CVE-2021-29430 Detail
This vulnerability is currently awaiting analysis.
Description
Sydent is a reference Matrix identity server. Sydent does not limit the size of requests it receives from HTTP clients. A malicious user could send an HTTP request with a very large body, leading to memory exhaustion and denial of service. Sydent also does not limit response size for requests it makes to remote Matrix homeservers. A malicious homeserver could return a very large response, again leading to memory exhaustion and denial of service. This affects any server which accepts registration requests from untrusted clients. This issue has been patched by releases 89071a1, 0523511, f56eee3. As a workaround request sizes can be limited in an HTTP reverse-proxy. There are no known workarounds for the problem with overlarge responses.
Severity
References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-20 | Improper Input Validation | GitHub, Inc. |
| CWE-400 | Uncontrolled Resource Consumption | GitHub, Inc. |
Change History
0 change records found show changes
Quick Info
CVE Dictionary Entry:
CVE-2021-29430
NVD Published Date:
04/15/2021
NVD Last Modified:
04/15/2021
Source:
GitHub, Inc.