CVE-2024-33594

7.5 HIGH

📋 TL;DR

This CVE describes a Missing Authorization vulnerability in the Leaky Paywall WordPress plugin that allows unauthenticated users to manipulate subscription prices. Attackers can exploit this to purchase subscriptions at arbitrary prices, potentially for free. All WordPress sites using Leaky Paywall versions up to 4.20.8 are affected.

💻 Affected Systems

Products:
  • Leaky Paywall WordPress Plugin
Versions: n/a through 4.20.8
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: All WordPress installations with Leaky Paywall plugin enabled are vulnerable regardless of configuration.

⚠️ 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.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers purchase premium subscriptions for free, causing significant revenue loss and potentially gaining unauthorized access to paid content.

🟠

Likely Case

Attackers purchase subscriptions at reduced prices, leading to financial loss and undermining the paywall's integrity.

🟢

If Mitigated

With proper authorization checks, only authenticated users with appropriate permissions can modify subscription prices.

🌐 Internet-Facing: HIGH - WordPress sites are typically internet-facing, and the vulnerability requires no authentication.
🏢 Internal Only: LOW - The vulnerability primarily affects public-facing e-commerce functionality.

🎯 Exploit Status

Public PoC: ⚠️ Yes
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

The vulnerability is publicly documented with proof-of-concept details available, making exploitation straightforward.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 4.20.9

Vendor Advisory: https://patchstack.com/database/vulnerability/leaky-paywall/wordpress-leaky-paywall-plugin-4-20-8-price-manipulation-vulnerability

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Leaky Paywall and click 'Update Now'. 4. Verify version is 4.20.9 or higher.

🔧 Temporary Workarounds

Disable Leaky Paywall Plugin

all

Temporarily disable the plugin to prevent exploitation while planning permanent fix.

wp plugin deactivate leaky-paywall

🧯 If You Can't Patch

  • Implement web application firewall (WAF) rules to block price manipulation requests
  • Monitor transaction logs for suspicious price modifications and implement manual review

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel > Plugins > Leaky Paywall version. If version is 4.20.8 or lower, you are vulnerable.

Check Version:

wp plugin list --name=leaky-paywall --field=version

Verify Fix Applied:

Verify Leaky Paywall version is 4.20.9 or higher in WordPress admin panel.

📡 Detection & Monitoring

Log Indicators:

  • Unusual price modifications in transaction logs
  • Multiple subscription purchases at non-standard prices

Network Indicators:

  • HTTP POST requests to price modification endpoints without proper authentication

SIEM Query:

source="wordpress.log" AND ("leaky-paywall" OR "price_modification") AND status=200 AND user="unauthenticated"

🔗 References

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