A Use After Free vulnerability in the Layer 2 Address Learning Manager (l2alm) of Juniper Networks Junos OS on QFX Series allows an adjacent attacker to cause the Packet Forwarding Engine to crash and restart, leading to a Denial of Service (DoS). The PFE may crash when a lot of MAC learning and aging happens, but due to a Race Condition (Concurrent Execution using Shared Resource with Improper Synchronization) that is outside the attackers direct control. This issue affects: Juniper Networks Junos OS versions prior to 19.4R3-S10 on QFX Series; 20.2 versions prior to 20.2R3-S7 on QFX Series; 20.3 versions prior to 20.3R3-S6 on QFX Series; 20.4 versions prior to 20.4R3-S5 on QFX Series; 21.1 versions prior to 21.1R3-S4 on QFX Series; 21.2 versions prior to 21.2R3-S3 on QFX Series; 21.3 versions prior to 21.3R3-S3 on QFX Series; 21.4 versions prior to 21.4R3 on QFX Series; 22.1 versions prior to 22.1R3 on QFX Series; 22.2 versions prior to 22.2R2 on QFX Series.
References
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: juniper

Published: 2023-04-17T00:00:00

Updated: 2024-08-02T13:51:39.002Z

Reserved: 2023-03-29T00:00:00

Link: CVE-2023-28984

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2023-04-17T22:15:09.877

Modified: 2023-05-01T19:07:46.193

Link: CVE-2023-28984

cve-icon Redhat

No data.