CVE-2020-5941
First published: Thu Nov 05 2020(Updated: )
On BIG-IP versions 16.0.0-16.0.0.1 and 15.1.0-15.1.0.5, using the RESOLV::lookup command within an iRule may cause the Traffic Management Microkernel (TMM) to generate a core file and restart. This issue occurs when data exceeding the maximum limit of a hostname passes to the RESOLV::lookup command.
Credit: f5sirt@f5.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| F5 Access Policy Manager | >=15.1.0<15.1.1 | |
| F5 Access Policy Manager | >=16.0.0<16.0.1 | |
| F5 BIG-IP Advanced Firewall Manager | >=15.1.0<15.1.1 | |
| F5 BIG-IP Advanced Firewall Manager | >=16.0.0<16.0.1 | |
| F5 BIG-IP Analytics | >=15.1.0<15.1.1 | |
| F5 BIG-IP Analytics | >=16.0.0<16.0.1 | |
| F5 BIG-IP Application Acceleration Manager | >=15.1.0<15.1.1 | |
| F5 BIG-IP Application Acceleration Manager | >=16.0.0<16.0.1 | |
| F5 Application Security Manager | >=15.1.0<15.1.1 | |
| F5 Application Security Manager | >=16.0.0<16.0.1 | |
| F5 BIG-IP | >=15.1.0<15.1.1 | |
| F5 BIG-IP | >=16.0.0<16.0.1 | |
| F5 BIG-IP Fraud Protection Service | >=15.1.0<15.1.1 | |
| F5 BIG-IP Fraud Protection Service | >=16.0.0<16.0.1 | |
| Riverbed SteelApp Traffic Manager | >=15.1.0<15.1.1 | |
| Riverbed SteelApp Traffic Manager | >=16.0.0<16.0.1 | |
| F5 BIG-IP Link Controller | >=15.1.0<15.1.1 | |
| F5 BIG-IP Link Controller | >=16.0.0<16.0.1 | |
| Riverbed SteelApp Traffic Manager | >=15.1.0<15.1.1 | |
| Riverbed SteelApp Traffic Manager | >=16.0.0<16.0.1 | |
| F5 BIG-IP Policy Enforcement Manager | >=15.1.0<15.1.1 | |
| F5 BIG-IP Policy Enforcement Manager | >=16.0.0<16.0.1 |
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Reference Links
Frequently Asked Questions
What versions of F5 BIG-IP are affected by CVE-2020-5941?
F5 BIG-IP versions 16.0.0-16.0.0.1 and 15.1.0-15.1.0.5 are affected by CVE-2020-5941.
What is the impact of CVE-2020-5941?
CVE-2020-5941 may cause the Traffic Management Microkernel (TMM) to generate a core file and restart.
How can CVE-2020-5941 be mitigated?
To mitigate CVE-2020-5941, avoid using data exceeding the maximum limit of a hostname in the RESOLV::lookup command within an iRule.
Is a fix available for CVE-2020-5941?
Yes, a fix for CVE-2020-5941 can be found in the subsequent releases following the affected versions.
What command triggers the vulnerability in CVE-2020-5941?
The RESOLV::lookup command triggers the vulnerability in CVE-2020-5941 when used with excessive hostname data.
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/references
- agent/last-modified-date
- agent/author
- agent/first-publish-date
- agent/description
- 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/15.1.0
- version/f5 access policy manager/16.0.0
- canonical/f5 big-ip advanced firewall manager
- version/f5 big-ip advanced firewall manager/15.1.0
- version/f5 big-ip advanced firewall manager/16.0.0
- canonical/f5 big-ip analytics
- version/f5 big-ip analytics/15.1.0
- version/f5 big-ip analytics/16.0.0
- canonical/f5 big-ip application acceleration manager
- version/f5 big-ip application acceleration manager/15.1.0
- version/f5 big-ip application acceleration manager/16.0.0
- canonical/f5 application security manager
- version/f5 application security manager/15.1.0
- version/f5 application security manager/16.0.0
- canonical/f5 big-ip
- version/f5 big-ip/15.1.0
- version/f5 big-ip/16.0.0
- canonical/f5 big-ip fraud protection service
- version/f5 big-ip fraud protection service/15.1.0
- version/f5 big-ip fraud protection service/16.0.0
- canonical/riverbed steelapp traffic manager
- version/riverbed steelapp traffic manager/15.1.0
- version/riverbed steelapp traffic manager/16.0.0
- canonical/f5 big-ip link controller
- version/f5 big-ip link controller/15.1.0
- version/f5 big-ip link controller/16.0.0
- canonical/f5 big-ip policy enforcement manager
- version/f5 big-ip policy enforcement manager/15.1.0
- version/f5 big-ip policy enforcement manager/16.0.0