Security readout for executives and security teams
Plain-English summary
CVE-2001-1091 is an old NetBSD local privilege escalation issue. In NetBSD 1.4.x through 1.5.1, dump and dump_lfs may fail to drop privileges correctly, letting a local user potentially gain higher privileges through the RCMD_CMD environment variable.
Executive priority
Treat as a legacy-system risk. It is not Internet-routable by itself, but compromise of any local account could become higher-privilege access on affected NetBSD hosts.
Technical view
The vulnerable components are NetBSD dump and dump_lfs in versions 1.4.x through 1.5.1. The issue is improper privilege dropping while handling RCMD_CMD. Public data does not provide CVSS, CWE, a named patch, or detailed vendor remediation in the supplied sources.
Likely exposure
Exposure is most likely limited to legacy NetBSD systems running versions 1.4.x through 1.5.1 where local users can access dump or dump_lfs. Modern environments are unlikely to be affected unless old NetBSD hosts remain in service.
Exploitation context
The issue requires local user access. The supplied sources do not show active exploitation, and it is not listed as CISA KEV in the provided bundle. No exploit status should be assumed from these sources alone.
Researcher notes
Evidence is sparse and old. The CVE description identifies affected NetBSD versions and the RCMD_CMD environment variable, but supplied sources do not include CVSS, patch details, CWE mapping, or exploitation evidence.
Mitigation direction
- Identify any NetBSD 1.4.x through 1.5.1 systems.
- Check NetBSD vendor advisories or archives for official fixes.
- Upgrade affected legacy NetBSD systems where feasible.
- Restrict local shell access on affected systems pending remediation.
- Review use and permissions of dump and dump_lfs.
Validation and detection
- Inventory NetBSD versions across servers and appliances.
- Confirm whether dump and dump_lfs are installed.
- Review file permissions and privilege attributes for both commands.
- Check whether untrusted local users have access.
- Document remediation status for any affected legacy hosts.
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-2001-1091 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
- bsd-dump-tty-privileges(7037)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.