F5 BIG-IP up to 11.5.8/11.6.3/12.0.x SSL Virtual Server Packet Sequence input validation

Summaryinfo

A vulnerability classified as problematic has been found in F5 BIG-IP up to 11.5.8/11.6.3/12.0.x. Affected is an unknown function of the component SSL Virtual Server. The manipulation as part of Packet leads to input validation (Sequence). This vulnerability is listed as CVE-2019-6605. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in F5 BIG-IP up to 11.5.8/11.6.3/12.0.x (Firewall Software) and classified as problematic. This issue affects some unknown processing of the component SSL Virtual Server. The manipulation as part of a Packet leads to a input validation vulnerability (Sequence). Using CWE to declare the problem leads to 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. Impacted is availability. The summary by CVE is:

On BIG-IP 11.5.1-11.5.8, 11.6.1-11.6.3, and 12.0.x, an undisclosed sequence of packets received by an SSL virtual server and processed by an associated Client SSL or Server SSL profile may cause a denial of service.

The bug was discovered 03/22/2019. The weakness was presented 03/28/2019 (Website). The advisory is shared at securityfocus.com. The identification of this vulnerability is CVE-2019-6605 since 01/22/2019. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. 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 08/17/2023).

The vulnerability was handled as a non-public zero-day exploit for at least 6 days. During that time the estimated underground price was around $5k-$25k.

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

See VDB-132590, VDB-132596, VDB-132594 and VDB-132592 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

• 11.5.0
• 11.5.1
• 11.5.2
• 11.5.3
• 11.5.4
• 11.5.5
• 11.5.6
• 11.5.7
• 11.5.8
• 11.6.0
• 11.6.1
• 11.6.2
• 11.6.3
• 12.0

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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