CVE-2020-14966

HIGH EPSS 62.0%
Published Jun 22, 20206y ago · Modified Jun 22, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published Jun 22, 2020 6y ago
Last Modified Jun 22, 2026 1w ago

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 Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
62.0% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-347

Affected Products 2

VendorProductVersionRange
kjurjsrsasign* ≤8.0.18
netappmax_data*any

References 6

  • github.com https://github.com/kjur/jsrsasign/issues/437
    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.