F5 BIG-IP 12.1.0/12.1.1/12.1.2/13.0.0 iControl REST race condition

Summaryinfo

A vulnerability classified as critical has been found in F5 BIG-IP 12.1.0/12.1.1/12.1.2/13.0.0. Affected by this issue is some unknown functionality of the component iControl REST Handler. Performing a manipulation results in race condition. This vulnerability is identified as CVE-2017-6167. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in F5 BIG-IP 12.1.0/12.1.1/12.1.2/13.0.0 (Firewall Software). This affects some unknown processing of the component iControl REST Handler. The manipulation with an unknown input leads to a race condition vulnerability. CWE is classifying the issue as CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In F5 BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, Link Controller, PEM and WebSafe software version 13.0.0 and 12.1.0 - 12.1.2, race conditions in iControl REST may lead to commands being executed with different privilege levels than expected.

The bug was discovered 12/21/2017. The weakness was released 12/21/2017 (Website). It is possible to read the advisory at support.f5.com. This vulnerability is uniquely identified as CVE-2017-6167 since 02/21/2017. 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 vulnerability scanner Nessus provides a plugin with the ID 118602 (F5 Networks BIG-IP : iControl REST vulnerability (K24465120)), 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.

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 (118602). Entries connected to this vulnerability are available at VDB-110990, VDB-110989 and VDB-110988. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Firewall Software

Vendor

• F5

Name

• BIG-IP

Version

• 12.1.0
• 12.1.1
• 12.1.2
• 13.0.0

License

• commercial

Website

• Vendor: https://f5.com/

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CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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