CVE-2022-35255 is a critical vulnerability affecting Node.js 18, caused by weak randomness in the WebCrypto key generation process. This issue arises from a change with the EntropySource() function in the SecretKeyGenTraits::DoKeyGen() method within the Node.js source code. The vulnerability poses significant risks, as it does not verify the return value of the EntropySource() function, which can fail. Furthermore, the random data returned may not be cryptographically strong, making it unsuitable for use as keying material.
The severity of this vulnerability is classified as critical, with a CVSS score of 9.1. Given the potential for attackers to exploit this weakness, organizations should prioritize patching immediately. The implications include high risks to confidentiality and integrity, as attackers may leverage this vulnerability to compromise sensitive data.
Currently, there is no public exploit confirmed for this vulnerability, and it is not included in the Known Exploited Vulnerabilities (KEV) catalog. However, the risk to organizations remains substantial, especially when considering that weak randomness can lead to predictable cryptographic keys, making it easier for attackers to gain unauthorized access.
Given the critical nature of this vulnerability, organizations utilizing affected versions of Node.js, Siemens SINEC, or Debian Linux should address this issue in their patch cycles. The urgency for defending against this vulnerability cannot be overstated.
Vulnerability Details
The official CVE description states that this vulnerability allows for weak randomness in WebCrypto key generation. The vulnerability is classified under CWE-338, which pertains to weak cryptographic key generation.
The CVSS score of 9.1 indicates a critical severity level, with high impact on confidentiality and integrity. The affected product is Node.js, specifically versions 15.0.0 to 15.14.0, 16.0.0 to 16.12.0, and 18.0.0 to 18.9.1, as well as the Siemens SINEC and Debian Linux 11.0.
Technical Analysis
The root cause of this vulnerability lies in the implementation of the EntropySource() function, which fails to validate its return value. This oversight allows for the possibility that the function may return weak random data, leading to the generation of cryptographic keys that could potentially be predicted by attackers.
The attack vector is network-based, with low complexity. No privileges are required for exploitation, and user interaction is not necessary. The potential impacts include high confidentiality and integrity risks, but no impact on availability.
Risk & Impact Analysis
The real-world risk associated with CVE-2022-35255 is significant, especially for organizations using Node.js in critical applications. The possibility of generating predictable cryptographic keys can lead to unauthorized access and data breaches, significantly compromising an organization's security posture. This vulnerability affects multiple platforms including Node.js, Siemens SINEC, and Debian Linux, broadening the potential impact across various sectors.
The urgency for remediation is high, given the critical CVSS score and the potential for exploitation. Organizations should consider this vulnerability a priority in their patch management processes.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The following versions of Node.js and related components are affected by this vulnerability: Node.js versions 15.0.0 through 15.14.0, 16.0.0 through 16.12.0, and 18.0.0 through 18.9.1. Additionally, Siemens SINEC versions prior to 1.0 and Debian Linux 11.0 are also vulnerable.
Mitigation & Remediation
Organizations should apply the latest patches to their Node.js installations to remediate this vulnerability. Following updates, it is crucial to validate the effectiveness of the remediation through penetration testing to ensure that no weaknesses remain. Configuration hardening and network controls should also be implemented to mitigate potential risks.
Detection Guidance
Security teams should monitor logs for any anomalies related to cryptographic operations. Behavioral indicators of compromise may include unauthorized access attempts using weak keys. Implementing network signatures to detect unusual traffic patterns can also be beneficial.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2022-35255 highlights the ongoing challenges in cryptographic implementations. Security teams must learn from this incident to improve their key generation processes. For further insights, organizations can refer to our resources on penetration testing methodology and the importance of robust security practices. Additionally, reviewing trends in vulnerabilities can aid in proactively addressing future risks.
Organizations are encouraged to stay updated on security advisories and to engage in continuous security assessments to adapt to the evolving threat landscape.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
.webp)