F5 BIG-IP up to 15.0.1 FastL4 Virtual Server input validation

Summaryinfo

A vulnerability was found in F5 BIG-IP up to 11.6.5/12.1.5/13.1.3.2/14.0.1/15.0.1 and classified as problematic. Affected by this issue is some unknown functionality of the component FastL4 Virtual Server. Executing a manipulation can lead to input validation. This vulnerability is handled as CVE-2019-6680. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in F5 BIG-IP up to 11.6.5/12.1.5/13.1.3.2/14.0.1/15.0.1 (Firewall Software) and classified as problematic. This vulnerability affects an unknown code of the component FastL4 Virtual Server. 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 versions 15.0.0-15.0.1, 14.1.0-14.1.2, 14.0.0-14.0.1, 13.1.0-13.1.3.2, 12.1.0-12.1.5, and 11.5.2-11.6.5, while processing traffic through a standard virtual server that targets a FastL4 virtual server (VIP on VIP), hardware appliances may stop responding.

The weakness was released 12/23/2019 (Website). The advisory is shared for download at support.f5.com. This vulnerability was named CVE-2019-6680 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. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 12/24/2019).

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-147680, VDB-147677, VDB-147675 and VDB-147674. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Firewall Software

Vendor

• F5

Name

• BIG-IP

Version

• 11.6.0
• 11.6.1
• 11.6.2
• 11.6.3
• 11.6.4
• 11.6.5
• 12.1.0
• 12.1.1
• 12.1.2
• 12.1.3
• 12.1.4
• 12.1.5
• 13.1.3.0
• 13.1.3.1
• 13.1.3.2
• 14.0.0
• 14.0.1
• 15.0.0
• 15.0.1

License

• commercial

Website

• Vendor: https://f5.com/

CPE 2.3info

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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