CVE-2024-21907 is a high-severity vulnerability affecting Newtonsoft.Json versions prior to 13.0.1. This vulnerability allows for a mishandling of exceptional conditions, where crafted data passed to the JsonConvert.DeserializeObject method may trigger a StackOverflow exception. The result can be a denial of service (DoS) condition, which poses a significant risk to applications utilizing this library.
The CVSS score of 7.5 categorizes this vulnerability as high severity, emphasizing its importance in security management. Organizations that rely on Newtonsoft.Json need to be aware of this risk, as an unauthenticated and remote attacker could exploit the vulnerability to disrupt service availability.
Currently, there is no known public exploit for this vulnerability, but the exploitability score of 3.9 suggests a high likelihood of attempts to leverage it. Therefore, organizations should prioritize patching immediately.
Given the potential for denial of service, it is crucial for organizations to assess their usage of the Newtonsoft.Json library and implement the necessary updates to mitigate this vulnerability.
Vulnerability Details
The vulnerability described by CVE-2024-21907 involves a mishandling of exceptional conditions in Newtonsoft.Json, specifically affecting versions before 13.0.1. The library's JsonConvert.DeserializeObject method can trigger a StackOverflow exception under certain conditions, leading to a denial of service.
This issue falls under the CWE-755 classification, indicating improper handling of exceptional conditions. With a CVSS score of 7.5, the severity is categorized as high due to its potential impact on availability.
The vulnerability was published on January 3, 2024, and remains classified as modified, highlighting ongoing updates regarding its status and potential impacts.
Technical Analysis
The root cause of this vulnerability lies in the way the Newtonsoft.Json library processes data during deserialization. Specifically, crafted data can lead to excessive recursion, causing a StackOverflow exception. The attack vector is network-based, requiring no authentication or user interaction, thus making it easier for attackers to exploit.
The attack complexity is rated as low, meaning that even individuals with minimal technical knowledge can potentially exploit this vulnerability. No privileges are required to initiate the attack, further increasing its risk profile.
The impacts on confidentiality and integrity are rated as none, but availability impact is classified as high, given that successful exploitation can lead to complete service downtime.
Risk & Impact Analysis
Organizations utilizing Newtonsoft.Json should assess their risk exposure due to this vulnerability. The potential for an attacker to trigger a denial of service condition poses significant operational challenges, especially for applications relying on this library for JSON parsing.
The blast radius of this vulnerability can vary based on how widely the library is used within an organization. If integrated into critical systems or applications, the impact of a DoS attack could result in significant downtime and loss of service availability.
Given the CVSS score and the absence of any known public exploits, organizations should still consider this vulnerability a priority to address in their patch management cycles. The urgency for remediation is high and should be treated accordingly.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of Newtonsoft.Json prior to 13.0.1 are affected by this vulnerability. Organizations are advised to update to the latest version to mitigate the risks associated with this vulnerability.
Mitigation & Remediation
To remediate this vulnerability, organizations should upgrade to Newtonsoft.Json version 13.0.1 or later. If immediate upgrading is not possible, consider implementing workarounds such as validating incoming data to prevent crafted payloads from being processed.
Additionally, organizations may implement network controls to limit external access to services utilizing Newtonsoft.Json. Monitoring of application logs for unusual behavior can also help identify potential exploitation attempts.
Penetration testing can also be beneficial in validating the effectiveness of the remediation efforts.
Detection Guidance
Organizations should monitor for StackOverflow exceptions in their application logs as an indicator of potential exploitation attempts. Additionally, behavioral anomalies such as unexpected service downtime should be investigated thoroughly.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2024-21907 lies in its representation of a broader trend in software vulnerabilities. Mismanagement of exceptional conditions continues to be a common oversight in application development, leading to critical availability risks.
This vulnerability serves as a reminder for security teams to implement rigorous input validation and error handling practices during the development and testing phases.
To further enhance security posture, organizations should adopt a comprehensive vulnerability management program that emphasizes proactive measures against known vulnerabilities.
Finally, security teams should consider leveraging penetration testing methodologies to identify similar weaknesses in their applications.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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