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CVE-2005-3656: Guiseppe Tanzilli And Matthias Eckermann Mod Auth Pgsql: Authentication bypass

CVE-2005-3656 has a CVSS v2 base score of 10.0 (the maximum on that scale) and affects Guiseppe Tanzilli And Matthias Eckermann Mod Auth Pgsql. Per its scoring, it can be exploited over the network, without authentication. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

Multiple format string vulnerabilities in logging functions in mod_auth_pgsql before 2.0.3, when used for user authentication against a PostgreSQL database, allows remote unauthenticated attackers to execute arbitrary code, as demonstrated via the username.

Severity breakdown

CVSS v2.0 10.0: AV:N/AC:L/Au:N/C:C/I:C/A:C

Access vector: Network. Exploitable remotely over the network.
Access complexity: Low. No special conditions are required.
Authentication: None. No authentication is needed.
Confidentiality impact: Complete. Total information disclosure.
Integrity impact: Complete. Total loss of integrity.
Availability impact: Complete. Total shutdown of the component.

Underlying weakness

CWE-134: Use of Externally-Controlled Format String

The product uses a function that accepts a format string as an argument, but the format string originates from an external source.

Affected products

Guiseppe Tanzilli And Matthias Eckermann Mod Auth Pgsql: up to and including 2.0.3; 0.9.5; 0.9.6