Input validation error in Junos OS and Junos OS Evolved - CVE-2021-0281
Published: July 20, 2021
Vulnerability identifier: #VU55004
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-0281
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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 BGP Origin Validation is configured with Resource Public Key Infrastructure. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.
Affected software
Junos OS
Junos OS Evolved
Junos OS Evolved
How to mitigate CVE-2021-0281
Install updates from vendor's website.
Junos OS - addressed in versions 17.3R3-S12, 17.4R3-S5, 18.1R3-S13, 18.2R3-S8, 18.3R3-S5, 18.4R2-S8, 18.4R3-S8, 19.1R3-S5, 19.2R3-S2, 19.3R2-S6, 19.3R3-S2, 19.4R2-S4, 19.4R3-S3, 20.1R3, 20.2R3, 20.3R2, 20.4R2, 21.1R1
Junos OS Evolved - update to 20.4R2-S2-EVO
Junos OS Evolved - update to 20.4R2-S2-EVO