QID 375530

Date Published: 2021-06-07

QID 375530: F5 BIG-IP ASM WebSocket vulnerability(K18570111)

F5 BIG-IP ASM (Application Security Manager) is a flexible web application firewall that secures web applications in traditional, virtual, and private cloud environments.

CVE-2021-23010: When the BIG-IP ASM system processes WebSocket requests with JSON payloads using the default JSON content profile in the ASM security policy, the BIG-IP ASM bd process may produce a core file.

Vulnerable Component: BIG-IP ASM

Affected Versions:
16.0.0 - 16.0.1
15.1.0 - 15.1.1
14.1.0 - 14.1.3
13.1.0 - 13.1.3
12.1.0 - 12.1.5

QID Detection Logic(Authenticated):
This QID checks for the vulnerable versions of F5 BIG-IP devices using the tmsh command.

When this vulnerability is exploited, the BIG-IP ASM bd process may produce a core file, interrupt traffic processing, and cause a failover event.

CVSS V3 rated as Critical - 9.8 severity.

CVSS V2 rated as Critical - 10 severity.

Solution

The vendor has released any patch, for more information please visit: K18570111

Workaround:
To mitigate this vulnerability, you can use the ASM Security menu to create a new custom JSON content profile and then apply it to Allowed WebSocket URLs.

Vendor References

K18570111 - support.f5.com/csp/article/K18570111

CVEs related to QID 375530

CVE-2021-23010 |

Software Advisories

Advisory ID	Software	Component	Link
K18570111			support.f5.com/csp/article/K18570111

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