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CVE-2020-14968 Detail


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.


CVSS 3.x Severity and Metrics:

Base Score:  9.8 CRITICAL
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/kjur/jsrsasign/issues/438 Exploit  Issue Tracking  Third Party Advisory 
https://github.com/kjur/jsrsasign/releases/tag/8.0.17 Release Notes  Third Party Advisory 
https://github.com/kjur/jsrsasign/releases/tag/8.0.18 Release Notes  Third Party Advisory 
https://kjur.github.io/jsrsasign/ Release Notes  Third Party Advisory 
https://security.netapp.com/advisory/ntap-20200724-0001/ Third Party Advisory 
https://www.npmjs.com/package/jsrsasign Product  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer cwe source acceptance level NIST  

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
NVD Published Date:
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