An Unsupported Feature in the UI vulnerability in Juniper Networks Junos OS on MX Series and EX9200 Series allows an unauthenticated, network-based attacker to cause partial impact to the integrity of the device.
If the "tcp-reset" option is added to the "reject" action in an IPv6 filter which matches on "payload-protocol", packets are permitted instead of rejected. This happens because the payload-protocol match criteria is not supported in the kernel filter causing it to accept all packets without taking any other action. As a fix the payload-protocol match will be treated the same as a "next-header" match to avoid this filter bypass.
This issue doesn't affect IPv4 firewall filters.
This issue affects Juniper Networks Junos OS on MX Series and EX9200 Series:
* All versions earlier than 20.4R3-S7;
* 21.1 versions earlier than 21.1R3-S5;
* 21.2 versions earlier than 21.2R3-S5;
* 21.3 versions earlier than 21.3R3-S4;
* 21.4 versions earlier than 21.4R3-S4;
* 22.1 versions earlier than 22.1R3-S2;
* 22.2 versions earlier than 22.2R3-S2;
* 22.3 versions earlier than 22.3R2-S2, 22.3R3;
* 22.4 versions earlier than 22.4R1-S2, 22.4R2-S2, 22.4R3.
Metrics
Affected Vendors & Products
References
History
Tue, 17 Jun 2025 21:15:00 +0000
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Status: PUBLISHED
Assigner: juniper
Published: 2024-01-12T00:55:07.323Z
Updated: 2025-06-17T21:09:19.924Z
Reserved: 2023-12-27T19:38:25.708Z
Link: CVE-2024-21607

Updated: 2024-08-01T22:27:35.403Z

Status : Modified
Published: 2024-01-12T01:15:49.057
Modified: 2024-11-21T08:54:42.600
Link: CVE-2024-21607

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