CVE-2016-20021
Gentoo Portage missing PGP validation of executed code
9.8
CRITICAL
CVSS 3.1
EPSS 0.04%
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.
How to fix CVE-2016-20021
To remediate CVE-2016-20021, upgrade the affected package to a fixed version below.
- —upgrade to 3.0.47 or later
- —upgrade to 3.0.47 or later
Is CVE-2016-20021 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 3.0.47
- from 0, < 3.0.47
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U |
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |