dbcve.org
OpenlinuxOperating system · Caldera

CVE-2000-0369

MEDIUM · 5.0 CVSS v2.0 Published 1999-10-08
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
59/100
Remediation priority · Elevated
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
The IDENT server in Caldera Linux 2.3 creates multiple threads for each IDENT request, which allows remote attackers to cause a denial of service.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

The IDENT server (identd) in Caldera Linux 2.3 creates multiple threads for each incoming IDENT request. This allows remote attackers to cause a denial of service by sending multiple IDENT requests, potentially exhausting system resources through excessive thread creation.

MitigationDisable the IDENT server if not required, or obtain and apply the appropriate Caldera security patch for the identd service.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
OpenlinuxOperating system
Affected:= 2.3

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial

AV:N/AC:L/Au:N/C:N/I:N/A:P

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Check the operating system version
    Run 'cat /etc/issue' or 'cat /etc/caldera-release' to identify the installed OS version
    Affected if The system is not Caldera OpenLinux 2.3, the vulnerability does not apply
  2. Verify if identd is installed
    Check for the presence of identd or in.identd binary: run 'which identd' or 'ls -la /usr/sbin/in.identd' or check RPM packages with 'rpm -qa | grep -i ident'
    Affected if identd is not installed, the vulnerability does not apply
  3. Check if identd service is running
    Run 'ps aux | grep -i identd' or check running services with 'netstat -an | grep 113' (port 113 is the IDENT port)
    Affected if identd is not running, the vulnerability cannot be exploited
  4. Verify identd configuration and threading behavior
    Examine the identd startup script in /etc/rc.d/init.d/ or check /etc/inetd.conf if run via inetd, looking for how the service handles multiple requests
    Affected if identd is configured to spawn multiple threads per request without resource limits, the system is vulnerable

The system is affected only if it runs Caldera OpenLinux 2.3 AND has the identd service installed and enabled, creating multiple threads per request.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Disable the IDENT server if not required, or obtain and apply the appropriate Caldera security patch for the identd service.

Fix this in Openlinux Scoped from the published advisory
  • Consultation2.0 h
  • Implementation1.0 h
  • Testing1.0 h
  • Review / QA1.0 h
5.0 hours of engineering $910
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2000-0369 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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  • No spam, self-promotion, credentials, or personal data