CVE-2023-44183

Summary

CVE-2023-44183 is an Input Validation vulnerability in Juniper Networks Junos OS on QFX5000 Series, EX4600 Series devices. An unauthenticated, adjacent attacker can send specific packets to trigger a DMA memory leak in the VxLAN packet forwarding engine (PFE), causing FPC0 to go missing and interfaces to disappear. This issue is worst-case scenario, but other operational conditions are also possible. Affected versions include 18.4, 21.1, 21.3, 21.4, 21.4R1, 21.4R2, 22.1, 22.2, 22.3, and 22.4 prior to certain releases. The vulnerability can be detected by checking for FPC0 disappearance using the 'show chassis fpc detail' command.

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