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.
2023-04-17T22:15:09.877
2024-11-21T07:56:20.477
Modified
CVSSv3.1: 5.3 (MEDIUM)
Type | Vendor | Product | Version/Range | Vulnerable? |
---|---|---|---|---|
Operating System | juniper | junos | 20.2 | Yes |
Operating System | juniper | junos | 20.2 | Yes |
Operating System | juniper | junos | 20.2 | Yes |
Operating System | juniper | junos | 20.2 | Yes |
Operating System | juniper | junos | 20.2 | Yes |
Operating System | juniper | junos | 20.2 | Yes |
Operating System | juniper | junos | 20.2 | Yes |
Operating System | juniper | junos | 20.2 | Yes |
Operating System | juniper | junos | 20.2 | Yes |
Operating System | juniper | junos | 20.2 | Yes |
Operating System | juniper | junos | 20.2 | Yes |
Operating System | juniper | junos | 20.2 | Yes |
Operating System | juniper | junos | 20.2 | Yes |
Operating System | juniper | junos | 20.2 | Yes |
Operating System | juniper | junos | 20.2 | Yes |
Operating System | juniper | junos | 20.2 | Yes |
Operating System | juniper | junos | 20.3 | Yes |
Operating System | juniper | junos | 20.3 | Yes |
Operating System | juniper | junos | 20.3 | Yes |
Operating System | juniper | junos | 20.3 | Yes |
Operating System | juniper | junos | 20.3 | Yes |
Operating System | juniper | junos | 20.3 | Yes |
Operating System | juniper | junos | 20.3 | Yes |
Operating System | juniper | junos | 20.3 | Yes |
Operating System | juniper | junos | 20.3 | Yes |
Operating System | juniper | junos | 20.3 | Yes |
Operating System | juniper | junos | 20.3 | Yes |
Operating System | juniper | junos | 20.3 | Yes |
Operating System | juniper | junos | 20.4 | Yes |
Operating System | juniper | junos | 20.4 | Yes |
Operating System | juniper | junos | 20.4 | Yes |
Operating System | juniper | junos | 20.4 | Yes |
Operating System | juniper | junos | 20.4 | Yes |
Operating System | juniper | junos | 20.4 | Yes |
Operating System | juniper | junos | 20.4 | Yes |
Operating System | juniper | junos | 20.4 | Yes |
Operating System | juniper | junos | 20.4 | Yes |
Operating System | juniper | junos | 20.4 | Yes |
Operating System | juniper | junos | 20.4 | Yes |
Operating System | juniper | junos | 21.1 | Yes |
Operating System | juniper | junos | 21.1 | Yes |
Operating System | juniper | junos | 21.1 | Yes |
Operating System | juniper | junos | 21.1 | Yes |
Operating System | juniper | junos | 21.1 | Yes |
Operating System | juniper | junos | 21.1 | Yes |
Operating System | juniper | junos | 21.1 | Yes |
Operating System | juniper | junos | 21.1 | Yes |
Operating System | juniper | junos | 21.1 | Yes |
Operating System | juniper | junos | 21.1 | Yes |
Operating System | juniper | junos | 21.2 | Yes |
Operating System | juniper | junos | 21.2 | Yes |
Operating System | juniper | junos | 21.2 | Yes |
Operating System | juniper | junos | 21.2 | Yes |
Operating System | juniper | junos | 21.2 | Yes |
Operating System | juniper | junos | 21.2 | Yes |
Operating System | juniper | junos | 21.2 | Yes |
Operating System | juniper | junos | 21.2 | Yes |
Operating System | juniper | junos | 21.2 | Yes |
Operating System | juniper | junos | 21.2 | Yes |
Operating System | juniper | junos | 21.3 | Yes |
Operating System | juniper | junos | 21.3 | Yes |
Operating System | juniper | junos | 21.3 | Yes |
Operating System | juniper | junos | 21.3 | Yes |
Operating System | juniper | junos | 21.3 | Yes |
Operating System | juniper | junos | 21.3 | Yes |
Operating System | juniper | junos | 21.3 | Yes |
Operating System | juniper | junos | 21.3 | Yes |
Operating System | juniper | junos | 21.3 | Yes |
Operating System | juniper | junos | 21.3 | Yes |
Operating System | juniper | junos | 21.4 | Yes |
Operating System | juniper | junos | 21.4 | Yes |
Operating System | juniper | junos | 21.4 | Yes |
Operating System | juniper | junos | 21.4 | Yes |
Operating System | juniper | junos | 21.4 | Yes |
Operating System | juniper | junos | 21.4 | Yes |
Operating System | juniper | junos | 21.4 | Yes |
Operating System | juniper | junos | 22.1 | Yes |
Operating System | juniper | junos | 22.1 | Yes |
Operating System | juniper | junos | 22.1 | Yes |
Operating System | juniper | junos | 22.1 | Yes |
Operating System | juniper | junos | 22.1 | Yes |
Operating System | juniper | junos | 22.2 | Yes |
Operating System | juniper | junos | 22.2 | Yes |
Operating System | juniper | junos | 22.2 | Yes |
Operating System | juniper | junos | 22.3 | Yes |
Operating System | juniper | junos | 22.4 | Yes |
Hardware | juniper | qfx10000 | - | No |
Hardware | juniper | qfx10002 | - | No |
Hardware | juniper | qfx10002-32q | - | No |
Hardware | juniper | qfx10002-60c | - | No |
Hardware | juniper | qfx10002-72q | - | No |
Hardware | juniper | qfx10008 | - | No |
Hardware | juniper | qfx10016 | - | No |
Hardware | juniper | qfx10k | - | No |
Hardware | juniper | qfx3000-g | - | No |
Hardware | juniper | qfx3000-m | - | No |
Hardware | juniper | qfx3008-i | - | No |
Hardware | juniper | qfx3100 | - | No |
Hardware | juniper | qfx3500 | - | No |
Hardware | juniper | qfx3600 | - | No |
Hardware | juniper | qfx3600-i | - | No |
Hardware | juniper | qfx5100 | - | No |
Hardware | juniper | qfx5100-96s | - | No |
Hardware | juniper | qfx5110 | - | No |
Hardware | juniper | qfx5120 | - | No |
Hardware | juniper | qfx5130 | - | No |
Hardware | juniper | qfx5200 | - | No |
Hardware | juniper | qfx5200-32c | - | No |
Hardware | juniper | qfx5200-48y | - | No |
Hardware | juniper | qfx5210 | - | No |
Hardware | juniper | qfx5210-64c | - | No |
Hardware | juniper | qfx5220 | - | No |