#VU57356 Unchecked Return Value in Juniper Junos OS and MX Series - CVE-2021-31366
Published: October 14, 2021
Vulnerability identifier: #VU57356
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-31366
CWE-ID: CWE-252
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerable software:
Juniper Junos OS
MX Series
Juniper Junos OS
MX Series
Software vendor:
Juniper Networks, Inc.
Juniper Networks, Inc.
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to unchecked return value in the authd (authentication daemon). A remote attacker on the local network can send a specific username and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.