CVE-2024-38755: DirectoryPress SQL Injection Vulnerability

CVE-2024-38755 Overview

CVE-2024-38755 is a SQL Injection vulnerability affecting the Designinvento DirectoryPress plugin for WordPress. The flaw exists in versions up to and including 3.6.10 and stems from improper neutralization of special elements used in SQL commands [CWE-89]. An authenticated attacker with low privileges can send crafted input to inject arbitrary SQL statements into backend database queries. Successful exploitation compromises confidentiality, integrity, and availability of the WordPress database. The vulnerability was published to the National Vulnerability Database (NVD) on July 22, 2024.

Critical Impact
Authenticated attackers can execute arbitrary SQL queries against the WordPress database, exposing user data, modifying records, and potentially escalating to full site compromise.

Affected Products

Designinvento DirectoryPress WordPress plugin, all versions from initial release through 3.6.10
WordPress sites running DirectoryPress as a directory listing solution
Environments where low-privileged authenticated users can access DirectoryPress functionality

Discovery Timeline

2024-07-22 - CVE-2024-38755 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-38755

Vulnerability Analysis

The vulnerability is a classic SQL injection flaw [CWE-89] in the DirectoryPress plugin. User-supplied input reaches SQL query construction without proper sanitization or parameterization. Attackers with valid low-privilege credentials can manipulate query logic by injecting SQL syntax into vulnerable parameters. The impact spans confidentiality, integrity, and availability because arbitrary queries can read sensitive tables, modify records, or trigger database errors.

WordPress databases contain user credentials, session data, and site configuration. A successful injection can extract password hashes, escalate privileges through row updates, or plant malicious content in posts and options tables. The attack requires network access to the WordPress site and authenticated session context.

Root Cause

The root cause is improper neutralization of special characters in SQL statements. DirectoryPress builds queries by concatenating user input rather than using prepared statements with parameter binding through the WordPress $wpdb->prepare() API. Escape functions such as esc_sql() are either missing or applied inconsistently. This design allows quote characters, comment sequences, and SQL keywords to break out of the intended query structure.

Attack Vector

Exploitation occurs over the network against the WordPress HTTP interface. The attacker authenticates as a low-privilege user, then submits crafted parameters to a DirectoryPress endpoint. The malicious payload alters the SQL query executed by the plugin. Common techniques include UNION-based extraction, boolean-based blind injection, and time-based blind injection using functions such as SLEEP(). See the Patchstack SQL Injection Analysis for advisory details.

Detection Methods for CVE-2024-38755

Indicators of Compromise

Unexpected SQL syntax in HTTP request parameters directed at DirectoryPress endpoints, including UNION SELECT, OR 1=1, or SQL comment sequences
Anomalous database query patterns or error messages in WordPress logs referencing DirectoryPress tables
Unauthorized modifications to wp_users, wp_usermeta, or DirectoryPress listing tables
Outbound data transfers from the web server that correlate with authenticated DirectoryPress sessions

Detection Strategies

Deploy a web application firewall (WAF) with signatures for SQL injection targeting WordPress plugin endpoints
Enable MySQL general query logging temporarily to identify malformed or suspicious queries originating from DirectoryPress
Correlate WordPress access logs with database error logs to identify probing attempts by authenticated users
Monitor plugin request parameters for encoded payloads, tautologies, and time-delay functions

Monitoring Recommendations

Alert on repeated authenticated requests to DirectoryPress endpoints containing SQL metacharacters
Track privilege changes and new administrator accounts created outside change control windows
Baseline normal query volume for DirectoryPress tables and alert on sudden increases
Retain WordPress and web server logs for at least 90 days to support post-incident analysis

How to Mitigate CVE-2024-38755

Immediate Actions Required

Update Designinvento DirectoryPress to a version later than 3.6.10 as soon as the vendor publishes a fixed release
Audit all WordPress user accounts and remove or downgrade unnecessary low-privilege accounts that could exploit the flaw
Review database logs for evidence of prior exploitation, focusing on unusual query patterns since July 2024
Rotate database credentials and WordPress secret keys if compromise is suspected

Patch Information

The vendor advisory referenced by Patchstack indicates the vulnerability affects DirectoryPress through version 3.6.10. Administrators should consult the Patchstack SQL Injection Analysis and the Designinvento product page for the current patched release. Apply the update in a staging environment before production rollout.

Workarounds

Restrict access to DirectoryPress functionality using WordPress role management until a patch is applied
Deploy WAF rules that block SQL injection patterns targeting DirectoryPress request parameters
Disable the DirectoryPress plugin if it is not business-critical until a fixed version is available
Enforce least privilege on the WordPress database user to limit the impact of successful injection

bash

# Example WAF rule concept for blocking SQL injection patterns on DirectoryPress endpoints
# ModSecurity rule example
SecRule REQUEST_URI "@contains /wp-admin/admin-ajax.php" \
  "chain,phase:2,deny,status:403,id:1003875,\
   msg:'Potential SQLi against DirectoryPress'"
  SecRule ARGS "@rx (?i)(union(\s|\+)+select|or(\s|\+)+1=1|sleep\s*\(|benchmark\s*\()" \
    "t:none,t:urlDecodeUni"