CVE-2024-23648 – This vulnerability in Pimcore's Admin Classic B... (How to Fix)

Q: What is the severity of CVE-2024-23648?

CVE-2024-23648 has a CVSS score of 8.8 (HIGH). This vulnerability in Pimcore's Admin Classic Bundle allows attackers to perform account takeover by manipulating password reset emails. Attackers can send password reset requests with a malicious Host header, causing reset links to point to attacker-controlled domains where tokens can be captured. All users of affected versions are vulnerable to this attack.

📋 TL;DR

This vulnerability in Pimcore's Admin Classic Bundle allows attackers to perform account takeover by manipulating password reset emails. Attackers can send password reset requests with a malicious Host header, causing reset links to point to attacker-controlled domains where tokens can be captured. All users of affected versions are vulnerable to this attack.

💻 Affected Systems

Products:

Pimcore Admin Classic Bundle

Versions: All versions prior to 1.2.3

Operating Systems: All

Default Config Vulnerable: ⚠️ Yes

Notes: Affects all installations using the password reset functionality. No special configuration required.

📦 What is this software?

Admin Classic Bundle by Pimcore

View all CVEs affecting Admin Classic Bundle →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete account takeover of any user, including administrators, leading to data theft, privilege escalation, and potential system compromise.

🟠

Likely Case

Targeted account takeover of specific users through phishing-style attacks, resulting in unauthorized access to sensitive data and functionality.

🟢

If Mitigated

No impact if proper email validation and host header verification are implemented, or if users don't click malicious links.

🌐 Internet-Facing: HIGH

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: LIKELY

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

Exploitation requires user interaction (clicking email link) but is straightforward for attackers to implement.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 1.2.3

Vendor Advisory: https://github.com/pimcore/admin-ui-classic-bundle/security/advisories/GHSA-mrqg-mwh7-q94j

Restart Required: No

Instructions:

1. Update Pimcore Admin Classic Bundle to version 1.2.3 or later. 2. Verify the update using composer update pimcore/admin-ui-classic-bundle. 3. Clear any caches if applicable.

🔧 Temporary Workarounds

Host Header Validation

all

Implement server-side validation to reject requests with unexpected Host headers

Configure web server (Apache/Nginx) to validate Host headers against allowed domains

Disable Password Reset

all

Temporarily disable password reset functionality until patched

Modify application configuration to disable password reset endpoints

🧯 If You Can't Patch

Implement WAF rules to block requests with suspicious Host headers
Monitor for unusual password reset requests and implement rate limiting

🔍 How to Verify

Check if Vulnerable:

Check if Pimcore Admin Classic Bundle version is below 1.2.3 using composer show pimcore/admin-ui-classic-bundle

Check Version:

composer show pimcore/admin-ui-classic-bundle | grep versions

Verify Fix Applied:

Confirm version is 1.2.3 or higher and test password reset functionality with various Host headers

📡 Detection & Monitoring

Log Indicators:

Multiple password reset requests for same user from different IPs
Requests with unusual Host headers in access logs

Network Indicators:

Unusual patterns of password reset email generation
Requests to password reset endpoint with modified Host headers

SIEM Query:

source="web_logs" AND (uri="/admin/reset-password" OR uri="/password-reset") AND (host_header!="expected-domain.com" OR host_header CONTAINS "attacker-domain")

📊 Metadata

CVE ID: CVE-2024-23648

CVSS v3 Score: 8.8 (HIGH)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE: CWE-74

Published: January 24, 2024

Last Updated: November 21, 2024

🔗 References

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