CVE-2022-3241

Build App Online <= 1.0.18 - Unauthenticated SQL Injection

2022-12-06 00:00
Donato Di Pasquale

Strategic Overview

Status
Patched in 1.0.19
Affected Plugin
Build App Online
Affected Version
<= 1.0.18
CVSS
9.8Critical
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2022-3241
View all Build App Online vulnerabilities

At a glance

CVE-2022-3241 is a critical-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Build App Online WordPress plugin, affecting versions <= 1.0.18. It carries a CVSS score of 9.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 1.0.19; sites on affected versions should update now. Disclosed December 2022, reported by Donato Di Pasquale.

Vulnerability Overview

The Build App Online plugin for WordPress is vulnerable to SQL Injection via an AJAX action available to unprivileged users in versions up to, and including, 1.0.18 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Reaching this weakness in Build App Online <= 1.0.18 takes no account at all. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For Build App Online the fix is 1.0.19: builds <= 1.0.18 are affected, anything from 1.0.19 onward is not.

Remediation

Update to version 1.0.19, or a newer patched version

How does WordSec protect against this?

Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Build App Online 1.0.19 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-3241https://www.wordfence.com/threat-intel/vulnerabilities/id/f15f85c6-0bba-4bbd-b097-d205b9e0a075https://nvd.nist.gov/vuln/detail/CVE-2022-3241

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C