matrix-sydent

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• Critical 9.3
  CVE-2023-38686

  Sydent does not verify email server certificates

  Sydent is an identity server for the Matrix communications protocol. Prior to version 2.5.6, if configured to send emails using TLS, Sydent does not verify SMTP servers' certificates. This makes Sydent's emails vulnerable to interception via a man-in-the-midd…

  Matrix sydent matrix-sydent matrix-sydent Ubuntu PyPI
  Aug 4, 2023
• High 7.7
  CVE-2021-29431

  SSRF in Sydent due to missing validation of hostnames

  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 b…

  Matrix sydent matrix-sydent PyPI
  Apr 15, 2021
• Medium 5.3
  CVE-2021-29432

  Malicious users could control the content of invitation emails

  Sydent is a reference matrix identity server. A malicious user could abuse Sydent to send out arbitrary emails from the Sydent email address. This could be used to construct plausible phishing emails, for example. This issue has been fixed in 4469d1d.

  Matrix sydent matrix-sydent PyPI
  Apr 15, 2021
• High 7.5
  CVE-2021-29430

  Denial of service attack via memory exhaustion

  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 no…

  Matrix sydent matrix-sydent PyPI
  Apr 15, 2021
• Medium 4.3
  CVE-2021-29433

  Denial of service (via resource exhaustion) due to improper input validation

  Sydent is a reference Matrix identity server. In Sydent versions 2.2.0 and prior, sissing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk space and memory leading to resource exhau…

  Matrix sydent matrix-sydent PyPI
  Apr 15, 2021
• High 7.5
  CVE-2019-11842

  matrix-sydent and matrix-synapse Use Cryptographically Weak PRNG

  An issue was discovered in Matrix Sydent before 1.0.3 and Synapse before 0.99.3.1. Random number generation is mishandled, which makes it easier for attackers to predict a Sydent authentication token or a Synapse random ID.

  matrix-synapse matrix-synapse matrix-sydent Ubuntu PyPI
  May 9, 2019
• Medium 5.9
  CVE-2019-11340

  Matrix Sydent mishandles emails

  util/emailutils.py in Matrix Sydent before 1.0.2 mishandles registration restrictions that are based on e-mail domain, if the allowed_local_3pids option is enabled. This occurs because of potentially unwanted behavior in Python, in which an email.utils.parsea…

  matrix-sydent PyPI
  Apr 19, 2019