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.
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Affected Vendors & Products
References
Link | Providers |
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https://supportportal.juniper.net/JSA70610 |
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History
Wed, 05 Feb 2025 22:15:00 +0000
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Status: PUBLISHED
Assigner: juniper
Published:
Updated: 2025-02-05T21:26:52.313Z
Reserved: 2023-03-29T00:00:00.000Z
Link: CVE-2023-28984
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Updated: 2024-08-02T13:51:39.002Z
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Status : Modified
Published: 2023-04-17T22:15:09.877
Modified: 2024-11-21T07:56:20.477
Link: CVE-2023-28984
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