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CVE-2016-20021

Published: Jan 12, 2024Updated: Jun 3, 2025 Sources: CVE List NVD GHSACWE-347
9.8CRITICAL
NVD MITRE
EPSS Score
0.5%
Top 63.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-347

Affected Products

gentoo
oss-project·USaka gentoo linux
portageOn-prem
Operating Systems / linux-distro
PyPI
package-ecosystem
portage
OSS Libraries
and 1 more affected products View all →

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Collection
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References

https://wiki.gentoo.org/wiki/Portage
wiki.gentoo.org
https://gitweb.gentoo.org/proj/portage.git/tree/NEWS
gitweb.gentoo.org
https://bugs.gentoo.org/597800
bugs.gentoo.org
and 5 more references View all →
News mentions
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