Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| F5 | Big-Ip Access Policy Manager | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Advanced Firewall Manager | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Advanced Web Application Firewall | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Analytics | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Application Acceleration Manager | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Application Security Manager | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Domain Name System | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Fraud Protection Service | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Global Traffic Manager | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Link Controller | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Local Traffic Manager | >= 15.1.0, < 15.1.3 |
Related Weaknesses (CWE)
References
- https://support.f5.com/csp/article/K65397301Vendor Advisory
- https://support.f5.com/csp/article/K65397301Vendor Advisory
FAQ
What is CVE-2021-23049?
CVE-2021-23049 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 Manage...
How severe is CVE-2021-23049?
CVE-2021-23049 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-2021-23049?
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 Advanced Web Application Firewall, F5 Big-Ip Analytics, F5 Big-Ip Application Acceleration Manager.