PT-2020-2276 · Microsoft · Msr Javascript Cryptography Library

Published 2020-04-14 · Updated 2022-01-06 · CVE-2020-1026

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions MSR JavaScript Cryptography Library (affected versions not specified)

Description A security issue exists in the MSR JavaScript Cryptography Library due to multiple bugs in its Elliptic Curve Cryptography (ECC) implementation. This could allow an attacker to potentially learn information about a server's private ECC key or craft an invalid ECDSA signature that passes as valid. The issue is related to incorrect calculations in the ECC implementation, which could enable a remote attacker to gain unauthorized access to protected information.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Verification of Cryptographic Signature

Information Disclosure

Weakness Enumeration

CWE-347

CWE-200

CWE-682

Related Identifiers

BDU:2020-02219

CVE-2020-1026

GHSA-9X9J-836W-8F55

Affected Products

Msr Javascript Cryptography Library

References · 5

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1026 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-1026 · Security Note
• https://osv.dev/vulnerability/CVE-2020-1026 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-9x9j-836w-8f55 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-02219 · Security Note