VDB-188785 · CVE-2021-43844 · GHSA-95v4-748v-fmf9

MSEdgeRedirect up to 0.5.0.0 URL _DecodeAndRun external reference

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.
7.4	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in MSEdgeRedirect up to 0.5.0.0. This vulnerability affects the function _DecodeAndRun of the component URL Handler. This manipulation causes external reference. This vulnerability is registered as CVE-2021-43844. Remote exploitation of the attack is possible. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in MSEdgeRedirect up to 0.5.0.0. Affected by this vulnerability is the function _DecodeAndRun of the component URL Handler. The manipulation with an unknown input leads to a external reference vulnerability. The CWE definition for the vulnerability is CWE-610. The product uses an externally controlled name or reference that resolves to a resource that is outside of the intended control sphere. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 12/21/2021 as GHSA-95v4-748v-fmf9. The advisory is shared at github.com. This vulnerability is known as CVE-2021-43844 since 11/16/2021. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

Upgrading to version 0.5.0.1 eliminates this vulnerability. The upgrade is hosted for download at github.com.

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

Productinfo

Name

MSEdgeRedirect

Version

0.5.0

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector (GitHub, Inc.): 🔍

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: External reference
CWE: CWE-610
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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: MSEdgeRedirect 0.5.0.1

Timelineinfo

11/16/2021 🔍
12/21/2021 +35 days 🔍
12/21/2021 +0 days 🔍
12/25/2021 +4 days 🔍

Sourcesinfo

Advisory: GHSA-95v4-748v-fmf9
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-43844 (🔍)
GCVE (CVE): GCVE-0-2021-43844
GCVE (VulDB): GCVE-100-188785

Entryinfo

Created: 12/21/2021 08:29
Updated: 12/25/2021 07:47
Changes: 12/21/2021 08:29 (50), 12/25/2021 07:42 (2), 12/25/2021 07:47 (1)
Complete: 🔍
Cache ID: 216::103