VDB-217620 · CVE-2021-4306 · GCVE-100-217620

cronvel terminal-kit up to 2.1.7 redos

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.
4.8	$0-$5k	0.03

Summaryinfo

A vulnerability classified as problematic was found in cronvel terminal-kit up to 2.1.7. Affected by this vulnerability is an unknown functionality. The manipulation leads to redos. This vulnerability is known as CVE-2021-4306. There is no exploit available. It is recommended to upgrade the affected component. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Detailsinfo

A vulnerability classified as problematic has been found in cronvel terminal-kit up to 2.1.7. Affected is an unknown code. The manipulation with an unknown input leads to a redos vulnerability. CWE is classifying the issue as CWE-1333. The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles. This is going to have an impact on availability.

The weakness was published 01/07/2023 as a2e446cc3927b559d0281683feb9b821e83b758c. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2021-4306. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1449.003.

Upgrading to version 2.1.8 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch a2e446cc3927b559d0281683feb9b821e83b758c 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. The advisory contains the following remark:

Fix a possible ReDoS

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

cronvel

Name

terminal-kit

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.8

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 3.5
CNA Vector (VulDB): 🔍

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: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Redos
CWE: CWE-1333 / CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

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: terminal-kit 2.1.8
Patch: a2e446cc3927b559d0281683feb9b821e83b758c

Timelineinfo

01/07/2023 🔍
01/07/2023 +0 days 🔍
01/07/2023 +0 days 🔍
01/29/2023 +22 days 🔍

Sourcesinfo

Advisory: a2e446cc3927b559d0281683feb9b821e83b758c
Status: Confirmed

CVE: CVE-2021-4306 (🔍)
GCVE (CVE): GCVE-0-2021-4306
GCVE (VulDB): GCVE-100-217620

Entryinfo

Created: 01/07/2023 17:34
Updated: 01/29/2023 23:24
Changes: 01/07/2023 17:34 (43), 01/29/2023 23:14 (2), 01/29/2023 23:24 (28)
Complete: 🔍
Cache ID: 216:41A:103