Security readout for executives and security teams
Plain-English summary
This is a denial-of-service risk in F5 BIG-IP. If a vulnerable BIG-IP virtual server uses an SSL OCSP authentication profile, certain undisclosed network requests can drive CPU usage up and reduce availability. The sources do not indicate data theft or system compromise.
Executive priority
Treat this as a high-priority availability issue for public-facing BIG-IP deployments using OCSP authentication. It is most urgent where BIG-IP protects critical customer, partner, or employee access paths.
Technical view
CVE-2023-22323 affects BIG-IP 17.0.x before 17.0.0.2, 16.1.x before 16.1.3.3, 15.1.x before 15.1.8.1, 14.1.x before 14.1.5.3, and all 13.1.x when OCSP authentication is configured on a virtual server. CVSS 7.5 reflects unauthenticated network availability impact only.
Likely exposure
Exposure is likely limited to organizations running affected BIG-IP versions with OCSP authentication profiles assigned to virtual servers, especially internet-facing services.
Exploitation context
The bundle does not show CISA KEV listing or any cited evidence of active exploitation. Attack details are intentionally undisclosed in the provided sources.
Researcher notes
This is CWE-770 resource allocation without limits. The impact is availability only under the supplied CVSS vector. Software past End of Technical Support was not evaluated, so unsupported versions may have uncertain status beyond the stated 13.1.x exposure.
Mitigation direction
- Upgrade BIG-IP 17.0.x to 17.0.0.2 or later.
- Upgrade BIG-IP 16.1.x to 16.1.3.3 or later.
- Upgrade BIG-IP 15.1.x to 15.1.8.1 or later.
- Upgrade BIG-IP 14.1.x to 14.1.5.3 or later.
- For 13.1.x, check F5 guidance and move to a supported fixed branch.
Validation and detection
- Inventory BIG-IP versions across production, staging, and disaster recovery environments.
- Identify virtual servers using SSL OCSP authentication profiles.
- Prioritize externally reachable virtual servers for remediation validation.
- Monitor BIG-IP CPU utilization for unexplained spikes until patched.
- Confirm upgraded devices report fixed or supported versions.
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-770: 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-2023-22323 mapping review
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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/K56412001CVE 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.
Allocation of Resources Without Limits or Throttling
Allocation of Resources Without Limits or Throttling represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.