Security readout for executives and security teams
A flaw in two Linux authentication add-ons (pam_smb and pam_ntdom) let anyone on the network take full control of a vulnerable server just by trying to log in with an unusually long username. Vendors including Debian, SUSE, Conectiva, and Mandrake shipped fixes in September 2000. Any modern Linux system will already have this addressed, but legacy hosts still running unpatched builds remain at risk. Exposure is limited to legacy Linux/Unix hosts using pam_smb or pam_ntdom to authenticate against SMB/NT domain controllers. Modern distributions replaced or patched these modules over two decades ago, so exposure today is largely limited to unmaintained or archaeological systems still running 2000-era Linux builds with network-reachable authentication services. Low operational priority for modern estates because supported distributions have long since patched. High priority only if legacy Unix/Linux systems still authenticate to Windows domains via these modules; in that case treat as urgent remediation or decommission candidate. Mitigation focus: Apply distribution updates from Debian, SUSE, Conectiva, or Mandrake advisories released September 2000.; Upgrade any legacy hosts still using pam_smb/pam_ntdom to a currently supported PAM stack or authentication method.; If patching is impossible, restrict network access to authentication services until the modules are replaced..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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CVE-2000-0843 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
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- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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Source materials
- CVE List V5 sourceCVE List V5
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CWE details
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