F5 BIG-IP up to 13.1.1.1/14.0.0.2 iControl/TMSH resource consumption

Summaryinfo

A vulnerability classified as problematic has been found in F5 BIG-IP up to 13.1.1.1/14.0.0.2. The affected element is an unknown function of the component iControl/TMSH. Performing a manipulation results in resource consumption. This vulnerability was named CVE-2018-15325. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in F5 BIG-IP up to 13.1.1.1/14.0.0.2 (Firewall Software). This affects some unknown processing of the component iControl/TMSH. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on confidentiality. The summary by CVE is:

In BIG-IP 14.0.0-14.0.0.2 or 13.0.0-13.1.1.1, iControl and TMSH usage by authenticated users may leak a small amount of memory when executing commands

The bug was discovered 10/31/2018. The weakness was presented 10/30/2018 (Website). It is possible to read the advisory at support.f5.com. This vulnerability is uniquely identified as CVE-2018-15325 since 08/14/2018. It is possible to initiate the attack remotely. Required for exploitation is a authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 118697 (F5 Networks BIG-IP : BIG-IP iControl and tmsh vulnerability (K77313277)), 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 371351 (F5 BIG-IP ASM,LTM,APM iControl and tmsh Memory Leak Vulnerability (K77313277)).

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 (118697). See VDB-126365, VDB-126361, VDB-126360 and VDB-126359 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Firewall Software

Vendor

• F5

Name

• BIG-IP

Version

• 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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