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MEDIUM · 5.3

CVE-2023-28984

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...

Vulnerability Description

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.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
ADJACENT_NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
JuniperJunos20.2
JuniperQfx10000-
JuniperQfx10002-
JuniperQfx10002-32Q-
JuniperQfx10002-60C-
JuniperQfx10002-72Q-
JuniperQfx10008-
JuniperQfx10016-
JuniperQfx10K-
JuniperQfx3000-G-
JuniperQfx3000-M-
JuniperQfx3008-I-
JuniperQfx3100-
JuniperQfx3500-
JuniperQfx3600-
JuniperQfx3600-I-
JuniperQfx5100-
JuniperQfx5100-96S-
JuniperQfx5110-
JuniperQfx5120-

Related Weaknesses (CWE)

CWE-362CWE-416

References

FAQ

What is CVE-2023-28984?

CVE-2023-28984 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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...

How severe is CVE-2023-28984?

CVE-2023-28984 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2023-28984?

Check the references section above for vendor advisories and patch information. Affected products include: Juniper Junos, Juniper Qfx10000, Juniper Qfx10002, Juniper Qfx10002-32Q, Juniper Qfx10002-60C.