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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-29431 Detail

Description

Sydent is a reference Matrix identity server. Sydent can be induced to send HTTP GET requests to internal systems, due to lack of parameter validation or IP address blacklisting. It is not possible to exfiltrate data or control request headers, but it might be possible to use the attack to perform an internal port enumeration. This issue has been addressed in in 9e57334, 8936925, 3d531ed, 0f00412. A potential workaround would be to use a firewall to ensure that Sydent cannot reach internal HTTP resources.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/matrix-org/sydent/commit/0f00412017f25619bc36c264b29ea96808bf310a Patch  Third Party Advisory 
https://github.com/matrix-org/sydent/commit/0f00412017f25619bc36c264b29ea96808bf310a Patch  Third Party Advisory 
https://github.com/matrix-org/sydent/commit/3d531ed50d2fd41ac387f36d44d3fb2c62dd22d3 Patch  Third Party Advisory 
https://github.com/matrix-org/sydent/commit/3d531ed50d2fd41ac387f36d44d3fb2c62dd22d3 Patch  Third Party Advisory 
https://github.com/matrix-org/sydent/commit/8936925f561b0c352c2fa922d5097d7245aad00a Patch  Third Party Advisory 
https://github.com/matrix-org/sydent/commit/8936925f561b0c352c2fa922d5097d7245aad00a Patch  Third Party Advisory 
https://github.com/matrix-org/sydent/commit/9e573348d81df8191bbe8c266c01999c9d57cd5f Patch  Third Party Advisory 
https://github.com/matrix-org/sydent/commit/9e573348d81df8191bbe8c266c01999c9d57cd5f Patch  Third Party Advisory 
https://github.com/matrix-org/sydent/releases/tag/v2.3.0 Release Notes  Third Party Advisory 
https://github.com/matrix-org/sydent/releases/tag/v2.3.0 Release Notes  Third Party Advisory 
https://github.com/matrix-org/sydent/security/advisories/GHSA-9jhm-8m8c-c3f4 Patch  Third Party Advisory 
https://github.com/matrix-org/sydent/security/advisories/GHSA-9jhm-8m8c-c3f4 Patch  Third Party Advisory 
https://pypi.org/project/matrix-sydent/ Product  Third Party Advisory 
https://pypi.org/project/matrix-sydent/ Product  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-918 Server-Side Request Forgery (SSRF) GitHub, Inc.  
CWE-20 Improper Input Validation GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-29431
NVD Published Date:
04/15/2021
NVD Last Modified:
11/21/2024
Source:
GitHub, Inc.