#VU52231 Input validation error in Juniper Junos OS - CVE-2021-0237

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Main Vulnerability Database Vulnerabilities #VU52231

#VU52231 Input validation error in Juniper Junos OS - CVE-2021-0237

Published: April 15, 2021


Vulnerability identifier: #VU52231
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-0237
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Juniper Junos OS
Software vendor:
Juniper Networks, Inc.

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when processing specific layer 2 frames on Juniper Networks EX4300-MP Series, EX4600 Series, EX4650 Series, QFX5K Series deployed as a Virtual Chassis with a specific Layer 2 circuit configuration. A remote attacker can send specially crafted traffic to the system and crash the Packet Forwarding Engine manager (FXPC).


Remediation

Install updates from vendor's website.

External links