CVE-2023-37899 is a high-severity vulnerability in the Feathersjs framework, which is used for creating web APIs and real-time applications with TypeScript or JavaScript. This vulnerability allows the Feathers socket handler to fail to catch invalid string conversion errors, such as when sending unexpected Socket.io messages. Specifically, the error arises when the message is formatted incorrectly, leading to a crash in the NodeJS process.
The CVSS score for this vulnerability is 7.5, indicating a high severity level. The risk to organizations includes potential service disruptions due to crashes, which could affect availability. Users are urged to upgrade to versions 5.0.8 or 4.5.18, which contain fixes for this issue. Organizations should prioritize patching immediately to mitigate the risks associated with this vulnerability.
Currently, there are no known workarounds for this vulnerability, making immediate remediation critical. Organizations relying on the Feathersjs framework should assess their current implementations and prepare to apply the necessary patches.
Developers utilizing Feathersjs should also review their application logs and user feedback for any signs of abnormal behavior that might indicate attempts to exploit this vulnerability.
For further information on addressing this vulnerability, refer to the release notes for versions 5.0.8 and 4.5.18, which outline the necessary changes.
Vulnerability Details
The vulnerability described in CVE-2023-37899 is classified under CWE-754, which addresses improper checking for exceptional conditions. The specific failure occurs when the socket handler does not properly handle invalid string conversions, leading to unexpected crashes.
The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, indicating that it can be exploited over a network without requiring any privileges or user interaction. The availability impact is rated as high, further emphasizing the significance of this vulnerability.
Technical Analysis
The root cause of CVE-2023-37899 is linked to how the Feathers socket handler processes Socket.io messages. When developers send messages that convert to invalid strings, it results in an unhandled exception that crashes the NodeJS process. This issue has low attack complexity, meaning that it can be easily triggered by an attacker.
No privileges are required to exploit this vulnerability. Furthermore, the attack does not necessitate user interaction, making it particularly dangerous as it can be executed remotely. The impact on availability is significant, as a successful attack can lead to application downtime.
Risk & Impact Analysis
Organizations that utilize the Feathersjs framework are at risk of service disruptions due to this vulnerability. Given the high CVSS score of 7.5, the urgency for patching is critical. The ability for an attacker to cause a crash without needing any special privileges or user interaction increases the potential blast radius significantly.
The vulnerability's impact on availability could lead to significant downtime, affecting user experience and overall service reliability. Organizations should prioritize addressing this vulnerability in their patch cycle to mitigate risks effectively.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The versions of Feathersjs affected by this vulnerability include all versions prior to the following patches: 4.5.18 and 5.0.8. Users should ensure they are running one of these patched versions to mitigate this vulnerability.
Mitigation & Remediation
To mitigate the risks posed by CVE-2023-37899, organizations should immediately upgrade to the patched versions of Feathersjs, specifically 4.5.18 or 5.0.8. If patching is not possible, organizations should review their application code for proper error handling when processing Socket.io messages.
Security testing can further help identify vulnerabilities in applications using Feathersjs.
Detection Guidance
Organizations should monitor application logs for any signs of abnormal behavior or crashes related to Socket.io message handling. Log indicators should include error messages indicating invalid string conversions and unexpected crashes. Behavioral anomalies around Socket.io communications should also be investigated.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2023-37899 highlights the importance of robust error handling in real-time applications. As organizations increasingly rely on frameworks like Feathersjs for web APIs, understanding and mitigating vulnerabilities in such technologies is crucial.
Security teams should implement a penetration testing approach to identify potential vulnerabilities proactively.
Moreover, teams should consider adopting a vulnerability management program to ensure ongoing security assessments and timely remediation.
In conclusion, the lessons learned from this vulnerability reinforce the necessity of continuous security vigilance and proactive measures to protect applications in an increasingly complex threat landscape.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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