Reliance on Reverse DNS Resolution for a Security-Critical Action in F5 Networks products - CVE-2019-6663

Vulnerability identifier: #VU22978

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2019-6663

CWE-ID: CWE-350

Exploitation vector: Local access

Exploit availability: No public exploit available

Vendor: F5 Networks

Affected software:
Enterprise Manager
BIG-IQ Centralized Management
F5 iWorkflow
BIG-IP AAM
BIG-IP DNS
BIG-IP Edge Gateway
BIG-IP Link Controller
BIG-IP WebAccelerator
BIG-IP AFM
BIG-IP Analytics
BIG-IP APM
BIG-IP ASM
BIG-IP FPS
BIG-IP GTM
BIG-IP PEM
BIG-IP

The vulnerability allows a local user to perform an Anti DNS Pinning (DNS Rebinding) attack.

The vulnerability exists due to the Configuration utility does not sufficiently verify the Host field in the HTTP request. A local user initiating a DNS rebinding attack requires control of the DNS that is configured in a client that accesses the Configuration utility of the vulnerable system.

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

• https://support.f5.com/csp/article/K76052144