Vulnerability Description
On BIG-IP 14.1.0-14.1.2.3, undisclosed requests can lead to a denial of service (DoS) when sent to BIG-IP HTTP/2 virtual servers. The problem can occur when ciphers, which have been blacklisted by the HTTP/2 RFC, are used on backend servers. This is a data-plane issue. There is no control-plane exposure.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| F5 | Big-Ip Access Policy Manager | >= 14.1.0, <= 14.1.2.3 |
| F5 | Big-Ip Advanced Firewall Manager | >= 14.1.0, <= 14.1.2.3 |
| F5 | Big-Ip Analytics | >= 14.1.0, <= 14.1.2.3 |
| F5 | Big-Ip Application Acceleration Manager | >= 14.1.0, <= 14.1.2.3 |
| F5 | Big-Ip Application Security Manager | >= 14.1.0, <= 14.1.2.3 |
| F5 | Big-Ip Domain Name System | >= 14.1.0, <= 14.1.2.3 |
| F5 | Big-Ip Fraud Protection Service | >= 14.1.0, <= 14.1.2.3 |
| F5 | Big-Ip Global Traffic Manager | >= 14.1.0, <= 14.1.2.3 |
| F5 | Big-Ip Link Controller | >= 14.1.0, <= 14.1.2.3 |
| F5 | Big-Ip Local Traffic Manager | >= 14.1.0, <= 14.1.2.3 |
| F5 | Big-Ip Policy Enforcement Manager | >= 14.1.0, <= 14.1.2.3 |
References
- https://support.f5.com/csp/article/K43450419Vendor Advisory
- https://support.f5.com/csp/article/K43450419Vendor Advisory
FAQ
What is CVE-2020-5871?
CVE-2020-5871 is a vulnerability with a CVSS score of 7.5 (HIGH). On BIG-IP 14.1.0-14.1.2.3, undisclosed requests can lead to a denial of service (DoS) when sent to BIG-IP HTTP/2 virtual servers. The problem can occur when ciphers, which have been blacklisted by the...
How severe is CVE-2020-5871?
CVE-2020-5871 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-2020-5871?
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 Analytics, F5 Big-Ip Application Acceleration Manager, F5 Big-Ip Application Security Manager.