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THREATINT
PUBLISHED

CVE-2024-21605

Junos OS: SRX 300 Series: Specific link local traffic causes a control plane overload

Reserved:2023-12-27
Published:2024-04-12
Updated:2024-05-16

Description

An Exposure of Resource to Wrong Sphere vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX 300 Series allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS). Specific valid link-local traffic is not blocked on ports in STP blocked state but is instead sent to the control plane of the device. This leads to excessive resource consumption and in turn severe impact on all control and management protocols of the device. This issue affects Juniper Networks Junos OS: * 21.2 version 21.2R3-S3 and later versions earlier than 21.2R3-S6; * 22.1 version 22.1R3 and later versions earlier than 22.1R3-S4; * 22.2 version 22.2R2 and later versions earlier than 22.2R3-S2; * 22.3 version 22.3R2 and later versions earlier than 22.3R3-S1; * 22.4 versions earlier than 22.4R2-S2, 22.4R3; * 23.2 versions earlier than 23.2R1-S1, 23.2R2. This issue does not affect Juniper Networks Junos OS 21.4R1 and later versions of 21.4.



MEDIUM: 6.5CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-668 Exposure of Resource to Wrong Sphere

Denial of Service

Product status

Default status
unaffected

21.2R3-S3 before 21.2R3-S6
affected

22.1R3 before 22.1R3-S4
affected

22.2R2 before 22.2R3-S2
affected

22.3R2 before 22.3R3-S1
affected

22.4 before 22.4R2-S2, 22.4R3
affected

23.2 before 23.2R1-S1, 23.2R2
affected

21.4 before 21.4*
unaffected

Timeline

2024-04-10:Initial Publication

References

https://supportportal.juniper.net/JSA75746 vendor-advisory

https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L technical-description

cve.org CVE-2024-21605

nvd.nist.gov CVE-2024-21605

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