Input validation error in Junos OS Evolved and Juniper Junos OS - CVE-2021-0211

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Main Vulnerability Database Vulnerabilities #VU49553

Input validation error in Junos OS Evolved and Juniper Junos OS - CVE-2021-0211

Published: January 15, 2021


Vulnerability identifier: #VU49553
CSH Severity: Medium
CVSS v4.0: 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-2021-0211
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Juniper Networks, Inc.
Affected software:
Junos OS Evolved
Juniper Junos OS

Detailed vulnerability 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 BGP mesages. A remote attacker can send a valid BGP FlowSpec message and perform a denial of service (DoS) attack.


How to mitigate CVE-2021-0211

Install updates from vendor's website.

Sources