CVE-2024-38355 is a high-severity vulnerability associated with Socket.IO, an open-source real-time communication framework widely used for building event-based applications. The vulnerability arises when specially crafted Socket.IO packets are processed, leading to uncaught exceptions that can crash the Node.js server process. This issue poses a significant risk to applications relying on Socket.IO, as it could lead to denial of service.
The Common Vulnerability Scoring System (CVSS) score for this vulnerability is 7.3, indicating high severity. This score reflects the potential impact on confidentiality, integrity, and availability, as well as the low attack complexity and lack of required privileges for exploitation. Organizations using affected versions of Socket.IO should address this vulnerability urgently.
This vulnerability allows attackers to send crafted packets that can lead to the termination of the Node.js process, affecting the availability of the application. The Socket.IO team has addressed this issue in version 4.6.2, released in May 2023, and backported the fix to the 2.x branch. Organizations unable to upgrade immediately should implement error event listeners to handle potential exceptions.
Given the potential for service disruption, organizations should prioritize patching immediately. The availability of a public proof of concept (PoC) further underscores the urgency for remediation, as it may facilitate exploitation attempts by malicious actors.
Effective risk management requires understanding the implications of this vulnerability and implementing timely remediation strategies to mitigate associated risks.
Vulnerability Details
The vulnerability, CVE-2024-38355, is attributed to an issue within Socket.IO's handling of specially crafted packets. The official description states: "A specially crafted Socket.IO packet can trigger an uncaught exception on the Socket.IO server, thus killing the Node.js process." This vulnerability is classified under CWE-20 (Improper Input Validation) and CWE-754 (Improper Check for Unusual or Exceptional Conditions).
The CVSS score of 7.3 categorizes this vulnerability as high severity, reflecting its potential impact on availability. The vulnerability's attack vector is classified as NETWORK, with a low attack complexity that does not require any privileges or user interaction. The potential impacts on confidentiality, integrity, and availability are all rated as LOW.
The Socket.IO team has resolved the issue in version 4.6.2, released in May 2023, and backported the fix to version 2.x. Users are strongly encouraged to upgrade their installations to mitigate this vulnerability.
Technical Analysis
The root cause of CVE-2024-38355 lies in the way Socket.IO processes incoming packets. An attacker can craft a malicious packet that triggers an uncaught exception, leading to the termination of the Node.js process. The attack vector is through network communication, specifically targeting Socket.IO's event handling mechanism.
The attack complexity is low, meaning that the vulnerability can be exploited with relative ease. No privileges are required, and user interaction is not necessary for an attacker to execute the exploit. This raises the risk of exploitation, as it can be performed remotely without any special access or permissions.
The impacts of this vulnerability on confidentiality, integrity, and availability are all rated as low. However, the availability impact can be significant, as the exploitation can cause the application to crash, leading to potential service disruptions for users.
Risk & Impact Analysis
Risk to organizations includes potential denial of service due to application crashes. The ability to exploit this vulnerability from the network allows attackers to disrupt services without requiring physical access or advanced skills. Given the high severity score of 7.3, organizations should assess the potential blast radius of this vulnerability within their environments.
The urgency for organizations to address this vulnerability is high. Immediate patching is essential to mitigate risks associated with service disruptions. The low EPS score (0.00136) indicates a relatively low probability of exploitation in the wild; however, the presence of a public PoC elevates the risk level.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
Users are encouraged to upgrade to Socket.IO version 4.6.2 or later, which addresses this vulnerability. If users cannot upgrade, they should implement a listener for the error event to manage uncaught exceptions effectively.
Mitigation & Remediation
To remediate CVE-2024-38355, organizations should prioritize upgrading Socket.IO to version 4.6.2 or a later version to eliminate the vulnerability. If an upgrade is not feasible, implementing a listener for the error event can help catch exceptions and prevent service disruption.
For more information on how to conduct effective remediation, consider engaging in penetration testing to assess application robustness.
Detection Guidance
Organizations should monitor logs for error events related to Socket.IO, specifically looking for uncaught exceptions that may indicate attempts to exploit this vulnerability. Additionally, behavioral anomalies in application performance may signal exploitation attempts.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2024-38355 highlights the need for ongoing vigilance in application security. It represents a broader trend of vulnerabilities arising from inadequate input validation and exception handling in real-time communication frameworks. Security teams should leverage this insight to strengthen their application security practices and ensure robust error handling mechanisms are in place.
For comprehensive security strategies, consider reviewing our resources on penetration testing methodology and vulnerability management programs to enhance defensive capabilities.
Furthermore, engaging in API penetration testing can provide deeper insights into application vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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