A weakness has been identified in CRMEB up to version 5.6.3. The impacted element is the function remoteRegister of the file crmeb/app/services/user/LoginServices.php of the component JSON Token Handler. Executing a manipulation of the argument uid can lead to improper authentication. The attack may be performed from remote, and it requires a high level of complexity. The exploitability is regarded as difficult, and the exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
The CVSS score for this vulnerability is 2.9, indicating a low severity level. This score reflects potential impacts on confidentiality, integrity, and availability. Although the vulnerability does not require authentication or user interaction, the complexity of the attack is high, making it less likely to be exploited in the wild.
Organizations should assess their risk associated with this vulnerability, particularly if they are using affected versions of CRMEB. Although the exploit is considered difficult, the availability of a public exploit increases the urgency for organizations to review their security posture.
Organizations should prioritize patching immediately.
Vulnerability Details
The official description states that a weakness has been identified in CRMEB up to version 5.6.3. Specifically, the vulnerability is found in the remoteRegister function within the LoginServices.php file, which is part of the JSON Token Handler component. The manipulation of the uid argument can lead to improper authentication. The attack vector is remote, and the complexity is high.
The CVSS score of 2.9 denotes a low severity level, which indicates minimal impact potential. However, it is worth noting that the vulnerability has been made publicly available for exploitation attempts, which could pose risks to organizations if not addressed.
Technical Analysis
The root cause of this vulnerability lies in the improper handling of the uid argument within the remoteRegister function. This oversight allows attackers to bypass authentication by manipulating the input data. The attack vector is network-based, meaning that an attacker does not need physical access to exploit the vulnerability.
The attack complexity is classified as high, which means that an attacker must possess a certain level of skill or knowledge to successfully exploit the vulnerability. No privileges are required to attempt the attack, and user interaction is not necessary.
The impacts of this vulnerability are low concerning confidentiality, integrity, and availability. However, attackers may leverage this weakness to perform unauthorized actions within the affected system.
Risk & Impact Analysis
Risk to organizations includes potential unauthorized access and manipulation of user data due to improper authentication mechanisms. Although the severity is classified as low, the complexity of the exploit and the availability of a public exploit increase the risk profile.
Organizations using affected versions of CRMEB should review their deployment and assess the potential blast radius of this vulnerability. Given the public availability of an exploit, it is crucial to act promptly to mitigate risks.
Organizations should address in priority patch cycle.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to vendor patch.
Mitigation & Remediation
To mitigate this vulnerability, organizations should apply the latest patches provided by CRMEB. If patches are not immediately available, consider implementing workarounds such as input validation to prevent uid manipulation.
For further assistance, organizations can refer to the application security assessment services offered.
Detection Guidance
Monitoring logs for anomalies related to the remoteRegister function can help identify potential exploitation attempts. Look for unusual patterns in the uid input values.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability highlights the importance of secure coding practices, especially within components handling user authentication. Security teams should learn from this incident to enforce stronger input validation mechanisms.
This case also represents a trend where attackers seek to exploit complex authentication mechanisms. Organizations should consider conducting regular security assessments to identify similar weaknesses.
For more insights on securing applications, organizations may explore our penetration testing methodology and related resources.
Additionally, organizations should keep abreast of emerging threats and vulnerabilities through continuous education and training in security best practices.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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