Security readout for executives and security teams
Plain-English summary
This CVE describes an authentication bypass in mod_nss 1.0.8. A remote party with another user's certificate could be treated as that user if the vulnerable authentication flow accepted a fixed password value. For affected legacy services, this undermines certificate-based identity controls.
Executive priority
Prioritize if certificate-based authentication protects sensitive applications or administrative access. The vulnerability is old, but successful abuse would directly compromise trust in user identity.
Technical view
The provided CVE record identifies mod_nss 1.0.8 as vulnerable to authentication bypass. The issue concerns certificate-based authentication and password handling, allowing identity assumption under the described conditions. The bundle does not provide CVSS, CWE, affected CPEs, or a named fixed version.
Likely exposure
Exposure is most likely in legacy Apache deployments using mod_nss 1.0.8 for client-certificate authentication. The source bundle does not identify broader affected products or package ranges.
Exploitation context
The CVE describes remote abuse, but the provided sources do not show active exploitation, public weaponization, or KEV listing. Treat exploit status as unconfirmed from this bundle.
Researcher notes
Evidence is sparse. The core behavior and version come from the CVE description and linked Red Hat references, but severity scoring, complete affected ranges, and remediation details are absent from the bundle.
Mitigation direction
- Inventory systems using mod_nss, especially version 1.0.8.
- Check Red Hat and mod_nss vendor guidance for fixed versions or mitigations.
- Retire or isolate legacy services that depend on vulnerable mod_nss authentication.
- Review certificate-authenticated applications for compensating access controls.
Validation and detection
- Confirm whether Apache hosts load mod_nss.
- Identify installed mod_nss package versions on relevant systems.
- Review authentication configuration for client-certificate login paths.
- Check logs for unusual certificate-authenticated account access.
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.
Credential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2011-4973 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=1017197CVE reference · x_refsource_CONFIRM
- [Mod_nss-list] 20110504 Problem 2CVE reference · mailing-list, x_refsource_MLIST
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.