A privilege escalation vulnerability exists in Node.js 20 that allowed loading arbitrary OpenSSL engines when the experimental permission model is enabled, which can bypass and/or disable the permission model. The attack complexity is high. However, the crypto.setEngine() API can be used to bypass the permission model when called with a compatible OpenSSL engine. The OpenSSL engine can, for example, disable the permission model in the host process by manipulating the process's stack memory to locate the permission model Permission::enabled_ in the host process's heap memory. Please note that at the time this CVE was issued, the permission model is an experimental feature of Node.js.
With a CVSS score of 7.5, this vulnerability is classified as high severity. The risk to organizations includes potential unauthorized access to sensitive data, as attackers may leverage this flaw to manipulate the permission model, leading to integrity impacts. Organizations should prioritize patching immediately to mitigate risks associated with this vulnerability.
As of now, there are no confirmed public exploits or known exploits for this vulnerability, which indicates that it may not yet be actively targeted by attackers. However, the experimental nature of the permission model and the potential impact of this vulnerability necessitate immediate attention from security teams.
Organizations using Node.js 20 should assess their deployment configurations and apply necessary patches to reduce exposure to this vulnerability.
Vulnerability Details
The vulnerability allows for loading arbitrary OpenSSL engines, effectively bypassing the permission model. The attack vector is network-based, with low complexity and requiring no privileges or user interaction. The integrity impact is high, while confidentiality and availability impacts are noted as none.
Technical Analysis
The root cause of this vulnerability lies in how Node.js handles the experimental permission model. Attackers can exploit the crypto.setEngine() API to manipulate the permission model, potentially leading to unauthorized actions within the application. The attack complexity is classified as high due to the requirement for a compatible OpenSSL engine and sophisticated manipulation of memory.
Given the nature of this vulnerability, it is essential for organizations to understand the attack vector and the conditions under which the vulnerability could be exploited. Monitoring applications for any unauthorized changes to the permission model should be a priority.
Risk & Impact Analysis
Risk to organizations includes potential unauthorized access to sensitive data, which could lead to significant integrity breaches. The blast radius could extend to all applications utilizing Node.js 20 within the organization, making it critical to prioritize patching. Given the high severity of this vulnerability, organizations should address it in priority patch cycles.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected version of Node.js is 20.0.0 through 20.3.0. Organizations are advised to upgrade to the latest version to mitigate this vulnerability.
Mitigation & Remediation
Organizations should apply the latest patches and updates to Node.js immediately. If a patch is not available, consider implementing configuration hardening to restrict the environment in which Node.js operates. Continuous monitoring for unusual behavior or integrity changes in the application is also recommended.
For more information on penetration testing and security assessments, organizations can refer to the penetration testing services offered.
Detection Guidance
Organizations should monitor logs for indicators of abnormal permission model behavior. Behavioral anomalies that may suggest exploitation attempts should be investigated promptly. Network signatures associated with unauthorized access attempts should also be reviewed regularly.
AppSecure Threat Intelligence Insight
This vulnerability highlights the importance of securing experimental features within software frameworks. As organizations increasingly leverage Node.js for critical applications, understanding and mitigating risks associated with its features is essential. Security teams should prioritize continuous security testing and maintain an awareness of vulnerabilities related to the technologies they use.
For further insights, organizations can explore the following resources: penetration testing methodology, vulnerability management program design, and API penetration testing guide for comprehensive strategies.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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