Quantum Secular Labs / Blog / Advisories

CVE-2001-0168: Att Winvnc: Command injection

CVE-2001-0168 has a CVSS v2 base score of 10.0 (the maximum on that scale) and affects Att Winvnc. 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

Buffer overflow in AT&T WinVNC (Virtual Network Computing) server 3.3.3r7 and earlier allows remote attackers to execute arbitrary commands via a long HTTP GET request when the DebugLevel registry key is greater than 0.

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

• Att Winvnc: up to and including 3.3.3r7

References

• http://www.securityfocus.com/bid/2306
• http://www.kb.cert.org/vuls/id/598581
• http://marc.info/?l=vnc-list&m=98080763005455&w=2
• https://exchange.xforce.ibmcloud.com/vulnerabilities/6026