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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTl4OWotODM2dy04ZjU1

Incorrect Calculation in the MSR JavaScript Cryptography Library

A Security Feature Bypass vulnerability exists in the MSR JavaScript Cryptography Library that is caused by multiple bugs in the library's Elliptic Curve Cryptography (ECC) implementation.An attacker could potentially abuse these bugs to learn information about a server's private ECC key (a key leakage attack) or craft an invalid ECDSA signature that nevertheless passes as valid.The security update addresses the vulnerability by fixing the bugs disclosed in the ECC implementation, aka MSR JavaScript Cryptography Library Security Feature Bypass Vulnerability.

Permalink: https://github.com/advisories/GHSA-9x9j-836w-8f55
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTl4OWotODM2dy04ZjU1
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 2 years ago
Updated: about 1 year ago

CVSS Score: 9.8
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Identifiers: GHSA-9x9j-836w-8f55, CVE-2020-1026
References:

• https://nvd.nist.gov/vuln/detail/CVE-2020-1026
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1026
• https://github.com/advisories/GHSA-9x9j-836w-8f55

Blast Radius: 28.1

Affected Packages