Improper input validation in F5 Big-Ip Advanced Web Application Firewall
CVE-2021-23028
On version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.2, and 13.1.x before 13.1.4, when JSON content profiles are configured for URLs as part of an F5 Advanced Web Application Firewall (WAF)/BIG-IP ASM security policy and applied to a virtual server, undisclosed requests may cause the BIG-IP ASM bd process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
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: 0.009 (59.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.2% 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 — versions 16.0.1
- F5 Big-Ip Application Security Manager — versions 16.0.1
- Big-Ip Advanced Waf And Asm — versions 16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.2, and 13.1.x before 13.1.4
Weakness classification (CWE)
References
- support.f5.com/csp/article/K00602225 (Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-23028?
- CVE-2021-23028 is a high-severity vulnerability in F5 Big-Ip Advanced Web Application Firewall, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2021-09-14.
- How severe is CVE-2021-23028?
- High severity. CVSS v3 base score is 7.5 out of 10.