K53821711: TMM vulnerability CVE-2020-5946
Original Publication Date: Nov 03, 2020
Security Advisory Description
When processing Capabilities-Exchange-Answer (CEA) packets with certain attributes from the Policy and Charging Rules Function (PCRF) server, the Traffic Management Microkernel (TMM) may generate a core file and restart.(CVE-2020-5946)
Impact
A remote attacker may be able to perform a denial-of-service (DoS) attack on a BIG-IP system by causing the TMM process to restart.
Security Advisory Status
F5 Product Development has assigned ID 879745 (BIG-IP) to this vulnerability.
To determine if your product and version have been evaluated for this vulnerability, refer to the (Applies to (see versions) box. To determine if your release is known to be vulnerable, the components or features that are affected by the vulnerability, and for information about releases, point releases, or hotfixes that address the vulnerability, refer to the following table. For more information about security advisory versioning, refer to K51812227: Understanding Security Advisory versioning.
| Product | Branch | Versions known to be vulnerable | Fixes introduced in | Severity | CVSSv3 score1 | Vulnerable component or feature |
|---|---|---|---|---|---|---|
| BIG-IP (Advanced WAF, FPS) | 16.x | 16.0.0 | 16.0.1 | Medium | 5.9 | TMM |
| 15.x | 15.0.0 – 15.1.0 | 15.1.1 | ||||
| 14.x | 14.1.0 – 14.1.2 | 14.1.2.8 | ||||
| 13.x | None | Not applicable | ||||
| 12.x | None | Not applicable | ||||
| 11.x | None | Not applicable | ||||
| BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DDHD, DNS, GTM, Link Controller, PEM, SSLO) | ||||||
| 16.x | None | Not applicable | Not vulnerable | None | None | |
| 15.x | None | Not vulnerable | None | None | ||
| 14.x | None | Not applicable | ||||
| 13.x | None | Not applicable | ||||
| 12.x | None | Not applicable | ||||
| 11.x | None | Not applicable | ||||
| BIG-IQ Centralized Management | ||||||
| 7.x | None | Not applicable | Not vulnerable | None | None | |
| 6.x | None | Not applicable | ||||
| 5.x | None | Not applicable | ||||
| Traffix SDC | ||||||
| 5.x | None | Not applicable | Not vulnerable | None | None |
1The CVSSv3 score link takes you to a resource outside of AskF5, and it is possible that the document may be removed without our knowledge.
Security Advisory Recommended Actions
If you are running a version listed in the Versions known to be vulnerable column, you can eliminate this vulnerability by upgrading to a version listed in the Fixes introduced in column. If the table lists only an older version than what you are currently running, or does not list a non-vulnerable version, then no upgrade candidate currently exists.
Mitigation
None
Supplemental Information
- K41942608: Overview of security advisory articles
- K4602: Overview of the F5 security vulnerability response policy
- K4918: Overview of the F5 critical issue hotfix policy
- K9502: BIG-IP hotfix and point release matrix
- K13123: Managing BIG-IP product hotfixes (11.x – 15.x)
- K167: Downloading software and firmware from F5
- K9970: Subscribing to email notifications regarding F5 products
- K9957: Creating a custom RSS feed to view new and updated documents