PT-2022-3885 · Juniper Networks · Junos

Published 2022-07-13 · Updated 2022-07-29 · CVE-2022-22210

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Juniper Networks Junos OS on QFX5000 Series, MX Series versions 20.3 through 20.3R3-S3 Juniper Networks Junos OS on QFX5000 Series, MX Series versions 20.4 through 20.4R3-S2 Juniper Networks Junos OS on QFX5000 Series, MX Series versions 21.2 through 21.2R2-S1

Description A NULL Pointer Dereference issue in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows an unauthenticated adjacent attacker to cause a Denial of Service (DoS). 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.

Recommendations For versions 20.3 through 20.3R3-S3, update to version 20.3R3-S3 or later. For versions 20.4 through 20.4R3-S2, update to version 20.4R3-S2 or later. For versions 21.2 through 21.2R2-S1, update to version 21.2R2-S1 or later. As a temporary workaround, consider restricting the receipt of VxLAN packets to minimize the risk of exploitation.

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2022-04694

CVE-2022-22210

Affected Products

Junos

References · 5

• https://bdu.fstec.ru/vul/2022-04694 · Security Note
• https://kb.juniper.net/JSA69714 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-22210 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-22210 · Security Note
• https://t.me/cibsecurity/46671 · Telegram Post