Juniper Junos OS on MX Periodic Packet Management Daemon undefined values

Summaryinfo

A vulnerability classified as critical was found in Juniper Junos OS on MX. This affects an unknown part of the component Periodic Packet Management Daemon. The manipulation results in improper handling of undefined values. This vulnerability is reported as CVE-2023-36848. The attacker must have access to the local network to execute the attack. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in Juniper Junos OS on MX (Router Operating System) (version unknown). Affected is an unknown function of the component Periodic Packet Management Daemon. The manipulation with an unknown input leads to a improper handling of undefined values vulnerability. CWE is classifying the issue as CWE-232. The product does not handle or incorrectly handles when a value is not defined or supported for the associated parameter, field, or argument name. This is going to have an impact on availability. CVE summarizes:

An Improper Handling of Undefined Values vulnerability in the periodic packet management daemon (PPMD) of Juniper Networks Junos OS on MX Series(except MPC10, MPC11 and LC9600) allows an unauthenticated adjacent attacker to cause a Denial of Service (DoS). When a malformed CFM packet is received, it leads to an FPC crash. Continued receipt of these packets causes a sustained denial of service. This vulnerability occurs only when CFM has been configured on the interface. This issue affects Juniper Networks Junos OS: versions prior to 19.1R3-S10 on MX Series; 19.2 versions prior to 19.2R3-S7 on MX Series; 19.3 versions prior to 19.3R3-S8 on MX Series; 19.4 versions prior to 19.4R3-S12 on MX Series; 20.1 version 20.1R1 and later versions on MX Series; 20.2 versions prior to 20.2R3-S8 on MX Series; 20.3 version 20.3R1 and later versions on MX Series; 20.4 versions prior to 20.4R3-S7 on MX Series; 21.1 versions prior to 21.1R3-S5 on MX Series; 21.2 versions prior to 21.2R3-S5 on MX Series; 21.3 versions prior to 21.3R3-S4 on MX Series; 21.4 versions prior to 21.4R3-S4 on MX Series; 22.1 versions prior to 22.1R3-S3 on MX Series; 22.2 versions prior to 22.2R3-S1 on MX Series; 22.3 versions prior to 22.3R3 on MX Series; 22.4 versions prior to 22.4R1-S2, 22.4R2 on MX Series.

The weakness was disclosed 07/14/2023 as JSA71659. The advisory is shared for download at supportportal.juniper.net. This vulnerability is traded as CVE-2023-36848 since 06/27/2023. There are neither technical details nor an exploit publicly 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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