F5 BIG-IP up to 11.6.3.2/12.1.3.7/13.1.1.1 MPTCP resource consumption

Summaryinfo

A vulnerability described as problematic has been identified in F5 BIG-IP up to 11.6.3.2/12.1.3.7/13.1.1.1. Affected by this issue is some unknown functionality of the component MPTCP. The manipulation results in resource consumption. This vulnerability is known as CVE-2019-6594. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as problematic has been found in F5 BIG-IP up to 11.6.3.2/12.1.3.7/13.1.1.1 (Firewall Software). Affected is an unknown code block of the component MPTCP. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability. CVE summarizes:

On BIG-IP 11.5.1-11.6.3.2, 12.1.3.4-12.1.3.7, 13.0.0 HF1-13.1.1.1, and 14.0.0-14.0.0.2, Multi-Path TCP (MPTCP) does not protect against multiple zero length DATA_FINs in the reassembly queue, which can lead to an infinite loop in some circumstances.

The bug was discovered 02/26/2019. The weakness was published 02/26/2019. This vulnerability is traded as CVE-2019-6594 since 01/22/2019. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/19/2023). The MITRE ATT&CK project declares the attack technique as T1499.

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

Similar entries are available at VDB-131219 and VDB-131218. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Firewall Software

Vendor

• F5

Name

• BIG-IP

Version

• 11.6.3.0
• 11.6.3.1
• 11.6.3.2
• 12.1.3.0
• 12.1.3.1
• 12.1.3.2
• 12.1.3.3
• 12.1.3.4
• 12.1.3.5
• 12.1.3.6
• 12.1.3.7
• 13.1.1.0
• 13.1.1.1

License

• commercial

Website

• Vendor: https://f5.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Once again VulDB remains the best source for vulnerability data.

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