OpenserverOperating system · Sco

CVE-1999-1450

HIGH · 7.5 CVSS v2.0 Published 1999-01-27
Fix available
A fix is available. Upgrade to after 7.0.1 or later.
See remediation →
84/100
Remediation priority · High
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
Vulnerability in (1) rlogin daemon rshd and (2) scheme on SCO UNIX OpenServer 5.0.5 and earlier, and SCO UnixWare 7.0.1 and earlier, allows remote attackers to gain privileges.

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 · moderate confidence

Remote code execution vulnerability in the rlogin daemon (rshd) and related scheme on SCO UNIX OpenServer 5.0.5 and earlier and UnixWare 7.0.1 and earlier allows remote attackers to gain elevated privileges via the network service.

MitigationDisable or remove the rlogin/rshd services immediately; migrate to secure alternatives like SSH; if these legacy SCO systems cannot be retired, isolate them behind a firewall with no external network access.

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
OpenserverOperating system
Affected:<= 5.0.5= 5.0= 5.0.2= 5.0.4
UnixwareOperating system
Affected:<= 2.1.3<= 7.0.1

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
Partial
Integrity
Partial
Availability
Partial

AV:N/AC:L/Au:N/C:P/I:P/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. Identify the SCO operating system version
    Run 'uname -a' or 'cat /etc/*release*' or check /var/adm/syslog to determine the exact SCO OpenServer or UnixWare version
    Affected if The system is running SCO OpenServer 5.0.5 or earlier, or UnixWare 7.0.1 or earlier
  2. Determine if rlogin/rshd services are installed
    Check for the presence of rlogind or rshd binaries: look in /usr/sbin/rlogind, /usr/sbin/rshd, or run 'ls -la /etc/inetd.conf' to see if these services are configured
    Affected if The rlogind or rshd binaries exist on the system and are configured in inetd.conf
  3. Verify if the rlogin service is currently active
    Check inetd configuration or running processes: 'ps -ef | grep rlogind' or 'ps -ef | grep rshd' or inspect /etc/inetd.conf for uncommented rlogin/rshd entries
    Affected if The rlogin or rshd daemon is running or enabled in inetd configuration
  4. Check network listening status for rlogin ports
    Run 'netstat -an | grep 513' or 'grep 513 /etc/services' to check if port 513 (rlogin) is listening
    Affected if Port 513 or the rlogin service is bound to a network interface

A user is affected if they run a vulnerable SCO OpenServer or UnixWare version AND have the rlogin/rshd service enabled and accessible on the network.

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
Upgrade available Upgrade to a release after 7.0.1
Interim mitigation

Disable or remove the rlogin/rshd services immediately; migrate to secure alternatives like SSH; if these legacy SCO systems cannot be retired, isolate them behind a firewall with no external network access.

Fix this in Openserver Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing3.0 h
  • Review / QA2.0 h
17.0 hours of engineering $3,050
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An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,880.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

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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-1999-1450 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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