CVE-2021-23029
Published: 14 September 2021
Summary
CVE-2021-23029 is a high-severity SSRF (CWE-918) vulnerability in F5 Big-Ip Advanced Web Application Firewall. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 48.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-10147
Vulnerability details
On version 16.0.x before 16.0.1.2, insufficient permission checks may allow authenticated users with guest privileges to perform Server-Side Request Forgery (SSRF) attacks through F5 Advanced Web Application Firewall (WAF) and the BIG-IP ASM Configuration utility. Note: Software versions which have…
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reached End of Technical Support (EoTS) are not evaluated.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing attempts server-side requests to internal resources, identifying SSRF weaknesses for remediation.
Outbound connections to external resources can be monitored and limited at the boundary, reducing SSRF impact.
Validates server-side URLs and resource references to block SSRF attempts.
Detects server-side request forgery through monitoring of unexpected outbound connections.