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 :
Jan. 28, 2023, 12:57 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
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 |
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
None
JavaScript
None
JavaScript
None
JavaScript
npm directory of the jsrsasign repo
Makefile JavaScript
None
Makefile HTML JavaScript CSS
None
Makefile HTML JavaScript CSS
None
Makefile HTML JavaScript CSS
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
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 [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
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.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.91 }} -0.01%
score
0.83141
percentile