Juniper Junos OS on QFX5000/EX4000 Packet Forwarding Engine denial of service

Summaryinfo

A vulnerability described as critical has been identified in Juniper Junos OS on QFX5000/EX4000. This vulnerability affects unknown code of the component Packet Forwarding Engine. The manipulation results in denial of service. This vulnerability was named CVE-2023-44183. The attack needs to be approached within the local network. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in Juniper Junos OS on QFX5000/EX4000 (Router Operating System) (unknown version). Affected is an unknown code block of the component Packet Forwarding Engine. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

An Improper Input Validation vulnerability in the VxLAN packet forwarding engine (PFE) of Juniper Networks Junos OS on QFX5000 Series, EX4600 Series devices allows an unauthenticated, adjacent attacker, sending two or more genuine packets in the same VxLAN topology to possibly cause a DMA memory leak to occur under various specific operational conditions. The scenario described here is the worst-case scenario. There are other scenarios that require operator action to occur. An indicator of compromise may be seen when multiple devices indicate that FPC0 has gone missing when issuing a show chassis fpc command for about 10 to 20 minutes, and a number of interfaces have also gone missing. Use the following command to determine if FPC0 has gone missing from the device. show chassis fpc detail This issue affects: Juniper Networks Junos OS on QFX5000 Series, EX4600 Series: * 18.4 version 18.4R2 and later versions prior to 20.4R3-S8; * 21.1 version 21.1R1 and later versions prior to 21.2R3-S6; * 21.3 versions prior to 21.3R3-S5; * 21.4 versions prior to 21.4R3-S4; * 22.1 versions prior to 22.1R3-S3; * 22.2 versions prior to 22.2R3-S1; * 22.3 versions prior to 22.3R2-S2, 22.3R3; * 22.4 versions prior to 22.4R2.

The weakness was presented 10/13/2023 as JSA73148. The advisory is available at supportportal.juniper.net. This vulnerability is traded as CVE-2023-44183 since 09/26/2023. The technical details are unknown and an exploit is not available.

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Router Operating System

Vendor

• Juniper

Name

• Junos OS

License

• commercial

Website

• Vendor: https://www.juniper.net/

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CPE 2.2info

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Entryinfo

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