F5 BIG-IP up to 15.0.1.1 iRule privileges management

Summaryinfo

A vulnerability identified as critical has been detected in F5 BIG-IP up to 15.0.1.1. The affected element is an unknown function of the component iRule Handler. Performing a manipulation results in privileges management. This vulnerability is identified as CVE-2019-6685. The attack is only possible with local access. There is not any exploit available.

Detailsinfo

A vulnerability classified as critical has been found in F5 BIG-IP up to 15.0.1.1 (Firewall Software). This affects some unknown functionality of the component iRule Handler. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

On BIG-IP versions 15.0.0-15.0.1.1, 14.1.0-14.1.2.2, 14.0.0-14.0.1, 13.1.0-13.1.3.1, 12.1.0-12.1.5, and 11.5.2-11.6.5.1, users with access to edit iRules are able to create iRules which can lead to an elevation of privilege, configuration modification, and arbitrary system command execution.

The weakness was released 12/23/2019 (Website). The advisory is shared at support.f5.com. This vulnerability is uniquely identified as CVE-2019-6685 since 01/22/2019. An attack has to be approached locally. A authentication is required for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/24/2019). MITRE ATT&CK project uses the attack technique T1068 for this issue.

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

Entries connected to this vulnerability are available at VDB-147682, VDB-147680 and VDB-147677. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Firewall Software

Vendor

• F5

Name

• BIG-IP

Version

• 11.6.5.0
• 11.6.5.1
• 12.1.0
• 12.1.1
• 12.1.2
• 12.1.3
• 12.1.4
• 12.1.5
• 13.1.3.0
• 13.1.3.1
• 14.0.0
• 14.0.1
• 14.1.2.0
• 14.1.2.1
• 14.1.2.2
• 15.0.1.0
• 15.0.1.1

License

• commercial

Website

• Vendor: https://f5.com/

CPE 2.3info

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CPE 2.2info

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Exploitinginfo

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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