CVE-2021-20016 is a vulnerability in SonicWall Sma 500v
Published on February 4, 2021

A SQL-Injection vulnerability in the SonicWall SSLVPN SMA100 product allows a remote unauthenticated attacker to perform SQL query to access username password and other session related information. This vulnerability impacts SMA100 build version 10.x.

Vendor Advisory NVD

Known Exploited Vulnerability

This SonicWall SSL VPN SMA100 SQL Injection Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Allows a remote unauthenticated attacker to perform SQL query to access username password and other session related information in SMA100 build version 10.x.

The following remediation steps are recommended / required by November 17, 2021: Apply updates per vendor instructions.

Vulnerability Analysis

CVE-2021-20016 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. It has the highest possible exploitability rating (3.9). The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.

What is a SQL Injection Vulnerability?

The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.

CVE-2021-20016 has been classified to as a SQL Injection vulnerability or weakness.

Products Associated with CVE-2021-20016

You can be notified by stack.watch whenever vulnerabilities like CVE-2021-20016 are published in these products:

SonicWall Sma 500v

What versions of Sma 500v are vulnerable to CVE-2021-20016?

Each of the following must match for the vulnerability to exist.