F5 BIG-IP up to 15.0.1 TMM input validation

Summaryinfo

A vulnerability, which was classified as problematic, has been found in F5 BIG-IP up to 12.1.5/13.1.3.1/14.0.1/14.1.2/15.0.1. This impacts an unknown function of the component TMM. This manipulation causes input validation. This vulnerability appears as CVE-2019-6677. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability classified as problematic was found in F5 BIG-IP up to 12.1.5/13.1.3.1/14.0.1/14.1.2/15.0.1 (Firewall Software). Affected by this vulnerability is an unknown functionality of the component TMM. 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. The summary by CVE is:

On BIG-IP versions 15.0.0-15.0.1, 14.1.0-14.1.2, 14.0.0-14.0.1, 13.1.0-13.1.3.1, and 12.1.0-12.1.5, under certain conditions when using custom TCP congestion control settings in a TCP profile, TMM stops processing traffic when processed by an iRule.

The weakness was presented 12/23/2019 (Website). The advisory is shared at support.f5.com. This vulnerability is known as CVE-2019-6677 since 01/22/2019. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (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.

See VDB-147677, VDB-147676, VDB-147675 and VDB-147674 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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
• 12.1.5
• 13.1.3.0
• 13.1.3.1
• 14.0.0
• 14.0.1
• 14.1.0
• 14.1.1
• 14.1.2
• 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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Entryinfo

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

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