Security readout for executives and security teams
Plain-English summary
This issue affects Red Hat Enterprise Linux 3 NFS clients using the noacl mount option. A local process may receive a successful open result even when the NFS server would deny access, potentially revealing permission information. The CVE notes uncertainty about whether this crosses privilege boundaries.
Executive priority
Treat as a legacy-system exposure check, not an emergency from the provided evidence. Prioritize if RHEL 3 NFS clients remain in sensitive environments or support regulated data access.
Technical view
The RHEL 3 kernel NFS client checks open permissions with local VFS mode-bit data instead of an NFS ACCESS request when noacl is used. In root_squash-like environments, client-side open decisions may disagree with server enforcement, creating false success states and possible permission metadata exposure.
Likely exposure
Exposure appears limited to legacy RHEL 3 systems acting as NFS clients with filesystems mounted using noacl. The bundle does not identify other products, versions, or CPEs.
Exploitation context
The bundle does not report active exploitation, KEV listing, public exploit code, or remote attackability. The described actor is a local client process, and privilege-boundary impact is explicitly uncertain.
Researcher notes
The key uncertainty is impact. The CVE states false open success and possible permission-information disclosure, but also notes uncertainty about privilege-boundary crossing. No CVSS, CWE, patch details, or affected CPEs are provided in the bundle.
Mitigation direction
- Inventory RHEL 3 systems that mount NFS filesystems.
- Review NFS mounts for the noacl option.
- Check Red Hat Bugzilla and vendor guidance for fixes or supported workarounds.
- Restrict local access to affected NFS client systems where practical.
- Avoid relying on affected clients for sensitive permission validation until assessed.
Validation and detection
- Confirm whether any RHEL 3 hosts still operate as NFS clients.
- Inspect NFS mount configurations for noacl usage.
- Identify root_squash or similar server-side permission environments.
- Compare client open behavior with expected server-side NFS access decisions.
- Document whether any sensitive permission information could be 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
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CVE-2007-0004 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://bugzilla.redhat.com/show_bug.cgi?id=199715CVE reference · x_refsource_CONFIRM
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.