Vulnerability Description
On BIG-IP version 16.0.x before 16.0.1.1 and 15.1.x before 15.1.3, malformed HTTP/2 requests may cause an infinite loop which causes a Denial of Service for Data Plane traffic. TMM takes the configured HA action when the TMM process is aborted. There is no control plane exposure, this is a data plane issue only. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| F5 | Big-Ip Access Policy Manager | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Advanced Firewall Manager | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Advanced Web Application Firewall | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Analytics | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Application Acceleration Manager | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Application Security Manager | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Ddos Hybrid Defender | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Domain Name System | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Fraud Protection Service | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Global Traffic Manager | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Link Controller | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Local Traffic Manager | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Policy Enforcement Manager | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Ssl Orchestrator | >= 15.1.0, < 15.1.3 |
Related Weaknesses (CWE)
References
- https://support.f5.com/csp/article/K90603426Vendor Advisory
- https://support.f5.com/csp/article/K90603426Vendor Advisory
FAQ
What is CVE-2021-23009?
CVE-2021-23009 is a vulnerability with a CVSS score of 7.5 (HIGH). On BIG-IP version 16.0.x before 16.0.1.1 and 15.1.x before 15.1.3, malformed HTTP/2 requests may cause an infinite loop which causes a Denial of Service for Data Plane traffic. TMM takes the configure...
How severe is CVE-2021-23009?
CVE-2021-23009 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-23009?
Check the references section above for vendor advisories and patch information. Affected products include: 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.