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Vulnerability DatabaseCVE-2021-23048

CVE-2021-23048: 
F5 BIG-IP Advanced Firewall Manager vulnerability analysis and mitigation

Overview

CVE-2021-23048 affects F5 BIG-IP systems and was disclosed on September 14, 2021. The vulnerability impacts multiple versions of BIG-IP including 16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.3, 13.1.x before 13.1.4.1, and all versions of 12.1.x and 11.6.x. The vulnerability is related to GPRS Tunneling Protocol (GTP) functionality (CERT-FR).

Technical details

The vulnerability occurs when GPRS Tunneling Protocol (GTP) iRules commands or a GTP profile is configured on a virtual server. Under these conditions, undisclosed GTP messages can cause the Traffic Management Microkernel (TMM) to terminate (CERT-FR).

Impact

When successfully exploited, this vulnerability can lead to a denial of service condition through the termination of the Traffic Management Microkernel (TMM), which is a critical component of the BIG-IP system (CERT-FR).

Mitigation and workarounds

F5 has released patched versions to address this vulnerability. Users should upgrade to version 16.0.1.2, 15.1.3.1, 14.1.4.3, or 13.1.4.1 depending on their current version track. Note that software versions which have reached End of Technical Support (EoTS) are not evaluated (CERT-FR).

Additional resources

Source: This report was generated using AI

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Published date

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