CVE-2019-25503
📋 TL;DR
CVE-2019-25503 is an unauthenticated SQL injection vulnerability in PHPads 2.0 that allows attackers to execute arbitrary SQL queries through the bannerID parameter in click.php3. This enables extraction of sensitive database information like database names, potentially leading to full database compromise. All users running PHPads 2.0 are affected.
💻 Affected Systems
- PHPads
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including data theft, data manipulation, and potential server takeover via SQL injection leading to remote code execution.
Likely Case
Database information disclosure including database names, table structures, and potentially sensitive application data.
If Mitigated
Limited impact with proper input validation and parameterized queries preventing SQL injection.
🎯 Exploit Status
Public exploit available on Exploit-DB (46798) with working proof-of-concept. Simple SQL injection using bannerID parameter.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: N/A
Vendor Advisory: N/A
Restart Required: No
Instructions:
No official patch available. PHPads appears to be abandoned software. Recommended to migrate to supported alternative or implement workarounds.
🔧 Temporary Workarounds
Input Validation and Sanitization
allAdd input validation to bannerID parameter to only accept expected values
Edit click.php3 to add: if(!is_numeric($_GET['bannerID'])) { die('Invalid input'); }
Parameterized Query Implementation
allReplace direct SQL concatenation with prepared statements
Replace vulnerable SQL with: $stmt = $pdo->prepare('SELECT * FROM banners WHERE bannerID = ?'); $stmt->execute([$bannerID]);
🧯 If You Can't Patch
- Implement web application firewall (WAF) with SQL injection rules
- Restrict access to click.php3 via network controls or authentication
🔍 How to Verify
Check if Vulnerable:
Test with payload: /click.php3?bannerID=1' AND extractvalue(1,concat(0x7e,(SELECT database())))--Check Version:
Check PHPads version in admin interface or readme filesVerify Fix Applied:
Test same payload after fix - should return error page or sanitized response without database information📡 Detection & Monitoring
Log Indicators:
- HTTP requests to click.php3 with SQL keywords in bannerID parameter
- Database error logs showing SQL syntax errors
Network Indicators:
- HTTP requests containing SQL injection patterns like extractvalue, concat, or comment syntax
SIEM Query:
source="web_logs" AND uri="*click.php3*" AND (bannerID="*'*" OR bannerID="*extractvalue*" OR bannerID="*--*" OR bannerID="*/*")