CVE-2020-14966

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Se detectó un problema en el paquete jsrsasign por medio de 8.0.18 para Node.js. Permite una maleabilidad en las firmas ECDSA al no comprobar los desbordamientos en la longitud de una secuencia y los caracteres "0" agregados o antepuestos a un entero. Las firmas modificadas son verificadas como válidas. Esto podría tener un impacto relevante para la seguridad si una aplicación se basara en una sola firma canónica

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-06-22 CVE Reserved
2020-06-22 CVE Published
2024-08-04 CVE Updated
2024-08-04 First Exploit
2024-10-16 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-347: Improper Verification of Cryptographic Signature

CAPEC

References (6)

URL	Tag	Source
https://github.com/kjur/jsrsasign/releases/tag/8.0.17	Release Notes
https://github.com/kjur/jsrsasign/releases/tag/8.0.18	Release Notes
https://kjur.github.io/jsrsasign	Release Notes
https://security.netapp.com/advisory/ntap-20200724-0001	Third Party Advisory
https://www.npmjs.com/package/jsrsasign	Product

URL	Date	SRC
https://github.com/kjur/jsrsasign/issues/437	2024-08-04

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Jsrsasign Project Search vendor "Jsrsasign Project"		Jsrsasign Search vendor "Jsrsasign Project" for product "Jsrsasign"				<= 8.0.18 Search vendor "Jsrsasign Project" for product "Jsrsasign" and version " <= 8.0.18"		node.js		Affected
Netapp Search vendor "Netapp"		Max Data Search vendor "Netapp" for product "Max Data"				-		-		Affected