CVE-2018-8319: Sensitive Data Exposure in msrcrypto
Summary
CVE-2018-8319: Sensitive Data Exposure in msrcrypto. Affects msrcrypto versions < 1.4.1. Fixed in 1.4.1. How to fix ↓
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Background
msrcrypto is an npm package that provides cryptographic functionality for Microsoft Edge. It includes implementations of various cryptographic algorithms, including Elliptic Curve Cryptography (ECC). ECC is used for secure key exchange and digital signatures. However, versions of msrcrypto prior to 1.4.1 are vulnerable to a sensitive data exposure issue in its ECC implementation.
Vulnerability Detail
The vulnerability in msrcrypto allows an attacker to obtain sensitive information about a server's private ECC key. This can lead to unauthorized access, data theft, and other malicious activities. Additionally, the vulnerability enables attackers to craft invalid ECDSA signatures that can pass as valid, compromising the integrity and authenticity of cryptographic operations. It is important to note that there is no published proof-of-concept for this vulnerability at the moment.
How To Fix
Latest published version: 1.5.8 as of 23 Oct 2026
npm install msrcrypto@1.5.8Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
1.4.1
This is the first release that contains the fix.
npm install msrcrypto@1.4.1Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Conclusion
The vulnerability in msrcrypto prior to version 1.4.1 exposes sensitive data and allows for the generation of invalid ECDSA signatures. To mitigate this risk, it is crucial to update to the latest version of the package. For further support and assistance in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for msrcrypto →
FAQ
msrcrypto is an npm package that provides cryptographic functionality for Microsoft Edge. It includes implementations of various cryptographic algorithms, such as ECC.
The vulnerability allows attackers to obtain a server's private ECC key and craft invalid ECDSA signatures, compromising the confidentiality, integrity, and authenticity of cryptographic operations.
No, there is currently no published proof-of-concept for this vulnerability.
To fix this vulnerability, upgrade to version 1.4.1 or later of the msrcrypto package.
No, there are no known workarounds for this vulnerability. Upgrading to the fixed version is the recommended solution.
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