QID 375902

Date Published: 2021-09-30

QID 375902: F5 BIG-IP Application Security Manager (ASM) Traffic Management Microkernel (TMM) Vulnerability (K05043394)

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

When a BIG-IP ASM and DataSafe profile are configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. (CVE-2021-23036)

Vulnerable Component: BIG-IP ASM

Affected Versions:
16.0.0 - 16.0.1.1

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

Traffic is disrupted while the TMM process restarts. This vulnerability allows a remote attacker to cause a denial-of-service (DoS) on the BIG-IP system. There is no control plane exposure; this is a data plane issue only.

CVSS V3 rated as High - 7.5 severity.

CVSS V2 rated as Medium - 4.3 severity.

Solution

The vendor has released patch, for more information please visit: K05043394

Vendor References

K05043394 - support.f5.com/csp/article/K05043394

CVEs related to QID 375902

CVE-2021-23036 |

Software Advisories

Advisory ID	Software	Component	Link
K05043394			support.f5.com/csp/article/K05043394

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Array ( [qid] => 375902 [title] => F5 BIG-IP Application Security Manager (ASM) Traffic Management Microkernel (TMM) Vulnerability (K05043394) [severity] => 2 [description] => F5 BIG-IP ASM (Application Security Manager) is a flexible web application firewall that secures web applications in traditional, virtual, and private cloud environments.

When a BIG-IP ASM and DataSafe profile are configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. (CVE-2021-23036)

Vulnerable Component: BIG-IP ASM

Affected Versions:
16.0.0 - 16.0.1.1

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

[solution] => The vendor has released patch, for more information please visit: K05043394 [consequence] => Traffic is disrupted while the TMM process restarts. This vulnerability allows a remote attacker to cause a denial-of-service (DoS) on the BIG-IP system. There is no control plane exposure; this is a data plane issue only.

[published] => Yes [date_insert] => 2021-09-29 [date_published] => 2021-09-30 [cve] => Array ( [0] => CVE-2021-23036 ) [vendor_refs] => Array ( [0] => Array ( [vendor_ref] => K05043394 [vendor_ref_url] => https://support.f5.com/csp/article/K05043394 ) ) [cvss_v2] => Array ( [basescore] => 4.3 [temporalscore] => 3.2 ) [cvss_v3] => Array ( [basescore] => 7.5 [temporalscore] => 6.5 ) [patches] => Array ( [0] => Array ( [link] => https://support.f5.com/csp/article/K05043394 [advisory_id] => K05043394 [os_sw] => [component] => ) ) )