Server-side Request Forgery (SSRF) Affecting matrix-sydent package, versions [,2.3.0)


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.1% (42nd percentile)

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  • Snyk IDSNYK-PYTHON-MATRIXSYDENT-1247366
  • published16 Apr 2021
  • disclosed16 Apr 2021
  • creditUnknown

Introduced: 16 Apr 2021

CVE-2021-29431  (opens in a new tab)
CWE-918  (opens in a new tab)

How to fix?

Upgrade matrix-sydent to version 2.3.0 or higher.

Overview

matrix-sydent is a Reference Matrix Identity Verification and Lookup Server

Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF). 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. An additional potential workaround would be to use a firewall to ensure that Sydent cannot reach internal HTTP resources.

CVSS Scores

version 3.1