jsrsasign Package up to 8.0.16 on Node.js RSASSA-PSS memory corruption

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7.0	$0-$5k	0.00

A vulnerability, which was classified as critical, was found in jsrsasign Package up to 8.0.16 on Node.js (JavaScript Library). This affects an unknown part of the component RSASSA-PSS Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. This is going to have an impact on integrity, and availability. The summary by CVE is:

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.

The weakness was published 06/22/2020. This vulnerability is uniquely identified as CVE-2020-14968 since 06/22/2020. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

Upgrading to version 8.0.17 eliminates this vulnerability.

Similar entries are available at 157124 and 157123.

Productinfoedit

Type

JavaScript Library

Name

jsrsasign Package

CPE 2.3infoedit

CPE 2.2infoedit

CVSSv3infoedit

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔒

CVSSv2infoedit

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

NVD Base Score: 🔒

Exploitinginfoedit

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
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Economy: 🔍
Predictions: 🔍
Remediation: 🔍

Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: jsrsasign Package 8.0.17

Timelineinfoedit

06/22/2020 Advisory disclosed
06/22/2020 +0 days CVE assigned
06/23/2020 +1 days VulDB entry created
10/26/2020 +125 days VulDB last update

Sourcesinfoedit

Status: Not defined
Confirmation: 🔒

CVE: CVE-2020-14968 (🔒)
See also: 🔒

Entryinfoedit

Created: 06/23/2020 09:48 AM
Updated: 10/26/2020 02:00 PM
Changes: (1) advisory_confirm_url
Complete: 🔍