Sensitive Data Exposure in msrcrypto

KRITISCH 9.8CVE-2018-8319 · GHSA-qg3g-2mgh-33j8 · Published 11/07/2018 · updated 17/06/2026

Kurz gesagt

CVE-2018-8319 ist eine Schwachstelle (KRITISCH (CVSS 9.8)) in research javascript cryptography library (microsoft), msrcrypto.
Wahrscheinlichkeit einer Ausnutzung in den nächsten 30 Tagen (EPSS): 7.7%, höher als bei 94.6% aller Schwachstellen.
Abhilfe: auf 1.4.1 oder neuer aktualisieren.

Package	Affected versions	Patched versions
research javascript cryptography library microsoft	`= 1.4`	No fix yet
msrcrypto npm	`< 1.4.1`	`1.4.1`

Description

Versions of msrcrypto prior to 1.4.1 are vulnerable to Sensitive Data Exposure. The package's Elliptic Curve Cryptography (ECC) implementation may leak information about a server's private ECC key. It can also allow attackers to craft invalid ECDSA signatures that pass as valid. There is no published proof-of-concept for this vulnerability.

Recommendation

Upgrade to version 1.4.1 or later.

NVD description

A Security Feature Bypass vulnerability exists in MSR JavaScript Cryptography Library that is caused by incorrect arithmetic computations, aka "MSR JavaScript Cryptography Library Security Feature Bypass Vulnerability." This affects Microsoft Research JavaScript Cryptography Library.

References

nvd.nist.gov/vuln/detail/CVE-2018-8319 · ADVISORY
GitHub Advisory GHSA-qg3g-2mgh-33j8 · ADVISORY
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8319 · WEB
npmjs.com/advisories/1112 · WEB
securityfocus.com/bid/104655 · WEB
securitytracker.com/id/1041268 · WEB

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Package

Affected versions

Patched versions

research javascript cryptography library

microsoft

= 1.4

No fix yet

msrcrypto

npm

< 1.4.1

1.4.1

Description

Recommendation

Upgrade to version 1.4.1 or later.

NVD description