F5 BIG-IP up to 13.1.0.3 TMUI access control

Summaryinfo

A vulnerability labeled as critical has been found in F5 BIG-IP up to 13.1.0.3. This affects an unknown function of the component TMUI. The manipulation results in access control. This vulnerability is reported as CVE-2018-5523. The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, was found in F5 BIG-IP up to 13.1.0.3 (Firewall Software). Affected is an unknown part of the component TMUI. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

On F5 BIG-IP 13.1.0-13.1.0.3, 13.0.0, 12.1.0-12.1.3.1, 11.6.1-11.6.3.1, 11.5.1-11.5.5, or 11.2.1 and Enterprise Manager 3.1.1, when authenticated administrative users run commands in the Traffic Management User Interface (TMUI), also referred to as the BIG-IP Configuration utility, restrictions on allowed commands may not be enforced.

The bug was discovered 05/31/2018. The weakness was disclosed 06/01/2018 (Website). The advisory is shared for download at securitytracker.com. This vulnerability is traded as CVE-2018-5523 since 01/12/2018. The exploitability is told to be easy. It is possible to launch the attack remotely. A authentication is necessary for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 118672 (F5 Networks BIG-IP : BIG-IP Configuration utility vulnerability (K50254952)), 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 371023 (F5 BIG-IP ASM Configuration Utility Privilege Escalation Vulnerability (K50254952)).

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

The vulnerability is also documented in the vulnerability database at Tenable (118672). The entries VDB-118634, VDB-118633, VDB-118631 and VDB-118630 are pretty similar. 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

• 11.2.0
• 11.2.1
• 11.5.0
• 11.5.1
• 11.5.2
• 11.5.3
• 11.5.4
• 11.5.5
• 11.6.3.0
• 11.6.3.1
• 12.1.3.0
• 12.1.3.1
• 13.0
• 13.1.0.0
• 13.1.0.1
• 13.1.0.2
• 13.1.0.3

License

• commercial

Website

• Vendor: https://f5.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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