CVE-2020-5859
F5 BIG-IP Advanced Firewall Manager vulnerability analysis and mitigation

Overview

CVE-2020-5859 affects BIG-IP version 15.1.0.1, where specially formatted HTTP/3 messages can cause TMM (Traffic Management Microkernel) to produce a core file. The vulnerability was discovered and disclosed in March 2020 (CVE Details).

Technical details

The vulnerability is related to the handling of HTTP/3 QUIC messages in BIG-IP systems. When specially crafted HTTP/3 messages are sent to the system, it can trigger a malfunction in the TMM component, resulting in a core file being generated. The vulnerability has been assigned a CVSS score of 5.0, indicating a medium severity level (Rapid7).

Impact

When successfully exploited, this vulnerability can cause the Traffic Management Microkernel (TMM) to produce a core file, potentially leading to service disruption on affected BIG-IP systems (CVE Details).

Mitigation and workarounds

F5 Networks has addressed this vulnerability in subsequent releases after version 15.1.0.1. Users are advised to upgrade to a patched version of the software (F5 Article).

Additional resources


SourceThis report was generated using AI

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