#VU9740 Improper input validation in BIG-IP APM - CVE-2017-6129

Vulnerability identifier: #VU9740

Vulnerability risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-6129

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
BIG-IP APM
Hardware solutions / Security hardware applicances

Vendor: F5 Networks

Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists on the systems with the TCP Fast Open and Tail Loss Probe options enabled in the associated TCP profile due to insufficient validation of user-supplied input. A remote attacker can send specially crafted traffic to the target virtual server, trigger an unspecified flaw and cause the Traffic Management Microkernel (TMM) to restart and traffic to disrupt.

Successful exploitation of the vulnerability results in denial of service.

Mitigation
The vulnerability is addressed in the following versions: 12.1.3, 13.1.0.

Vulnerable software versions

BIG-IP APM: 12.1.2 - 13.0.0

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External links
https://support.f5.com/csp/article/K20087443

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.