F5 BIG-IP up to 12.1.3.6/13.1.1.1/14.0.0.2 TMM input validation

Summaryinfo

A vulnerability was found in F5 BIG-IP up to 12.1.3.6/13.1.1.1/14.0.0.2. It has been rated as problematic. Affected by this vulnerability is an unknown functionality of the component TMM. Performing a manipulation results in input validation. This vulnerability is reported as CVE-2018-15319. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in F5 BIG-IP up to 12.1.3.6/13.1.1.1/14.0.0.2 (Firewall Software). It has been classified as problematic. This affects an unknown function of the component TMM. The manipulation with an unknown input 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. The summary by CVE is:

On BIG-IP 14.0.0-14.0.0.2, 13.0.0-13.1.1.1, or 12.1.0-12.1.3.6, malicious requests made to virtual servers with an HTTP profile can cause the TMM to restart. The issue is exposed with the non-default "normalize URI" configuration options used in iRules and/or BIG-IP LTM policies.

The bug was discovered 11/01/2018. The weakness was disclosed 10/30/2018 (Website). The advisory is shared at support.f5.com. This vulnerability is uniquely identified as CVE-2018-15319 since 08/14/2018. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 118689 (F5 Networks BIG-IP : TMM vulnerability (K64208870)), 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 371353 (F5 BIG-IP ASM,LTM,APM TMM Traffic Disruption Vulnerability (K64208870)).

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 (118689). The entries VDB-126361, VDB-126360, VDB-126359 and VDB-126358 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Firewall Software

Vendor

• F5

Name

• BIG-IP

Version

• 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
• 13.1.1.0
• 13.1.1.1
• 14.0.0.0
• 14.0.0.1
• 14.0.0.2

License

• commercial

Website

• Vendor: https://f5.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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