CVE-2024-29070
📋 TL;DR
This vulnerability allows session tokens to remain valid after logout, enabling attackers to reuse stolen or previously obtained 'Authorization' tokens to access user data and perform unauthorized actions. It affects all users of affected software versions before 2.1.4 who rely on session-based authentication.
💻 Affected Systems
- Apache software with session-based authentication (specific product name not provided in CVE)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers with stolen session tokens can fully impersonate users indefinitely, accessing sensitive data, performing privileged actions, and maintaining persistent unauthorized access to the system.
Likely Case
Users who log out from shared or public devices leave their sessions vulnerable, allowing subsequent users to access their accounts and data without authentication.
If Mitigated
With proper session invalidation, tokens become useless immediately after logout, limiting exposure to only active sessions that haven't been properly terminated.
🎯 Exploit Status
Exploitation requires obtaining a valid session token through normal login or interception, then reusing it after logout. No technical barriers exist beyond token acquisition.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.1.4
Vendor Advisory: https://lists.apache.org/thread/zslblrz1l0n9t67mqdv42yv75ncfn9zl
Restart Required: Yes
Instructions:
1. Download version 2.1.4 or later from official Apache sources. 2. Backup current installation and configuration. 3. Stop the service. 4. Replace with patched version. 5. Restart the service. 6. Verify functionality.
🔧 Temporary Workarounds
Session timeout enforcement
allConfigure aggressive session timeouts to limit window for token reuse
Configure session timeout to minimum acceptable value in application configuration
Token blacklisting on logout
allImplement server-side token invalidation by maintaining blacklist of logged-out tokens
Implement token revocation mechanism that checks against invalidated tokens database
🧯 If You Can't Patch
- Implement mandatory re-authentication for sensitive operations
- Deploy WAF rules to detect and block suspicious token reuse patterns
🔍 How to Verify
Check if Vulnerable:
1. Log in to application. 2. Capture Authorization token from request headers. 3. Log out. 4. Attempt to use same token in new request. If request succeeds, system is vulnerable.Check Version:
Check application version through admin interface or configuration files; should show 2.1.4 or higher.Verify Fix Applied:
Repeat vulnerable check steps; after logout, token reuse should return authentication error (401/403).📡 Detection & Monitoring
Log Indicators:
- Multiple successful requests with same token spanning logout events
- Token reuse from different IP addresses after logout
Network Indicators:
- Authorization headers being reused in requests after session termination events
SIEM Query:
source="application_logs" AND "Authorization: Bearer" AND event="logout" AND later event with same token value