VDB-183788 · CVE-2021-41100 · GHSA-9rm2-w6pq-333m

Wire-server prior 2021-08-16 Authorization Header improper authorization

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.
6.4	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in Wire-server. Affected by this vulnerability is an unknown functionality of the component Authorization Header Handler. Such manipulation leads to improper authorization. This vulnerability is listed as CVE-2021-41100. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Wire-server. It has been rated as critical. Affected by this issue is an unknown part of the component Authorization Header Handler. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability.

The weakness was presented 10/05/2021 as GHSA-9rm2-w6pq-333m. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2021-41100 since 09/15/2021. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1548.002.

Upgrading to version 2021-08-16 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Wire-server

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.4
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: Improper authorization
CWE: CWE-285 / CWE-266
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: Wire-server 2021-08-16

Timelineinfo

08/16/2021 🔍
09/15/2021 +30 days 🔍
10/05/2021 +20 days 🔍
10/05/2021 +0 days 🔍
10/08/2021 +3 days 🔍

Sourcesinfo

Advisory: GHSA-9rm2-w6pq-333m
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-41100 (🔍)
GCVE (CVE): GCVE-0-2021-41100
GCVE (VulDB): GCVE-100-183788

Entryinfo

Created: 10/05/2021 07:48
Updated: 10/08/2021 19:31
Changes: 10/05/2021 07:48 (49), 10/08/2021 19:23 (2), 10/08/2021 19:31 (1)
Complete: 🔍
Cache ID: 216::103