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CVE-2002-0736: Microsoft Backoffice: Authentication bypass

CVE-2002-0736 has a CVSS v2 base score of 10.0 (the maximum on that scale) and affects Microsoft Backoffice. 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

Microsoft BackOffice 4.0 and 4.5, when configured to be accessible by other systems, allows remote attackers to bypass authentication and access the administrative ASP pages via an HTTP request with an authorization type (auth_type) that is not blank.

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.

Affected products

• Microsoft Backoffice: 4.0; 4.5

References

• http://support.microsoft.com/support/kb/articles/q316/8/38.asp
• http://www.iss.net/security_center/static/8862.php
• http://www.securityfocus.com/bid/4528
• http://archives.neohapsis.com/archives/bugtraq/2002-04/0208.html