CVE-2024-0260: Engineers Online Portal Auth Bypass Flaw

CVE-2024-0260 Overview

CVE-2024-0260 is a session management vulnerability in SourceCodester Engineers Online Portal 1.0. The flaw resides in the change_password_teacher.php file within the Password Change component. The application fails to invalidate active sessions after a password change, allowing previously issued session tokens to remain valid. Attackers can exploit this remotely without authentication or user interaction. The vulnerability is tracked as VDB-249816 and maps to [CWE-613: Insufficient Session Expiration]. Public disclosure of the exploit details has occurred, increasing the risk of opportunistic exploitation against unpatched deployments.

Critical Impact

Attackers can hijack teacher accounts by reusing session tokens that should have been invalidated after a password change, compromising integrity of the affected portal.

Affected Products

• SourceCodester Engineers Online Portal 1.0
• change_password_teacher.php (Password Change component)
• Deployments referenced by CPE cpe:2.3:a:engineers_online_portal_project:engineers_online_portal:1.0

Discovery Timeline

• 2024-01-07 - CVE-2024-0260 published to NVD
• 2024-11-21 - Last updated in NVD database

Technical Details for CVE-2024-0260

Vulnerability Analysis

The vulnerability stems from improper session lifecycle handling in the teacher password change workflow. When a user updates credentials through change_password_teacher.php, the application does not destroy or rotate the existing session identifier. Any session token issued prior to the password change continues to authorize requests against the account. This breaks a core assumption of credential rotation: that previously issued sessions become invalid once the password changes. The result is an integrity-impacting flaw mapped to [CWE-613]. Although confidentiality and availability are not directly affected, attackers who previously captured a valid session can persist access even after the legitimate user attempts to lock them out by changing the password.

Root Cause

The root cause is missing session invalidation logic in the password change handler. The PHP code path responsible for updating the teacher password does not call session destruction routines such as session_regenerate_id(true) or session_destroy() for other active sessions tied to the same account. Server-side session state therefore remains valid against the new credential context.

Attack Vector

An attacker who has obtained a valid session cookie through phishing, network interception on non-TLS channels, or cross-site scripting can continue to use that cookie after the victim changes their password. The attack is network-reachable, requires no privileges, and needs no user interaction. Because the exploit has been publicly disclosed through VulDB, opportunistic abuse is plausible. The vulnerability described in prose only — no verified proof-of-concept code is published in trusted sources beyond the VulDB and Mega.nz references listed in the advisory.

Detection Methods for CVE-2024-0260

Indicators of Compromise

• Multiple concurrent active sessions for the same teacher account originating from different IP addresses or user agents.
• Successful authenticated requests using a session cookie that pre-dates a recorded password change event.
• Repeated access to change_password_teacher.php followed by continued activity from prior session identifiers.

Detection Strategies

• Correlate password change events with session table state and flag sessions that survive a credential rotation.
• Inspect web server access logs for stale PHPSESSID values continuing to authenticate after a recorded password update.
• Monitor for anomalous geolocation or user-agent shifts on sessions tied to recently rotated accounts.

Monitoring Recommendations

• Enable verbose application logging around authentication and session management functions in the portal.
• Forward web and application logs to a centralized analytics platform for retention and correlation.
• Alert on any case where a session ID remains in use across a password change boundary.

How to Mitigate CVE-2024-0260

Immediate Actions Required

• Force logout of all active sessions for every teacher account in the portal.
• Restrict external access to the Engineers Online Portal until session invalidation logic is patched.
• Audit recent password change events and verify whether prior sessions were reused afterward.

Patch Information

No vendor patch is referenced in the NVD entry or external references for CVE-2024-0260. Operators of SourceCodester Engineers Online Portal 1.0 should monitor the VulDB advisory and the VulDB CTI alert for updates, and consider applying a custom code fix that invalidates all server-side sessions associated with an account upon password change.

Workarounds

• Modify change_password_teacher.php to call session_regenerate_id(true) and destroy all other sessions tied to the user ID after a successful password update.
• Shorten server-side session timeout values to reduce the window for stale token reuse.
• Enforce TLS for all portal traffic to reduce the risk of session cookie capture in transit.
• Require re-authentication for sensitive actions immediately following a password change.

# Configuration example
# Example PHP session hardening to apply in the password change handler
# session_regenerate_id(true);
# session_unset();
# session_destroy();
# Then issue a new session bound to the updated credential context.