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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.009 (58.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- F5 Big-Ip Advanced Web Application Firewall
- F5 Big-Ip Application Security Manager
- 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
- support.f5.com/csp/article/K36942191 (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.