Juniper Junos OS prior 20.3R1/20.3R3-S3/20.4R3-S2/21.1R1/21.2R2-S1 on QFX5000/MX Packet Forwarding Engine null pointer dereference

Summaryinfo

A vulnerability classified as problematic has been found in Juniper Junos OS on QFX5000/MX. Affected by this issue is some unknown functionality of the component Packet Forwarding Engine. The manipulation leads to null pointer dereference. This vulnerability is listed as CVE-2022-22210. The attack must be carried out from within the local network. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Juniper Junos OS on QFX5000/MX (Router Operating System). It has been rated as critical. This issue affects some unknown processing of the component Packet Forwarding Engine. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. The summary by CVE is:

A NULL Pointer Dereference vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on QFX5000 Series and MX Series allows an unauthenticated adjacent attacker to cause a Denial of Service (DoS). On QFX5K Series and MX Series, when the PFE receives a specific VxLAN packet the Layer 2 Address Learning Manager (L2ALM) process will crash leading to an FPC reboot. Continued receipt of this specific packet will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS on QFX5000 Series, MX Series: 20.3 versions prior to 20.3R3-S3; 20.4 versions prior to 20.4R3-S2; 21.2 versions prior to 21.2R2-S1. This issue does not affect Juniper Networks Junos OS: All versions prior to 20.3R1; 21.1 version 21.1R1 and later versions.

The weakness was presented 07/21/2022 as JSA69714. It is possible to read the advisory at kb.juniper.net. The identification of this vulnerability is CVE-2022-22210 since 12/21/2021. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 20.3R1, 20.3R3-S3, 20.4R3-S2, 21.1R1 or 21.2R2-S1 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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