CVE intelligence and bounded remediation
CVE-2019-6636 — F5 Big-Ip Advanced Firewall Manager security vulnerability
On BIG-IP (AFM, ASM) 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.1.4, 12.1.0-12.1.4, and 11.5.1-11.6.4, a stored cross-site scripting vulnerability in AFM feed list. In the worst case, an attacker can store a CSRF which results in code execution as the admin user. The level of user role which can perform this attack are resource administrator and administrator.
- Severity
- High
- CVSS
- 8.5 (2.0)
- Published
- 2019-07-03
- CISA KEV
- Not currently listed
- Ecosystem
- software/application
- Weaknesses
- CWE-79, CWE-352
Affected products
- f5 / big-ip_advanced_firewall_manager
- f5 / big-ip_application_security_manager
Showing 2 representative product identities from 8 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.
Matched remediation archetype
Cross-site scripting and unsafe browser output
This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.
Check exposure
- Trace reflected, stored, and DOM-derived untrusted values into HTML, attributes, URLs, styles, scripts, and client-side template sinks.
- Identify affected origins, authenticated user roles, sensitive browser capabilities, and where content is shared across tenants.
- Review framework escaping, rich-text sanitization, legacy templates, and client-side rendering paths.
Remediate safely
- Use context-aware framework output encoding and safe DOM APIs; keep untrusted data out of executable contexts.
- Sanitize intentionally supported markup with a maintained allowlist policy and validate URLs and attributes separately.
- Update affected rendering components and add tests for every output context using inert sentinel markup.
Authoritative sources
Complete CVE record and remediation plan
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