Security readout for executives and security teams
Plain-English summary
This vulnerability can crash a core BIG-IP traffic process when a specific APM OAuth configuration is exposed on an HTTPS virtual server. The reported impact is service availability, not data theft or privilege escalation. It matters most for organizations using affected BIG-IP APM versions in front of important applications.
Executive priority
Prioritize remediation for externally exposed BIG-IP APM deployments protecting critical applications. The main business risk is service disruption from TMM termination, so urgency depends on exposure and application importance.
Technical view
CVE-2023-22341 is a CWE-476 null pointer dereference in F5 BIG-IP APM. On affected 14.1.x before 14.1.5.3 and 13.1.x, undisclosed network requests can terminate TMM when OAuth Server, OAuth Provider, OAuth profile Authorization Endpoint '/', and an HTTPS virtual server access profile are combined.
Likely exposure
Exposure is limited to F5 BIG-IP APM systems running affected versions with the exact OAuth/APM configuration described by F5. Internet-facing HTTPS virtual servers using that access profile would carry the highest availability risk.
Exploitation context
The CVSS vector indicates unauthenticated network reachability, low complexity, no user interaction, and availability-only impact. The source bundle does not report active exploitation, and the CVE is not listed as KEV.
Researcher notes
Evidence supports a configuration-dependent availability vulnerability, not confidentiality or integrity compromise. The request content is described only as undisclosed, so validation should focus on version, APM OAuth configuration, virtual server association, and operational telemetry rather than offensive reproduction.
Mitigation direction
- Check F5 advisory K20717585 for current fixed versions and operational guidance.
- Upgrade BIG-IP 14.1.x to 14.1.5.3 or later where applicable.
- For 13.1.x, follow F5 guidance because the bundle lists all 13.1.x versions affected.
- Review and change the risky OAuth/APM configuration only under approved change control.
- Restrict exposure of affected HTTPS virtual servers if remediation is delayed.
Validation and detection
- Inventory BIG-IP APM devices and confirm software branch and build.
- Identify OAuth Servers that reference OAuth Providers.
- Find OAuth profiles with Authorization Endpoint set to '/'.
- Confirm whether those OAuth profiles are referenced by access profiles on HTTPS virtual servers.
- Review TMM logs for unexplained termination or restart events.
- After remediation, recheck version and configuration state against F5 guidance.
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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CWE-476: Exact CWE lookup
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Open ATT&CK lookupCVE-2023-22341 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
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://my.f5.com/manage/s/article/K20717585CVE 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.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.