Arbitrary file upload in SMA 100 - CVE-2021-20040
Published: December 7, 2021
Vulnerability identifier: #VU58621
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2021-20040
CWE-ID: CWE-434
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: SonicWall
Affected software:
SMA 100
SMA 100
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to the appliance allows unauthenticated file upload. A remote non-authenticated attacker can send a specially crafted HTTP request to the appliance and upload arbitrary file to any directory on the system.
How to mitigate CVE-2021-20040
Install updates from vendor's website.