OpenCA up to 0.9.1.7 Certificate libCheckSignature improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

A vulnerability was found in OpenCA up to 0.9.1.7. It has been declared as critical. This vulnerability affects the function libCheckSignature in the library libCheckSignature of the component Certificate Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, and integrity. CVE summarizes:

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.

The bug was discovered 01/16/2004. The weakness was shared 01/16/2004 by Alexandru Matei and Michael Bell with OpenCA Team (Website). The advisory is shared for download at openca.org. This vulnerability was named CVE-2004-0004. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 14715 (OpenCA crypto-utils.lib libCheckSignature Function Signature Validation Weakness), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context r.

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at openca.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (14847) and Tenable (14715). Additional details are provided at securityfocus.com.

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 14715
Nessus Name: OpenCA crypto-utils.lib libCheckSignature Function Signature Validation Weakness
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 14715
OpenVAS Name: OpenCA signature verification flaw
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: openca.org

Timelineinfo

01/16/2004 🔍
01/16/2004 +0 days 🔍
01/16/2004 +0 days 🔍
01/16/2004 +0 days 🔍
01/20/2004 +4 days 🔍
01/20/2004 +0 days 🔍
01/20/2004 +0 days 🔍
01/20/2004 +0 days 🔍
02/17/2004 +27 days 🔍
09/13/2004 +209 days 🔍
09/20/2004 +7 days 🔍

Sourcesinfo

Advisory: openca.org
Researcher: Alexandru Matei, Michael Bell
Organization: OpenCA Team
Status: Not defined
Confirmation: 🔍

CVE: CVE-2004-0004 (🔍)
X-Force: 14847 - OpenCA improperly verifies certificate signatures, Medium Risk
Vulnerability Center: 5416 - OpenCA crypto-utils.lib libCheckSignature Function Enables Unauthorized User Access, High
SecuriTeam: securiteam.com
SecurityFocus: 9435 - OpenCA Crypto-Utils.Lib Signature Verification Vulnerability
Secunia: 10664 - OpenCA libCheckSignature Signature Validation Vulnerability, Moderately Critical
OSVDB: 3615 - OpenCA crypto-utils.lib libCheckSignature Function Signature Validation Weakness

Misc.: 🔍

Entryinfo

Created: 01/20/2004 10:54
Changes: 01/20/2004 10:54 (95)
Complete: 🔍

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