Vulnerability in F5 Big-ip_access_policy_manager
CVE-2021-23000
On BIG-IP versions 13.1.3.4-13.1.3.6 and 12.1.5.2, if the tmm.http.rfc.enforcement BigDB key is enabled in a BIG-IP system, or the Bad host header value is checked in the AFM HTTP security profile associated with a virtual server, in rare…
EPSS: 0.009 (56.8th 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_access_policy_manager — versions 12.1.5.2
- F5 Big-ip_advanced_firewall_manager — versions 12.1.5.2
- F5 Big-ip_advanced_web_application_firewall — versions 12.1.5.2
- F5 Big-ip_analytics — versions 12.1.5.2
- F5 Big-ip_application_acceleration_manager — versions 12.1.5.2
- F5 Big-ip_application_security_manager — versions 12.1.5.2
- F5 Big-ip_ddos_hybrid_defender — versions 12.1.5.2
- F5 Big-ip_domain_name_system — versions 12.1.5.2
- F5 Big-ip_fraud_protection_service — versions 12.1.5.2
- F5 Big-ip_global_traffic_manager — versions 12.1.5.2
Public proof-of-concept exploits
References
- f5sirt@f5.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-23000?
- CVE-2021-23000 is a high-severity vulnerability in F5 Big-ip_access_policy_manager. CVSS score: 7.5/10. Published 2021-03-31.
- How severe is CVE-2021-23000?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-23000 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.