Quantum Secular Labs / Blog / Advisories

CVE-2002-0702: Isc Dhcpd: Remote code execution

CVE-2002-0702 has a CVSS v2 base score of 10.0 (the maximum on that scale) and affects Isc Dhcpd. 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

Format string vulnerabilities in the logging routines for dynamic DNS code (print.c) of ISC DHCP daemon (DHCPD) 3 to 3.0.1rc8, with the NSUPDATE option enabled, allow remote malicious DNS servers to execute arbitrary code via format strings in a DNS server response.

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

  • Isc Dhcpd: 3.0; 3.0.1 rc1; 3.0.1 rc2; 3.0.1 rc3; 3.0.1 rc4; 3.0.1 rc5; 3.0.1 rc6; 3.0.1 rc7; 3.0.1 rc8

References