Quttera Web Malware Scanner <= 3.4.1.48 - Authenticated (Administrator+) Directory Traversal via ShowFile
Strategic Overview
- Status
- Patched in 3.4.2.1
- Affected Plugin
- Quttera ThreatSign – Web Malware Scanner for WordPress
- Affected Version
<= 3.4.1.48- CVSS
- 6.8Medium
- Weakness type
- CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
- CVE
CVE-2023-6222
At a glance
CVE-2023-6222 is a medium-severity Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in the Quttera ThreatSign WordPress plugin, affecting versions <= 3.4.1.48. It carries a CVSS score of 6.8 (reachable over the network; low attack complexity; high confidentiality impact). Exploitation requires an authenticated account at Administrator level or above. The issue is fixed in version 3.4.2.1; sites on affected versions should update now. Disclosed November 2023, reported by Dmitrii Ignatyev.
Vulnerability Overview
The Quttera Web Malware Scanner plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 3.4.1.48 via the ShowFile function. This allows an administrator to view arbitrary files on the server.
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 interaction from a victim user. A successful exploit has high impact on confidentiality.
CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Reaching this weakness in Quttera ThreatSign <= 3.4.1.48 takes an account at Administrator level or above. Path traversal happens when user-controlled text is used to build a filesystem path without being constrained to an intended directory, so sequences like ../ walk the resolved path somewhere else.
Depending on the operation, it means reading files outside the intended folder — wp-config.php being the usual target — or writing to and deleting paths the web server can touch. For Quttera ThreatSign the fix is 3.4.2.1: builds <= 3.4.1.48 are affected, anything from 3.4.2.1 onward is not.
Remediation
Update to version 3.4.2.1, or a newer patched version
How does WordSec protect against this?
An attacker needs Administrator access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Quttera ThreatSign 3.4.2.1 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Other vulnerabilities in Quttera ThreatSign – Web Malware Scanner for WordPress
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