XXE in F5 Big-Ip Advanced Web Application Firewall
CVE-2022-23031
On BIG-IP FPS, ASM, and Advanced WAF versions 16.1.x before 16.1.1, 15.1.x before 15.1.4, and 14.1.x before 14.1.4.4, an XML External Entity (XXE) vulnerability exists in an undisclosed page of the F5 Advanced Web Application Firewall (Advanced WAF) and BIG-IP ASM Traffic Management User Interface (TMUI), also referred to as the Configuration utility, that allows an authenticated high-privileged attacker to read local files and force BIG-IP to send HTTP requests. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Vulnerability class: XXE (XML External Entity)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.008 (56.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.0% 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
- F5 Big-Ip Fraud Protection Service
- Big-Ip Fps, Asm, And Advanced Waf — versions 16.1.x before 16.1.1, 15.1.x before 15.1.4, and 14.1.x before 14.1.4.4
Weakness classification (CWE)
References
- support.f5.com/csp/article/K61112120 (Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-23031?
- CVE-2022-23031 is a medium-severity vulnerability in F5 Big-Ip Advanced Web Application Firewall, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 4.9/10. Published 2022-01-25.
- How severe is CVE-2022-23031?
- Medium severity. CVSS v3 base score is 4.9 out of 10.