High [CVE-2021-23049] On BIG-IP version 16.0.x before 16.0.1.2 and 15.1.x before 15.1.3
This high-severity F5 advisory covers CVE-2021-23049 affecting BIG-IP.
Android app · Google Play
Monitor future F5 CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.
Summary
On BIG-IP version 16.0.x before 16.0.1.2 and 15.1.x before 15.1.3, when the iRules RESOLVER::summarize command is used on a virtual server, undisclosed requests can cause an increase in Traffic Management Microkernel (TMM) memory utilization resulting in an out-of-memory condition and a denial-of-service (DoS).
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
- 16.0.x
- 15.1.x
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- 16.0.1.2
- 15.1.3
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation
Upgrade to a fixed release: 16.0.1.2, 15.1.3. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Discussion(0)
No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.
Sign in to join the discussion.