SQL injection in SonicWall products - CVE-2021-20016

Detailed vulnerability description

The vulnerability allows a remote attacker to execute arbitrary SQL queries in database.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote non-authenticated attacker can send a specially crafted HTTP request to the SSL-VPN appliance and execute arbitrary SQL commands within the application database.

Successful exploitation of this vulnerability may allow a remote attacker to access usernames, passwords and other session related information.

Note, the vulnerability is being actively exploited in the wild.

How to mitigate CVE-2021-20016

Install update from vendor's website.

The following products are affected:

Physical appliances – SMA 200, SMA 210, SMA 400 and SMA 410.

Virtual appliance – SMA 500v.

Sources

• https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0001
• https://www.sonicwall.com/support/product-notification/urgent-patch-available-for-sma-100-series-10-x-firmware-zero-day-vulnerability-updated-feb-3-2-p-m-cst/210122173415410/