CVE-2020-5871
First published: Thu Apr 30 2020(Updated: )
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.
Credit: f5sirt@f5.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| F5 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 Application Security Manager | >=14.1.0<=14.1.2.3 | |
| F5 BIG-IP | >=14.1.0<=14.1.2.3 | |
| F5 BIG-IP Fraud Protection Service | >=14.1.0<=14.1.2.3 | |
| Riverbed SteelApp Traffic Manager | >=14.1.0<=14.1.2.3 | |
| F5 BIG-IP Link Controller | >=14.1.0<=14.1.2.3 | |
| Riverbed SteelApp Traffic Manager | >=14.1.0<=14.1.2.3 | |
| F5 BIG-IP Policy Enforcement Manager | >=14.1.0<=14.1.2.3 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2020-5871?
CVE-2020-5871 is a denial-of-service vulnerability that can impact the availability of BIG-IP HTTP/2 virtual servers.
How do I mitigate CVE-2020-5871?
To mitigate CVE-2020-5871, you should ensure that backend servers do not use ciphers that are blacklisted by the HTTP/2 RFC.
Which versions of F5 BIG-IP are affected by CVE-2020-5871?
CVE-2020-5871 affects F5 BIG-IP versions 14.1.0 through 14.1.2.3.
What type of issue is CVE-2020-5871 classified as?
CVE-2020-5871 is classified as a data-plane issue.
Is there a patch available for CVE-2020-5871?
Users should refer to F5's official channels for information on patches related to CVE-2020-5871.
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/references
- agent/author
- agent/severity
- agent/description
- agent/first-publish-date
- agent/event
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/f5
- canonical/f5 access policy manager
- version/f5 access policy manager/14.1.0
- version/f5 access policy manager/14.1.2.3
- canonical/f5 big-ip advanced firewall manager
- version/f5 big-ip advanced firewall manager/14.1.0
- version/f5 big-ip advanced firewall manager/14.1.2.3
- canonical/f5 big-ip analytics
- version/f5 big-ip analytics/14.1.0
- version/f5 big-ip analytics/14.1.2.3
- canonical/f5 big-ip application acceleration manager
- version/f5 big-ip application acceleration manager/14.1.0
- version/f5 big-ip application acceleration manager/14.1.2.3
- canonical/f5 application security manager
- version/f5 application security manager/14.1.0
- version/f5 application security manager/14.1.2.3
- canonical/f5 big-ip
- version/f5 big-ip/14.1.0
- version/f5 big-ip/14.1.2.3
- canonical/f5 big-ip fraud protection service
- version/f5 big-ip fraud protection service/14.1.0
- version/f5 big-ip fraud protection service/14.1.2.3
- canonical/riverbed steelapp traffic manager
- version/riverbed steelapp traffic manager/14.1.0
- version/riverbed steelapp traffic manager/14.1.2.3
- canonical/f5 big-ip link controller
- version/f5 big-ip link controller/14.1.0
- version/f5 big-ip link controller/14.1.2.3
- canonical/f5 big-ip policy enforcement manager
- version/f5 big-ip policy enforcement manager/14.1.0
- version/f5 big-ip policy enforcement manager/14.1.2.3