Quantum Secular Labs / Blog / Advisories

CVE-2000-0306: Sco Openserver: Buffer overflow

CVE-2000-0306 has a CVSS v2 base score of 10.0 (the maximum on that scale) and affects Sco Openserver. 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 calserver in SCO OpenServer allows remote attackers to gain root access via a long message.

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

  • Sco Openserver: up to and including 5.04

References