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Vulnerability DatabaseCVE-2020-5856

CVE-2020-5856: 
F5 BIG-IP Advanced Firewall Manager vulnerability analysis and mitigation

Overview

On BIG-IP versions 15.0.0-15.0.1.1 and 14.1.0-14.1.2.2, Virtual Edition instances hosted in Amazon Web Services (AWS) may experience a TMM restart while processing specifically crafted traffic using the default 'xnet' driver. This vulnerability was assigned CVE-2020-5856 and was disclosed on January 6, 2020 (CVE Mitre).

Technical details

The vulnerability affects BIG-IP Virtual Edition instances specifically when deployed in AWS environments and involves the default 'xnet' driver. When processing certain crafted traffic patterns, the system's Traffic Management Microkernel (TMM) may restart (CVE Mitre).

Impact

The primary impact of this vulnerability is a potential denial of service condition, as affected systems may experience TMM restarts when processing specifically crafted traffic, which could interrupt service availability for AWS-hosted BIG-IP Virtual Edition instances (CVE Mitre).

Mitigation and workarounds

F5 Networks has addressed this vulnerability through a security advisory (K00025388). Users should update their BIG-IP Virtual Edition instances to a patched version as recommended by F5 (CVE Mitre).

Additional resources

Source: This report was generated using AI

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