CVE-2020-14967 Information

Description

An issue was discovered in the jsrsasign package before 8.0.18 for Node.js. Its RSA PKCS1 v1.5 decryption implementation does not detect ciphertext modification by prepending ‘\0’ bytes to ciphertexts (it decrypts modified ciphertexts without error). An attacker might prepend these bytes with the goal of triggering memory corruption issues.

CVSS Vector

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

Reference

https://github.com/kjur/jsrsasign/issues/439 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

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8