CVE-2020-28942

Published: Nov 19, 2020 Last Modified: Nov 21, 2024 EU-VD ID: EUVD-2020-21330 Aliases: GSD-2020-28942
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 4,3
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: low
Availability: none
MEDIUM 4,0
Source: [email protected]
Access Vector: network
Access Complexity: low
Authentication: single
Confidentiality: none
Integrity: partial
Availability: none

Description

AI Translation Available

An issue exists in PrimeKey EJBCA before 7.4.3 when enrolling with EST while proxied through an RA over the Peers protocol. As a part of EJBCA's domain security model, the peer connector allows the restriction of client certificates (for the RA, not the end user) to a limited set of allowed CAs, thus restricting the accessibility of that RA to the rights it has within a specific role. While this works for other protocols such as CMP, it was found that the EJBCA enrollment over an EST implementation bypasses this check, allowing enrollment with a valid client certificate through any functioning and authenticated RA connected to the CA. NOTE: an attacker must already have a trusted client certificate and authorization to enroll against the targeted CA.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0010
Percentile
0,3th
Updated

EPSS Score Trend (Last 91 Days)

295

Improper Certificate Validation

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Authentication
Potential Impacts:
Bypass Protection Mechanism Gain Privileges Or Assume Identity
Applicable Platforms
Technologies: Mobile, Not Technology-Specific, Web Based
View CWE Details
Application

Ejbca by Primekey

Product Information
Vendor Primekey
Product Ejbca
Version Range Affected
To 7.4.3 (exclusive)
cpe:2.3:a:primekey:ejbca:*:*:*:*:enterprise:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://support.primekey.com/news/posts/40
Vendor Advisory
https://support.primekey.com/news/posts/40
https://support.primekey.com/news/posts/40
Vendor Advisory
https://support.primekey.com/news/posts/40