Auth bypass in F5 Big-Ip Advanced Web Application Firewall
CVE-2021-23014
On versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.3, and 14.1.x before 14.1.4, BIG-IP Advanced WAF and ASM are missing authorization checks for file uploads to a specific directory within the REST API which might allow Authenticated users with guest privileges to upload files. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (56.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- F5 Big-Ip Advanced Web Application Firewall
- F5 Big-Ip Application Security Manager
- Big-Ip Asm/advanced Waf — versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.3, and 14.1.x before 14.1.4
Weakness classification (CWE)
References
- support.f5.com/csp/article/K23203045 (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-23014?
- CVE-2021-23014 is a high-severity vulnerability in F5 Big-Ip Advanced Web Application Firewall, classified under Missing Authorization. CVSS score: 8.8/10. Published 2021-05-10.
- How severe is CVE-2021-23014?
- High severity. CVSS v3 base score is 8.8 out of 10.