CVE-2021-21937: advantech r-seenet SQL Injection

Vulnerability summary

CVE-2021-21937 is a high (CVSS 7.7) SQL Injection vulnerability in advantech r-seenet. EPSS estimates a 1.21% chance of exploitation in the next 30 days, higher than 68.2% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 22-12-2021
   PublishedVulnerability first disclosed.
2. 03-08-2024
   Last modifiedVulnerability information updated.

Description

A specially-crafted HTTP request can lead to SQL injection. An attacker can make authenticated HTTP requests to trigger this vulnerability at ‘host_alt_filter’ parameter. This can be done as any authenticated user or through cross-site request forgery.

• CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')The product 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. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.