Critical Vulnerability in Node-Elliptic Package: Signature Verification Flaw
Summary
UBUNTU-CVE-2024-48948: The Elliptic package 6.5.7 for Node.js, in its for ECDSA implementation, does not correctly verify valid signatures if the hash contains at least four leading 0 bytes and when the order of the elliptic curve's base point... Affects node-elliptic versions 6.4.0+dfsg-1. No fix is published. How to fix ↓
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Background
Node-Elliptic is a widely used cryptographic library for Node.js that implements elliptic curve cryptography. It is essential for secure communications and transactions, providing functionalities such as digital signatures and key exchange. However, a recent vulnerability has been identified that affects its ECDSA implementation, potentially compromising the integrity of applications relying on this package.
Vulnerability Detail
The vulnerability, identified as CVE-2024-48948, arises from an anomaly in the ECDSA implementation of the Elliptic package version 6.5.7. It fails to correctly verify valid signatures when the hash contains at least four leading zero bytes, particularly when the order of the elliptic curve's base point is smaller than the hash. This flaw can lead to legitimate signatures being incorrectly flagged as invalid, resulting in failed transactions or communications. The CVSS score for this vulnerability is 4.8, indicating a medium severity level.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, developers can implement additional validation checks in their applications to ensure that signatures are verified correctly, especially when dealing with hashes that may contain leading zero bytes. However, this is not a substitute for applying the official patch.
Conclusion
The Node-Elliptic package has a critical vulnerability that affects its signature verification process, potentially leading to significant issues in applications that utilize it. It is essential to update to the patched version to ensure the integrity of cryptographic operations. Utilizing tools like Vulert can help in monitoring and managing vulnerabilities effectively.
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FAQ
CVE-2024-48948 is a vulnerability in the Node-Elliptic package that affects the ECDSA signature verification process, potentially leading to legitimate signatures being rejected.
If your application relies on the Node-Elliptic package for cryptographic operations, it may incorrectly flag valid signatures as invalid, disrupting transactions and communications.
Versions of Node-Elliptic prior to 6.5.7 are affected by this vulnerability. It is recommended to update to the latest version to mitigate risks.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Simply upload your manifest file like package-lock.json to check for vulnerabilities.
Yes, Vulert provides real-time monitoring for open-source vulnerabilities without requiring code access or installation. You can use their playground to check your application for vulnerabilities.
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