CVE-2021-20021 SonicWall Email Security Improper Privilege Management
Attackers can create administrative accounts via crafted HTTP requests, leading to full system compromise on SonicWall Email Security appliances.
- Exploited in the wild
- Since 3 Nov 2021
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-20021?
CVE-2021-20021 is a critical vulnerability in SonicWall Email Security, published on 9 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the SonicWall Email Security version 10.0.9.x allows an attacker to create an administrative account by sending a crafted HTTP request to the remote host.
Weakness: CWE-269
Which versions are affected by CVE-2021-20021?
It affects 11 products.
Products include Sonicwall Email Security, Sonicwall Email Security Appliance 3300 Firmware, Sonicwall Email Security Appliance 4300 Firmware, Sonicwall Email Security Appliance 5000 Firmware, Sonicwall Email Security Appliance 5050 Firmware, Sonicwall Email Security Appliance 7000 Firmware and 5 more.
How do I fix CVE-2021-20021?
No fix has been published for CVE-2021-20021 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 17 Nov 2021.
Is CVE-2021-20021 being exploited?
Yes. Attackers have exploited CVE-2021-20021 in the wild since at least 3 Nov 2021, including in ransomware campaigns.
Public exploit code: 1 Nuclei template and 1 proofs of concept on GitHub.
Other vulnerabilities in SonicWall Email Security
Sources
Also known as GHSA-qwrf-wf47-mf5j.