Security readout for executives and security teams
Plain-English summary
This is an old denial-of-service vulnerability in the OSF DCE security daemon on SGI IRIX 6.4 and earlier. An attacker can crash or disrupt the service by sending overly long principal, group, or organization values. Business urgency is mainly for organizations still running legacy IRIX/DCE systems.
Executive priority
Treat as a legacy-system exposure issue. It is not broadly urgent for modern infrastructure, but any remaining IRIX/DCE system should be isolated, reviewed, and scheduled for remediation or retirement because vendor support and fix information may be limited.
Technical view
CVE-1999-1131 describes a buffer overflow in the OSF Distributed Computing Environment security daemon, secd, on IRIX 6.4 and earlier. The documented impact is denial of service via long principal, group, or organization input. The source bundle does not provide CVSS, CWE, patch details, or evidence of code execution.
Likely exposure
Exposure is likely limited to legacy SGI IRIX environments using OSF DCE secd. Risk increases if the DCE security service is reachable from untrusted networks. Modern environments without IRIX/DCE are unlikely to be affected based on the provided sources.
Exploitation context
The CVE record and IBM X-Force reference describe denial of service through malformed overly long identity-related values. The source bundle does not indicate active exploitation, public exploit availability, or inclusion in CISA KEV.
Researcher notes
Available public data is sparse. The stated affected scope is IRIX 6.4 and earlier, with denial of service as the documented impact. No CVSS, CWE, patch identifier, exploit status, or active exploitation evidence is provided in the supplied sources.
Mitigation direction
- Identify any IRIX 6.4 or earlier systems running OSF DCE secd.
- Check SGI, IBM, or platform-maintainer guidance for historical fixes or workarounds.
- Restrict network access to DCE security services to trusted hosts only.
- Prioritize retirement or isolation of unsupported IRIX/DCE systems.
Validation and detection
- Inventory legacy UNIX assets for SGI IRIX 6.4 or earlier.
- Confirm whether OSF DCE secd is installed and running.
- Review network exposure of DCE-related services.
- Check logs for abnormal secd crashes or repeated malformed identity requests.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CVE-1999-1131 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- sgi-osf-dce-dos(1123)CVE reference · vdb-entry, x_refsource_XF
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.