// For flags

CVE-2016-20021

Gentoo Linux Security Advisory 202409-01

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

En Gentoo Portage anterior a 3.0.47, falta la validación PGP del código ejecutado: el emerge-webrsync independiente descarga un archivo .gpgsig pero no realiza la verificación de firma.

A vulnerability has been discovered in Portage, where PGP signatures would not be verified. Versions greater than or equal to 3.0.47 are affected.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2024-01-12 CVE Reserved
  • 2024-01-12 CVE Published
  • 2024-08-06 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-347: Improper Verification of Cryptographic Signature
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Gentoo
Search vendor "Gentoo"
 Portage
Search vendor "Gentoo" for product "Portage"
 < 3.0.47
Search vendor "Gentoo" for product "Portage" and version " < 3.0.47"
-
Affected