F5 BIG-IP up to 12.1.4/13.1.1.4/14.1.0.1 Traffic Management Microkernel input validation

Summaryinfo

A vulnerability classified as problematic was found in F5 BIG-IP up to 12.1.4/13.1.1.4/14.1.0.1. Affected is an unknown function of the component Traffic Management Microkernel. Executing a manipulation can lead to input validation. This vulnerability is handled as CVE-2019-6619. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in F5 BIG-IP up to 12.1.4/13.1.1.4/14.1.0.1 (Firewall Software). It has been declared as problematic. This vulnerability affects an unknown function of the component Traffic Management Microkernel. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. CVE summarizes:

On BIG-IP 14.0.0-14.1.0.1, 13.0.0-13.1.1.4, and 12.1.0-12.1.4, the Traffic Management Microkernel (TMM) may restart when a virtual server has an HTTP/2 profile with Application Layer Protocol Negotiation (ALPN) enabled and it processes traffic where the ALPN extension size is zero.

The bug was discovered 05/01/2019. The weakness was released 05/03/2019 (Website). The advisory is available at support.f5.com. This vulnerability was named CVE-2019-6619 since 01/22/2019. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 09/12/2023).

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $5k-$25k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371786 (F5 BIG-IP ASM,LTM,APM HTTP/2 ALPN vulnerability(K94563344)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Entries connected to this vulnerability are available at VDB-134384, VDB-134383, VDB-134382 and VDB-134385. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Firewall Software

Vendor

• F5

Name

• BIG-IP

Version

• 12.1.0
• 12.1.1
• 12.1.2
• 12.1.3
• 12.1.4
• 13.1.1.0
• 13.1.1.1
• 13.1.1.2
• 13.1.1.3
• 13.1.1.4
• 14.1.0.0
• 14.1.0.1

License

• commercial

Website

• Vendor: https://f5.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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