CVE-2020-14968

Severity Score

9.8

*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 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.

Se detectó un problema en el paquete jsrsasign versiones anteriores a 8.0.17 para Node.js. La implementación de RSASSA-PSS (RSA-PSS) no detecta la manipulación y modificación de firma al anteponer bytes "\0" a una firma (acepta estas firmas modificadas como válidas). Un atacante puede abusar de este comportamiento en una aplicación al crear múltiples firmas válidas donde solo debe existir una firma. Además, un atacante podría anteponer estos bytes con el objetivo de desencadenar problemas de corrupción de la memoria

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* 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-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

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/438	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"				< 8.0.17 Search vendor "Jsrsasign Project" for product "Jsrsasign" and version " < 8.0.17"		node.js		Affected
Netapp Search vendor "Netapp"		Max Data Search vendor "Netapp" for product "Max Data"				-		-		Affected