F5 BIG-IP Virtual Server up to 12.0.x/12.1.2/13.0.0 Traffic Management Microkernel input validation

Summaryinfo

A vulnerability was found in F5 BIG-IP Virtual Server up to 12.0.x/12.1.2/13.0.0. It has been rated as problematic. The affected element is an unknown function of the component Traffic Management Microkernel. Performing a manipulation results in input validation. This vulnerability is known as CVE-2017-6136. Remote exploitation of the attack is possible. No exploit is available. It is suggested to use restrictive firewalling.

Detailsinfo

A vulnerability was found in F5 BIG-IP Virtual Server up to 12.0.x/12.1.2/13.0.0 (Firewall Software). It has been classified as problematic. This affects an unknown function of the component Traffic Management Microkernel. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

In F5 BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, GTM, Link Controller, PEM and WebSafe software version 13.0.0 and 12.0.0 - 12.1.2, undisclosed traffic patterns sent to BIG-IP virtual servers, with the TCP Fast Open and Tail Loss Probe options enabled in the associated TCP profile, may cause a disruption of service to the Traffic Management Microkernel (TMM).

The bug was discovered 12/21/2017. The weakness was published 12/21/2017 (Website). The advisory is shared at support.f5.com. This vulnerability is uniquely identified as CVE-2017-6136 since 02/21/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/18/2023).

The vulnerability scanner Nessus provides a plugin with the ID 118613 (F5 Networks BIG-IP : TMM vulnerability (K81137982)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family F5 Networks Local Security Checks and running in the context l.

It is possible to mitigate the weakness by firewalling . A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (118613). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Firewall Software

Vendor

• F5

Name

• BIG-IP Virtual Server

Version

• 12.0
• 12.1.0
• 12.1.1
• 12.1.2
• 13.0

License

• commercial

Website

• Vendor: https://f5.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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