7.5
HIGH CVSS 3.1
CVE-2020-14966
OpenSSL ECDSA Signature Malleability in jsrsasign
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.

INFO

Published Date :

June 22, 2020, 12:15 p.m.

Last Modified :

Nov. 21, 2024, 5:04 a.m.

Remotely Exploit :

Yes !
Affected Products

The following products are affected by CVE-2020-14966 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Netapp max_data
1 Jsrsasign_project jsrsasign
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 MEDIUM [email protected]
CVSS 3.1 HIGH [email protected]
Public PoC/Exploit Available at Github

CVE-2020-14966 has a 9 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2020-14966.

URL Resource
https://github.com/kjur/jsrsasign/issues/437 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
https://github.com/kjur/jsrsasign/issues/437 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
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-14966 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2020-14966 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

None

JavaScript

Updated: 1 day, 14 hours ago
0 stars 0 fork 0 watcher
Born at : May 6, 2024, 5:50 a.m. This repo has been linked 6 different CVEs too.

None

JavaScript

Updated: 1 day, 13 hours ago
0 stars 0 fork 0 watcher
Born at : May 2, 2024, 8:24 a.m. This repo has been linked 6 different CVEs too.

None

JavaScript

Updated: 11 months, 2 weeks ago
0 stars 0 fork 0 watcher
Born at : April 26, 2024, 7:50 a.m. This repo has been linked 6 different CVEs too.

None

JavaScript

Updated: 1 year, 4 months ago
0 stars 0 fork 0 watcher
Born at : April 26, 2024, 7:20 a.m. This repo has been linked 6 different CVEs too.

npm directory of the jsrsasign repo

Makefile JavaScript

Updated: 2 years, 3 months ago
0 stars 0 fork 0 watcher
Born at : May 15, 2023, 2:06 p.m. This repo has been linked 5 different CVEs too.

None

Makefile HTML JavaScript CSS

Updated: 3 years, 1 month ago
0 stars 0 fork 0 watcher
Born at : July 12, 2022, 4:51 a.m. This repo has been linked 5 different CVEs too.

None

Makefile HTML JavaScript CSS

Updated: 4 years, 5 months ago
0 stars 0 fork 0 watcher
Born at : March 31, 2021, 2:04 p.m. This repo has been linked 3 different CVEs too.

None

Makefile HTML JavaScript CSS

Updated: 1 year, 1 month ago
11 stars 0 fork 0 watcher
Born at : Dec. 2, 2020, 7:57 a.m. This repo has been linked 3 different CVEs too.

The 'jsrsasign' (RSA-Sign JavaScript Library) is an opensource free cryptography library supporting RSA/RSAPSS/ECDSA/DSA signing/validation, ASN.1, PKCS#1/5/8 private/public key, X.509 certificate, CRL, OCSP, CMS SignedData, TimeStamp, CAdES and JSON Web Signature/Token in pure JavaScript.

asn1 x509 certificate crl ocsp timestamp cms rsa dsa ecdsa aes 3des sha1 sha2 signature encryption decryption

JavaScript CSS HTML Makefile

Updated: 1 month, 2 weeks ago
3343 stars 636 fork 636 watcher
Born at : April 30, 2012, 6:18 a.m. This repo has been linked 6 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-14966 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-14966 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://github.com/kjur/jsrsasign/issues/437
    Added Reference https://github.com/kjur/jsrsasign/releases/tag/8.0.17
    Added Reference https://github.com/kjur/jsrsasign/releases/tag/8.0.18
    Added Reference https://kjur.github.io/jsrsasign/
    Added Reference https://security.netapp.com/advisory/ntap-20200724-0001/
    Added Reference https://www.npmjs.com/package/jsrsasign
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Jan. 28, 2023

    Action Type Old Value New Value
    Changed Reference Type https://github.com/kjur/jsrsasign/issues/437 Exploit, Third Party Advisory https://github.com/kjur/jsrsasign/issues/437 Exploit, Issue Tracking, Third Party Advisory
    Changed Reference Type https://security.netapp.com/advisory/ntap-20200724-0001/ No Types Assigned https://security.netapp.com/advisory/ntap-20200724-0001/ Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:netapp:max_data:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jul. 24, 2020

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20200724-0001/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Jun. 29, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:P/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
    Changed Reference Type https://github.com/kjur/jsrsasign/issues/437 No Types Assigned https://github.com/kjur/jsrsasign/issues/437 Exploit, Third Party Advisory
    Changed Reference Type https://github.com/kjur/jsrsasign/releases/tag/8.0.17 No Types Assigned https://github.com/kjur/jsrsasign/releases/tag/8.0.17 Release Notes, Third Party Advisory
    Changed Reference Type https://github.com/kjur/jsrsasign/releases/tag/8.0.18 No Types Assigned https://github.com/kjur/jsrsasign/releases/tag/8.0.18 Release Notes, Third Party Advisory
    Changed Reference Type https://kjur.github.io/jsrsasign/ No Types Assigned https://kjur.github.io/jsrsasign/ Release Notes, Third Party Advisory
    Changed Reference Type https://www.npmjs.com/package/jsrsasign No Types Assigned https://www.npmjs.com/package/jsrsasign Product, Third Party Advisory
    Added CWE NIST CWE-347
    Added CPE Configuration OR *cpe:2.3:a:jsrsasign_project:jsrsasign:*:*:*:*:*:node.js:*:* versions up to (including) 8.0.18
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 7.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 5
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.28 }} 0.07%

score

0.51007

percentile