CVE-2020-14968

9.8 CRITICAL
Published: June 22, 2020 Modified: June 22, 2026
View on NVD

Description

An issue was discovered in the jsrsasign package before 8.0.17 for Node.js. Its RSASSA-PSS (RSA-PSS) implementation does not detect signature manipulation/modification by prepending '\0' bytes to a signature (it accepts these modified signatures as valid). An attacker can abuse this behavior in an application by creating multiple valid signatures where only one signature should exist. Also, an attacker might prepend these bytes with the goal of triggering memory corruption issues.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/kjur/jsrsasign/issues/438
Source: cve@mitre.org
Exploit Issue Tracking Third Party Advisory
https://github.com/kjur/jsrsasign/releases/tag/8.0.17
Source: cve@mitre.org
Release Notes Third Party Advisory
https://github.com/kjur/jsrsasign/releases/tag/8.0.18
Source: cve@mitre.org
Release Notes Third Party Advisory
https://kjur.github.io/jsrsasign/
Source: cve@mitre.org
Release Notes Third Party Advisory
https://security.netapp.com/advisory/ntap-20200724-0001/
Source: cve@mitre.org
Third Party Advisory
https://www.npmjs.com/package/jsrsasign
Source: cve@mitre.org
Product Third Party Advisory
https://github.com/kjur/jsrsasign/issues/438
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Issue Tracking Third Party Advisory
https://github.com/kjur/jsrsasign/releases/tag/8.0.17
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes Third Party Advisory
https://github.com/kjur/jsrsasign/releases/tag/8.0.18
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes Third Party Advisory
https://kjur.github.io/jsrsasign/
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes Third Party Advisory
https://security.netapp.com/advisory/ntap-20200724-0001/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.npmjs.com/package/jsrsasign
Source: af854a3a-2127-422b-91ae-364da2661108
Product Third Party Advisory

12 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.8 / 10.0
EPSS (Exploit Probability)
2.9%
85th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

netapp kjur