Quantum Secular Labs / Blog / Advisories
CVE-2002-0491: Alguest: Authentication bypass
CVE-2002-0491 has a CVSS v2 base score of 10.0 (the maximum on that scale) and affects Alguest. 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
admin.php in AlGuest 1.0 guestbook checks for the existence of the admin cookie to authenticate the AlGuest administrator, which allows remote attackers to bypass the authentication and gain privileges by setting the admin cookie to an arbitrary value.
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
- Alguest: 1.0