Security readout for executives and security teams
A very old flaw in AIX and Solaris let a corrupt DNS host name overflow a buffer in the gethostbyname library call, potentially giving an attacker root access. The issue dates to the late 1990s and would only matter today if a business still runs unpatched, decades-old Unix systems in production. Exposure is confined to end-of-life AIX and Solaris hosts from the late 1990s that never received vendor patches and still perform name resolution against untrusted DNS. Modern, supported Unix and Linux systems are not affected. Any residual exposure would sit inside legacy appliances, industrial systems, or archived Unix workloads. Low priority for most modern estates. Only relevant if the business still operates unsupported AIX or Solaris systems, in which case the priority is lifecycle replacement rather than emergency patching. Treat as a housekeeping and legacy-risk item, not an active incident driver. Mitigation focus: Inventory any remaining AIX or Solaris hosts and confirm vendor patch state against the original 1990s advisories.; Retire or isolate unsupported legacy Unix systems that cannot receive modern security updates.; Restrict legacy hosts to trusted internal DNS resolvers and block untrusted upstream DNS traffic..
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
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CVE-1999-0101 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
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CVSS and timeline data
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Source materials
- CVE List V5 sourceCVE List V5
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CWE details
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