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CVE-2000-1221: The line printer daemon (lpd) in the lpr package in multiple Linux operating systems authenticates by…

CVE-2000-1221 has a CVSS v2 base score of 10.0 (the maximum on that scale) and affects Red Hat Linux, along with 2 other products in NVD’s configuration data. 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

The line printer daemon (lpd) in the lpr package in multiple Linux operating systems authenticates by comparing the reverse-resolved hostname of the local machine to the hostname of the print server as returned by gethostname, which allows remote attackers to bypass intended access controls by modifying the DNS for the attacking IP.

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

  • Red Hat Linux: 4.1; 4.2; 5.0; 5.2; 6.0; 6.1
  • Sgi Irix: 6.5; 6.5.1; 6.5.2; 6.5.3; 6.5.4; 6.5.5; 6.5.6; 6.5.7; 6.5.8; 6.5.9; 6.5.10; 6.5.11
  • Debian Linux: 2.1

References