CVE-2023-3447
📋 TL;DR
This LDAP injection vulnerability in the Active Directory/LDAP Integration WordPress plugin allows unauthenticated attackers to manipulate LDAP queries by injecting malicious input into username fields. Attackers can potentially extract sensitive information from LDAP directories, including user credentials and organizational data. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- Active Directory Integration / LDAP Integration WordPress plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers extract all LDAP directory data including usernames, passwords, email addresses, organizational structure, and sensitive user attributes, leading to complete directory compromise and credential theft.
Likely Case
Attackers extract limited user information and directory structure, enabling targeted attacks, credential harvesting, and reconnaissance for further exploitation.
If Mitigated
Attackers can only extract minimal public directory information if proper input validation and LDAP query restrictions are in place.
🎯 Exploit Status
LDAP injection vulnerabilities are well-understood attack vectors with readily available exploitation techniques in the security community.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.1.6 and later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Active Directory Integration / LDAP Integration'. 4. Click 'Update Now' if available. 5. If no update shows, download version 4.1.6+ from WordPress.org and manually update.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate ldap-login-for-intranet-sites
Implement WAF Rules
allAdd web application firewall rules to block LDAP injection patterns
ModSecurity: SecRule ARGS "@rx \(|\||&|!" "id:1001,phase:2,deny,msg:'LDAP Injection Attempt'"
Cloudflare WAF: Create rule to block requests containing LDAP special characters in username parameters
🧯 If You Can't Patch
- Implement strict input validation to sanitize all username inputs before LDAP queries
- Configure LDAP bind account with minimal read permissions to limit data exposure
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins → Active Directory Integration / LDAP Integration → Version numberCheck Version:
wp plugin get ldap-login-for-intranet-sites --field=versionVerify Fix Applied:
Verify plugin version is 4.1.6 or higher in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual LDAP query patterns in WordPress logs
- Multiple failed login attempts with special characters in username field
- LDAP error messages containing injection characters
Network Indicators:
- HTTP requests to login endpoints containing LDAP special characters like (, ), |, &, ! in username parameters
- Unusual volume of LDAP queries from single source
SIEM Query:
source="wordpress.log" AND ("ldap" OR "adsi") AND ("(" OR ")" OR "|" OR "&") AND username=*🔗 References
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2928150%40ldap-login-for-intranet-sites&new=2928150%40ldap-login-for-intranet-sites&sfp_email=&sfph_mail=
- https://www.wordfence.com/threat-intel/vulnerabilities/id/cd7553e8-e43d-4740-b2ee-e3d8dc351e53?source=cve
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2928150%40ldap-login-for-intranet-sites&new=2928150%40ldap-login-for-intranet-sites&sfp_email=&sfph_mail=
- https://www.wordfence.com/threat-intel/vulnerabilities/id/cd7553e8-e43d-4740-b2ee-e3d8dc351e53?source=cve
