What is CVE-2021-23053?

CVE-2021-23053 is a medium-severity vulnerability in F5 Big-Ip Advanced Web Application Firewall, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2021-09-14.

How severe is CVE-2021-23053?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Resource exhaustion in F5 Big-Ip Advanced Web Application Firewall

CVE-2021-23053

On version 15.1.x before 15.1.3, 14.1.x before 14.1.3.1, and 13.1.x before 13.1.3.6, when the brute force protection feature of BIG-IP Advanced WAF or BIG-IP ASM is enabled on a virtual server and the virtual server is under brute force attack, the MySQL database may run out of disk space due to lack of row limit on undisclosed tables in the MYSQL database. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.009 (56.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

F5 Big-ip_advanced_web_application_firewall
F5 Big-ip_application_security_manager
N/a Big-ip Advanced Waf And Asm — versions 15.1.x before 15.1.3, 14.1.x before 14.1.3.1, and 13.1.x before 13.1.3.6

Weakness classification (CWE)

References

f5sirt@f5.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-23053?: CVE-2021-23053 is a medium-severity vulnerability in F5 Big-Ip Advanced Web Application Firewall, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2021-09-14.
How severe is CVE-2021-23053?: Medium severity. CVSS v3 base score is 5.3 out of 10.