CVE-2023-44192

<br /> An Improper Input Validation vulnerability in the Packet Forwarding Engine of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause memory leak, leading to Denial of Service (DoS).<br /> <br /> On all Junos OS QFX5000 Series platforms, when pseudo-VTEP (Virtual Tunnel End Point) is configured under EVPN-VXLAN scenario, and specific DHCP packets are transmitted, DMA memory leak is observed. Continuous receipt of these specific DHCP packets will cause memory leak to reach 99% and then cause the protocols to stop working and traffic is impacted, leading to Denial of Service (DoS) condition. A manual reboot of the system recovers from the memory leak.<br /> <br /> To confirm the memory leak, monitor for "sheaf:possible leak" and "vtep not found" messages in the logs.<br /> <br /> This issue affects:<br /> <br /> Juniper Networks Junos OS QFX5000 Series:<br /> <br /> <br /> <br /> * All versions prior to 20.4R3-S6;<br /> * 21.1 versions prior to 21.1R3-S5;<br /> * 21.2 versions prior to 21.2R3-S5;<br /> * 21.3 versions prior to 21.3R3-S4;<br /> * 21.4 versions prior to 21.4R3-S3;<br /> * 22.1 versions prior to 22.1R3-S2;<br /> * 22.2 versions prior to 22.2R2-S2, 22.2R3;<br /> * 22.3 versions prior to 22.3R2-S1, 22.3R3;<br /> * 22.4 versions prior to 22.4R1-S2, 22.4R2.<br /> <br /> <br /> <br /> <br /> <br /> <br />