A security flaw has been discovered in Chamilo LMS up to 2.0.0 Beta 1. This issue affects the function deleteLegal of the file src/CoreBundle/Controller/SocialController.php of the component Legal Consent Handler. Performing a manipulation of the argument userId results in improper authorization. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
This vulnerability allows attackers to perform unauthorized actions that could compromise user data and system integrity. The CVSS score of 2.1 indicates a low severity level, yet the potential for remote exploitation necessitates immediate attention from affected organizations.
Risk to organizations includes unauthorized access to sensitive information and potential data manipulation. Organizations should prioritize patching immediately to mitigate risks associated with this vulnerability.
Despite the low severity, the existence of public exploits means organizations must take this vulnerability seriously and address it promptly.
Vulnerability Details
A security flaw has been discovered in Chamilo LMS up to version 2.0.0 Beta 1. The vulnerability affects the function deleteLegal in the file src/CoreBundle/Controller/SocialController.php. Manipulation of the argument userId can lead to improper authorization. The flaw is remotely exploitable.
The CVSS score of 2.1 indicates a low severity level, while the CVSS vector shows that the attack vector is network-based, requiring low complexity and low privileges for exploitation. The issue has been cataloged under CWE-266 (Incorrect Privilege Assignment) and CWE-285 (Improper Authorization).
Technical Analysis
The root cause of this vulnerability lies in the improper handling of user input within the deleteLegal function. An attacker can manipulate the userId argument to gain unauthorized access to sensitive functions within the application.
The attack vector for this vulnerability is network-based, allowing remote exploitation without any need for user interaction. The attack complexity is low, as the attacker requires only low privileges to exploit the vulnerability.
The impact on confidentiality is none, while integrity and availability impacts are classified as low. This indicates that while the attacker cannot access confidential data, they can manipulate existing data and potentially disrupt service availability.
Risk & Impact Analysis
The real-world deployment risk associated with this vulnerability stems from its remote exploitability and the existence of public exploits. While the CVSS score indicates a low severity, the potential for unauthorized access to sensitive functions poses a significant risk.
This matters to organizations as it could lead to unauthorized actions being performed on their systems, possibly affecting user trust and regulatory compliance. The blast radius includes any system utilizing Chamilo LMS up to version 2.0.0 Beta 1.
Organizations should address this vulnerability during their priority patch cycle to prevent exploitation. The CVSS score and the low exploitability indicate that while the urgency is lower than more critical vulnerabilities, it should not be overlooked.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of Chamilo LMS include all versions prior to 2.0.0 Beta 1, specifically:
1. Chamilo LMS 2.0.0 Alpha 1 2. Chamilo LMS 2.0.0 Alpha 2 3. Chamilo LMS 2.0.0 Alpha 3 4. Chamilo LMS 2.0.0 Alpha 4 5. Chamilo LMS 2.0.0 Alpha 5 6. Chamilo LMS 2.0.0 Beta 1
Mitigation & Remediation
Organizations should prioritize patching immediately. The vendor has not provided a response regarding remediation. It is recommended to check for updates on the Chamilo LMS website for any patches or updates.
If a patch is not available, organizations should consider implementing workarounds such as restricting access to the affected function or enhancing logging to detect any unauthorized access attempts.
Detection Guidance
To detect potential exploitation attempts, organizations should monitor logs for unusual access patterns to the deleteLegal function. Behavioral anomalies, such as repeated unauthorized access attempts with different user IDs, should be flagged for further investigation.
Network signatures that indicate exploitation attempts should also be developed to enhance defensive capabilities.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability highlights the need for continuous monitoring of software security. Organizations must learn from this incident to improve their defensive strategies.
The pattern of vulnerabilities being discovered in widely used software underscores the importance of implementing security best practices during the software development lifecycle.
Security teams should consider adopting a proactive approach to security testing, such as regular penetration testing and vulnerability assessments, to identify and remediate potential weaknesses before they can be exploited.
For more information on implementing effective security measures, organizations can refer to resources on application security assessment and penetration testing methodology.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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