Resource exhaustion in F5 Big-Ip
CVE-2023-40542
When TCP Verified Accept is enabled on a TCP profile that is configured on a Virtual Server, undisclosed requests can cause an increase in memory resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated
EPSS: 0.005 (42.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- F5 Big-ip — versions 17.1.0, 16.1.0, 15.1.0
- F5 Big-ip_access_policy_manager
- F5 Big-ip_advanced_firewall_manager
- F5 Big-ip_advanced_web_application_firewall
- F5 Big-ip_analytics
- F5 Big-ip_application_acceleration_manager
- F5 Big-ip_application_security_manager
- F5 Big-ip_application_visibility_and_reporting
- F5 Big-ip_carrier-grade_nat
- F5 Big-ip_ddos_hybrid_defender
Weakness classification (CWE)
Public proof-of-concept exploits
References
- f5sirt@f5.com (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-40542?
- CVE-2023-40542 is a high-severity vulnerability in F5 Big-Ip, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2023-10-10.
- How severe is CVE-2023-40542?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-40542 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.