National Cyber-Alert System
Vulnerability Summary for CVE-2004-0004
Original release date:02/17/2004
Last revised:09/05/2008
Source:
US-CERT/NIST
Overview
The libCheckSignature function in crypto-utils.lib for OpenCA 0.9.1.6 and earlier only compares the serial of the signer's certificate and the one in the database, which can cause OpenCA to incorrectly accept a signature if the certificate's chain is trusted by OpenCA's chain directory, allowing remote attackers to spoof requests from other users.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
6.4
Exploitability Subscore:
10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type:Provides unauthorized access, Allows partial confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service
References to Advisories, Solutions, and Tools
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US-CERT Vulnerability Note: VU#336446
Name: VU#336446
External Source: BID
Name: 9435
Type: Advisory; Patch Information
External Source: CONFIRM
Name: http://www.openca.org/news/CAN-2004-0004.txt
Type: Advisory; Patch Information
External Source: XF
Name: openca-improper-signature-verification(14847)
External Source: OSVDB
Name: 3615
External Source: BUGTRAQ
Name: 20040116 [OpenCA Advisory] Vulnerability in signature verification
