Quantum Secular Labs / Blog / Advisories

CVE-2000-0833: Jack De Winter Winsmtp: Buffer overflow

CVE-2000-0833 has a CVSS v2 base score of 10.0 (the maximum on that scale) and affects Jack De Winter Winsmtp. 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 WinSMTP 1.06f and 2.X allows remote attackers to cause a denial of service via a long (1) USER or (2) HELO command.

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

  • Jack De Winter Winsmtp: 1.6f; 2.x

References