VDB-185217 · CVE-2021-42740 · GCVE-0-2021-42740

shell-quote up to 1.7.2 on Node.js Windows Drive Letter exec os command injection

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3	$0-$5k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in shell-quote up to 1.7.2 on Node.js. Affected is the function exec of the component Windows Drive Letter Handler. Performing a manipulation results in os command injection. This vulnerability is reported as CVE-2021-42740. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in shell-quote up to 1.7.2 on Node.js (JavaScript Library). It has been classified as critical. This affects the function exec of the component Windows Drive Letter Handler. The manipulation with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was disclosed 10/22/2021 as 5799416ed454aa4ec9afafc895b4e31760ea1abe. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2021-42740 since 10/20/2021. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1202 for this issue.

Upgrading to version 1.7.3 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 5799416ed454aa4ec9afafc895b4e31760ea1abe is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

JavaScript Library

Name

shell-quote

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Os command injection
CWE: CWE-78 / CWE-77 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: shell-quote 1.7.3
Patch: 5799416ed454aa4ec9afafc895b4e31760ea1abe

Timelineinfo

10/20/2021 🔍
10/22/2021 +2 days 🔍
10/22/2021 +0 days 🔍
10/28/2021 +6 days 🔍

Sourcesinfo

Advisory: 5799416ed454aa4ec9afafc895b4e31760ea1abe
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-42740 (🔍)
GCVE (CVE): GCVE-0-2021-42740
GCVE (VulDB): GCVE-100-185217

Entryinfo

Created: 10/22/2021 07:34
Updated: 10/28/2021 15:30
Changes: 10/22/2021 07:34 (46), 10/28/2021 15:30 (1)
Complete: 🔍
Cache ID: 216::103