CSRF in F5 Big-Ip Advanced Web Application Firewall
CVE-2021-23050
On BIG-IP Advanced WAF and BIG-IP ASM version 16.0.x before 16.0.1.2 and 15.1.x before 15.1.3 and NGINX App Protect on all versions before 3.5.0, when a cross-site request forgery (CSRF)-enabled policy is configured on a virtual server, an undisclosed HTML response may cause the bd process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (38.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- F5 Big-Ip Advanced Web Application Firewall
- F5 Big-Ip Application Security Manager
- F5 nginx App Protect
- Big-Ip Advanced Waf And Asm; nginx App Protect — versions BIG-IP Advanced WAF and BIG-IP ASM 16.0.x before 16.0.1.2 and 15.1.x before 15.1.3, NGINX App Protect all versions before 3.5.0
Weakness classification (CWE)
References
- support.f5.com/csp/article/K44553214 (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-23050?
- CVE-2021-23050 is a high-severity vulnerability in F5 Big-Ip Advanced Web Application Firewall, classified under Cross-Site Request Forgery (CSRF). CVSS score: 7.5/10. Published 2021-09-14.
- How severe is CVE-2021-23050?
- High severity. CVSS v3 base score is 7.5 out of 10.