CVE-2021-23000
High
Description
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 instances, a specific sequence of malicious requests may cause TMM to restart. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.
SeverityHigh
CVSS7.5
Exploit probability—
Product
F5 Big-ip Access Policy Manager
PublishedMar 31, 2021
First seenMar 31, 2021
How to fix
Update
- f5 big-ip_access_policy_manager13.1.3.6 or later
- f5 big-ip_advanced_firewall_manager13.1.3.6 or later
- f5 big-ip_advanced_web_application_firewall13.1.3.6 or later
- f5 big-ip_analytics13.1.3.6 or later
- f5 big-ip_application_acceleration_manager13.1.3.6 or later
- f5 big-ip_application_security_manager13.1.3.6 or later
- f5 big-ip_ddos_hybrid_defender13.1.3.6 or later
- f5 big-ip_domain_name_system13.1.3.6 or later
- f5 big-ip_fraud_protection_service13.1.3.6 or later
- f5 big-ip_global_traffic_manager13.1.3.6 or later
- f5 big-ip_link_controller13.1.3.6 or later
- f5 big-ip_local_traffic_manager13.1.3.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| f5 big-ip_access_policy_manager | 13.1.3.4 ≤ v < 13.1.3.6, 12.1.5.2 | 13.1.3.6 |
| f5 big-ip_advanced_firewall_manager | 13.1.3.4 ≤ v < 13.1.3.6, 12.1.5.2 | 13.1.3.6 |
| f5 big-ip_advanced_web_application_firewall | 13.1.3.4 ≤ v < 13.1.3.6, 12.1.5.2 | 13.1.3.6 |
| f5 big-ip_analytics | 13.1.3.4 ≤ v < 13.1.3.6, 12.1.5.2 | 13.1.3.6 |
| f5 big-ip_application_acceleration_manager | 13.1.3.4 ≤ v < 13.1.3.6, 12.1.5.2 | 13.1.3.6 |
| f5 big-ip_application_security_manager | 13.1.3.4 ≤ v < 13.1.3.6, 12.1.5.2 | 13.1.3.6 |
| f5 big-ip_ddos_hybrid_defender | 13.1.3.4 ≤ v < 13.1.3.6, 12.1.5.2 | 13.1.3.6 |
| f5 big-ip_domain_name_system | 13.1.3.4 ≤ v < 13.1.3.6, 12.1.5.2 | 13.1.3.6 |
| f5 big-ip_fraud_protection_service | 13.1.3.4 ≤ v < 13.1.3.6, 12.1.5.2 | 13.1.3.6 |
| f5 big-ip_global_traffic_manager | 13.1.3.4 ≤ v < 13.1.3.6, 12.1.5.2 | 13.1.3.6 |
| f5 big-ip_link_controller | 13.1.3.4 ≤ v < 13.1.3.6, 12.1.5.2 | 13.1.3.6 |
| f5 big-ip_local_traffic_manager | 13.1.3.4 ≤ v < 13.1.3.6, 12.1.5.2 | 13.1.3.6 |
| f5 big-ip_policy_enforcement_manager | 13.1.3.4 ≤ v < 13.1.3.6, 12.1.5.2 | 13.1.3.6 |
| f5 ssl_orchestrator | 13.1.3.4 ≤ v < 13.1.3.6, 12.1.5.2 | 13.1.3.6 |
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