Executive Summary
Informations | |||
---|---|---|---|
Name | CVE-2020-26890 | First vendor Publication | 2020-11-24 |
Vendor | Cve | Last vendor Modification | 2023-11-07 |
Security-Database Scoring CVSS v3
Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | |||
---|---|---|---|
Overall CVSS Score | 7.5 | ||
Base Score | 7.5 | Environmental Score | 7.5 |
impact SubScore | 3.6 | Temporal Score | 7.5 |
Exploitabality Sub Score | 3.9 | ||
Attack Vector | Network | Attack Complexity | Low |
Privileges Required | None | User Interaction | None |
Scope | Unchanged | Confidentiality Impact | None |
Integrity Impact | None | Availability Impact | High |
Calculate full CVSS 3.0 Vectors scores |
Security-Database Scoring CVSS v2
Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P) | |||
---|---|---|---|
Cvss Base Score | 5 | Attack Range | Network |
Cvss Impact Score | 2.9 | Attack Complexity | Low |
Cvss Expoit Score | 10 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
Matrix Synapse before 1.20.0 erroneously permits non-standard NaN, Infinity, and -Infinity JSON values in fields of m.room.member events, allowing remote attackers to execute a denial of service attack against the federation and common Matrix clients. If such a malformed event is accepted into the room's state, the impact is long-lasting and is not fixed by an upgrade to a newer version, requiring the event to be manually redacted instead. Since events are replicated to servers of other room members, the impact is not constrained to the server of the event sender. |
Original Source
Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26890 |
CWE : Common Weakness Enumeration
% | Id | Name |
---|---|---|
100 % | CWE-20 | Improper Input Validation |
CPE : Common Platform Enumeration
Type | Description | Count |
---|---|---|
Application | 1 | |
Os | 2 |
Sources (Detail)
Alert History
Date | Informations |
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2023-11-07 21:36:17 |
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2021-08-05 01:38:22 |
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2021-07-21 17:23:11 |
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2021-05-04 13:50:32 |
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2021-04-22 03:02:30 |
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2021-02-05 17:22:51 |
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2020-12-10 09:22:50 |
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2020-12-03 21:23:23 |
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2020-11-25 01:31:11 |
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2020-11-25 01:29:23 |
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2020-11-24 17:22:51 |
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2020-11-24 09:22:48 |
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