Unintended Proxy or Intermediary in SMA 100 - CVE-2021-20042
Published: December 7, 2021
Vulnerability identifier: #VU58623
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2021-20042
CWE-ID: CWE-441
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 bypass implemented security restrictions.
The vulnerability exists due to missing security checks that allow a remote non-authenticated attacker to bypass firewall rules and use undetected the appliance as intermediary proxy to access internal and external resources.
How to mitigate CVE-2021-20042
Install updates from vendor's website.