Security readout for executives and security teams
Plain-English summary
This is an old local privilege-escalation issue in the SCO su program. A user who already has local access could potentially become root by triggering a buffer overflow. It is most urgent for organizations still running legacy SCO systems with local or shared user access.
Executive priority
Treat this as high priority only if SCO systems remain in use. The business risk is root compromise of legacy hosts, but urgency depends on whether local users or compromised accounts can reach those systems.
Technical view
CVE-1999-0845 describes a buffer overflow in SCO su involving an overly long username, allowing local users to gain root access. The provided sources do not identify exact SCO versions, CVSS score, CWE mapping, patch identifiers, or confirmed active exploitation.
Likely exposure
Exposure is likely limited to legacy SCO environments. The source bundle lists affected vendor and product as n/a, so exact release exposure is not established. Systems with local users, shared administrative hosts, or compromised low-privilege accounts would carry the greatest practical risk.
Exploitation context
The source bundle does not show CISA KEV listing or any cited evidence of active exploitation. The vulnerability requires local user access, so the main scenario is privilege escalation after insider access or compromise of a non-root account.
Researcher notes
Evidence is sparse. The public record establishes a local root buffer overflow in SCO su, but not affected versions, exploit maturity, or remediation details. Avoid broad product assumptions beyond SCO su unless additional vendor records confirm them.
Mitigation direction
- Identify any SCO systems that expose local shell access or untrusted user accounts.
- Check SCO or current maintainer guidance for patches or supported upgrade paths.
- Restrict interactive logins to trusted administrators until status is confirmed.
- Retire, isolate, or network-segment unsupported SCO hosts.
- Increase monitoring for privilege changes and suspicious su activity.
Validation and detection
- Inventory SCO hosts and determine whether the su program is present.
- Confirm operating system release and su package provenance against vendor guidance.
- Review local account lists for unnecessary or stale users.
- Check logs for unexpected su usage or root session creation.
- Document whether the system is patched, isolated, retired, or still exposed.
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-1999-0845 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
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
- https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0845CVE reference · x_refsource_MISC
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.