Security readout for executives and security teams
Plain-English summary
This vulnerability can let a specially formed WebDAV-related request header crash an affected Apache HTTP Server process. The provided sources describe denial-of-service impact, not data theft or code execution. Exposure depends on running Apache HTTP Server 2.4.54 or earlier with mod_dav reachable.
Executive priority
Treat this as a targeted availability risk for affected Apache web servers, especially public systems using WebDAV. It does not have sourced evidence of active exploitation or code execution, but unsupported or exposed 2.4.54-and-earlier deployments should be updated through normal vulnerability remediation channels.
Technical view
In Apache HTTP Server mod_dav, a crafted If request header can trigger an out-of-bounds memory read or a single zero-byte write past the supplied header value in pool heap memory. The documented outcome is process crash. The issue is tracked as CWE-787 and affects Apache HTTP Server 2.4.54 and earlier.
Likely exposure
Most relevant to organizations running Apache HTTP Server 2.4.54 or earlier where mod_dav/WebDAV functionality is enabled or reachable by untrusted clients. Systems without mod_dav exposure appear less likely to be affected, based on the supplied title and description.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Public impact evidence is limited to crafted-request crash potential. No exploit maturity, CVSS score, or broader compromise impact is provided.
Researcher notes
Evidence is sparse: no CVSS vector, no KEV status, and no exploit-status confirmation in the bundle. The strongest technical signal is CWE-787 in mod_dav with a crash outcome from a crafted If header. Avoid assuming remote code execution without additional vendor evidence.
Mitigation direction
- Check Apache vendor guidance for the corrected httpd release path.
- Upgrade Apache HTTP Server beyond affected 2.4.54 builds where applicable.
- Apply distribution or appliance vendor updates, including Gentoo or NetApp guidance if relevant.
- Disable or restrict mod_dav/WebDAV exposure where it is not required.
- Prioritize externally reachable servers before internal-only systems.
Validation and detection
- Inventory Apache HTTP Server versions across internet-facing and internal assets.
- Confirm whether mod_dav or WebDAV endpoints are enabled and reachable.
- Review package source advisories for patched build status.
- Check logs for abnormal crashes around WebDAV or If-header traffic.
- Verify compensating access controls limit untrusted WebDAV requests.
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.
CWE-787: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2006-20001 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://httpd.apache.org/security/vulnerabilities_24.htmlCVE reference · vendor-advisory
- https://security.gentoo.org/glsa/202309-01CVE reference
- https://security.netapp.com/advisory/ntap-20230316-0005/CVE reference
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.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.