CVE-2020-14966 Information

Description

An issue was discovered in the jsrsasign package through 8.0.18 for Node.js. It allows a malleability in ECDSA signatures by not checking overflows in the length of a sequence and ‘0’ characters appended or prepended to an integer. The modified signatures are verified as valid. This could have a security-relevant impact if an application relied on a single canonical signature.

CVSS Vector

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

Reference

https://github.com/kjur/jsrsasign/issues/437 https://github.com/kjur/jsrsasign/releases/tag/8.0.17 https://github.com/kjur/jsrsasign/releases/tag/8.0.18 https://kjur.github.io/jsrsasign/ https://security.netapp.com/advisory/ntap-20200724-0001/ https://www.npmjs.com/package/jsrsasign

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

7.5