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

Published n/a Updated 2026-08-21T04:30:54.221Z

Summary

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

UNKNOWN

Source Attribution

Source: NVD · Updated: 2026-08-21T04:30:54.221Z · Confidence: high

Impact

Based on CVSS vector: n/a — assess confidentiality, integrity, and availability impact via the official vector documentation.

Affected Software

Fix

Upgrade affected software to the fixed version identified above. Apply vendor patches and monitor advisories before exposed systems go unpatched.

References