OS Command Injection in Junos OS Evolved - CVE-2021-31357
Published: October 18, 2021
Vulnerability identifier: #VU57415
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-31357
CWE-ID: CWE-78
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation in tcpdump command processing. A local user can pass specially crafted data to the application and execute arbitrary OS commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Junos OS Evolved
How to mitigate CVE-2021-31357
Install updates from vendor's website.
Junos OS Evolved - addressed in versions 20.4R3-S1-EVO, 21.3R1-EVO