CVE-2020-14968

CRITICAL EPSS 85.3%
Published Jun 22, 20206y ago · Modified Jun 22, 20261w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Jun 22, 2020 6y ago
Last Modified Jun 22, 2026 1w ago

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.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
85.3% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer Memory Safety

Affected Products 2

VendorProductVersionRange
kjurjsrsasign* <8.0.17
netappmax_data*any

References 6

  • github.com https://github.com/kjur/jsrsasign/issues/438
    ExploitIssue TrackingThird Party Advisory
  • github.com https://github.com/kjur/jsrsasign/releases/tag/8.0.17
    Release NotesThird Party Advisory
  • github.com https://github.com/kjur/jsrsasign/releases/tag/8.0.18
    Release NotesThird Party Advisory
  • kjur.github.io https://kjur.github.io/jsrsasign/
    Release NotesThird Party Advisory
  • security.netapp.com https://security.netapp.com/advisory/ntap-20200724-0001/
    Third Party Advisory
  • npmjs.com https://www.npmjs.com/package/jsrsasign
    ProductThird Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.