Briar up to 1.4.21 Message access control

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Briar up to 1.4.21. This affects an unknown function of the component Message Handler. Executing a manipulation can lead to access control. The identification of this vulnerability is CVE-2023-33981. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Briar up to 1.4.21 and classified as critical. This vulnerability affects an unknown code block of the component Message Handler. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Briar before 1.4.22 allows attackers to spoof other users' messages in a blog, forum, or private group, but each spoofed message would need to be an exact duplicate of a legitimate message displayed alongside the spoofed one.

The weakness was shared 05/24/2023. The advisory is shared for download at briarproject.org. This vulnerability was named CVE-2023-33981 since 05/24/2023. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 1.4.22 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-38105). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.6
VulDB Temp Score: 4.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Briar 1.4.22

Timelineinfo

05/24/2023 🔍
05/24/2023 +0 days 🔍
05/24/2023 +0 days 🔍
01/06/2026 +958 days 🔍

Sourcesinfo

Advisory: briarproject.org
Status: Confirmed

CVE: CVE-2023-33981 (🔍)
GCVE (CVE): GCVE-0-2023-33981
GCVE (VulDB): GCVE-100-229864
EUVD: 🔍

Entryinfo

Created: 05/24/2023 21:10
Updated: 01/06/2026 16:57
Changes: 05/24/2023 21:10 (39), 01/16/2025 20:36 (35), 01/06/2026 16:57 (1)
Complete: 🔍
Cache ID: 216::103

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