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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	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
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

Configurations

Configuration 1 (hide)

cpe:2.3:a:gentoo:portage:*:*:*:*:*:*:*:*

History

21 Nov 2024, 02:47

Type	Values Removed	Values Added
References	~~() https://bugs.gentoo.org/597800 - Issue Tracking, Patch~~	() https://bugs.gentoo.org/597800 - Issue Tracking, Patch
References	~~() https://gitweb.gentoo.org/proj/portage.git/tree/NEWS - Release Notes~~	() https://gitweb.gentoo.org/proj/portage.git/tree/NEWS - Release Notes
References	~~() https://wiki.gentoo.org/wiki/Portage - Product~~	() https://wiki.gentoo.org/wiki/Portage - Product

22 Jan 2024, 16:27

Type	Values Removed	Values Added
New CVE

Information

Published : 2024-01-12 03:15

Updated : 2025-06-03 14:15

NVD link : CVE-2016-20021

Mitre link : CVE-2016-20021

CVE.ORG link : CVE-2016-20021

JSON object : View

Products Affected

gentoo

portage

CWE

CWE-347

Improper Verification of Cryptographic Signature

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