Executive Summary
Informations | |||
---|---|---|---|
Name | CVE-2021-39163 | First vendor Publication | 2021-08-31 |
Vendor | Cve | Last vendor Modification | 2023-11-07 |
Security-Database Scoring CVSS v3
Cvss vector : CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N | |||
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Overall CVSS Score | 3.1 | ||
Base Score | 3.1 | Environmental Score | 3.1 |
impact SubScore | 1.4 | Temporal Score | 3.1 |
Exploitabality Sub Score | 1.6 | ||
Attack Vector | Network | Attack Complexity | High |
Privileges Required | Low | User Interaction | None |
Scope | Unchanged | Confidentiality Impact | Low |
Integrity Impact | None | Availability Impact | None |
Calculate full CVSS 3.0 Vectors scores |
Security-Database Scoring CVSS v2
Cvss vector : (AV:N/AC:M/Au:S/C:P/I:N/A:N) | |||
---|---|---|---|
Cvss Base Score | 3.5 | Attack Range | Network |
Cvss Impact Score | 2.9 | Attack Complexity | Medium |
Cvss Expoit Score | 6.8 | Authentication | Requires single instance |
Calculate full CVSS 2.0 Vectors scores |
Detail
Matrix is an ecosystem for open federated Instant Messaging and Voice over IP. In versions 1.41.0 and prior, unauthorised users can access the name, avatar, topic and number of members of a room if they know the ID of the room. This vulnerability is limited to homeservers where the vulnerable homeserver is in the room and untrusted users are permitted to create groups (communities). By default, only homeserver administrators can create groups. However, homeserver administrators can already access this information in the database or using the admin API. As a result, only homeservers where the configuration setting `enable_group_creation` has been set to `true` are impacted. Server administrators should upgrade to 1.41.1 or higher to patch the vulnerability. There are two potential workarounds. Server administrators can set `enable_group_creation` to `false` in their homeserver configuration (this is the default value) to prevent creation of groups by non-administrators. Administrators that are using a reverse proxy could, with partial loss of group functionality, block the endpoints `/_matrix/client/r0/groups/{group_id}/rooms` and `/_matrix/client/unstable/groups/{group_id}/rooms`. |
Original Source
Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39163 |
CWE : Common Weakness Enumeration
% | Id | Name |
---|---|---|
100 % | CWE-200 | Information Exposure |
CPE : Common Platform Enumeration
Type | Description | Count |
---|---|---|
Application | 1 | |
Os | 2 |
Sources (Detail)
Alert History
Date | Informations |
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2023-11-07 21:34:08 |
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2021-12-21 17:23:12 |
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2021-09-25 05:23:07 |
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2021-09-09 21:22:50 |
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2021-09-08 21:23:34 |
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2021-08-31 21:23:10 |
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