Summaryinfo

A vulnerability classified as critical was found in F5 BIG-IP up to 12.1.2. Affected by this vulnerability is an unknown functionality of the component Virtual Server. The manipulation as part of Packet leads to input validation. This vulnerability is known as CVE-2017-6140. The attack can be launched remotely. There is no exploit available. It is recommended to upgrade the affected component. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Detailsinfo

A vulnerability classified as critical has been found in F5 BIG-IP up to 12.1.2 (Firewall Software). Affected is an unknown part of the component Virtual Server. The manipulation as part of a Packet leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. CVE summarizes:

On the BIG-IP 2000s, 2200s, 4000s, 4200v, i5600, i5800, i7600, i7800, i10600,i10800, and VIPRION 4450 blades, running version 11.5.0, 11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.6.0, 11.6.1, 12.0.0, 12.1.0, 12.1.1 or 12.1.2 of BIG-IP LTM, AAM, AFM, Analytics, ASM, DNS, GTM or PEM, an undisclosed sequence of packets sent to Virtual Servers with client or server SSL profiles may cause disruption of data plane services.

The bug was discovered 12/19/2017. The weakness was presented 12/21/2017 (Website). The advisory is shared for download at support.f5.com. This vulnerability is traded as CVE-2017-6140 since 02/21/2017. The exploitability is told to be easy. 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 vulnerability scanner Nessus provides a plugin with the ID 118612 (F5 Networks BIG-IP : TMM vulnerability (K55102452)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family F5 Networks Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370706 (F5 BIG-IP ASM Data Plane Services Denial of Service Vulnerability).

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (118612). See VDB-110991, VDB-110990, VDB-110989 and VDB-110986 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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
• 11.6.0
• 11.6.1
• 12.0.0
• 12.1.0
• 12.1.1
• 12.1.2

License

• commercial

CPE 2.3info

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CPE 2.2info

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