gentoo.org/wiki/Portage | CVE | Product |
| https://bugs.gentoo.org/597800 | [email protected] | Issue TrackingPatch |
| https://gitweb.gentoo.org/proj/portage.git/tree/NEWS | [email protected] | Release Notes |
| https://wiki.gentoo.org/wiki/Portage | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-347 | Improper Verification of Cryptographic Signature | [email protected] |
| CWE-347 | Improper Verification of Cryptographic Signature | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| gentoo portage | < 3.0.47 |
CPE
Remediation
| |
Change History
8 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 3, 2025 | CVE Modified | CISA-ADP |
| Nov 21, 2024 | CVE Modified | CVE |
| May 14, 2024 | CVE Modified | [email protected] |
| Jan 22, 2024 | Initial Analysis | [email protected] |
| Jan 17, 2024 | CVE Modified | [email protected] |
| Jan 12, 2024 | New CVE Received | [email protected] |