Skip to content

Sydent 2.3.0 (2021-04-15)
Compare
Choose a tag to compare
@richvdh richvdh released this 15 Apr 11:12
v2.3.0
This tag was signed with the committer’s verified signature. The key has expired.
richvdh Richard van der Hoff
GPG key ID: 392A2BD3423D78FF
Expired
Learn about vigilant mode.
c2ab108

Note: this will be the last release of Sydent to support Python 3.5 or earlier. Future releases will require at least Python 3.6.

Security advisory

This release contains fixes to the following security issues:

  • Denial of service attack via disk space or memory exhaustion (CVE-2021-29430).
  • SSRF due to missing validation of hostnames (CVE-2021-29431).
  • Malicious users could control the content of invitation emails (CVE-2021-29432).
  • Denial of service (via resource exhaustion) due to improper input validation (CVE-2021-29433).

Although we are not aware of these vulnerabilities being exploited in the wild, Sydent server administrators are advised to update as soon as possible. Note that as well as changes to the package, there are also changes to the default email templates. If any templates have been updated locally, they must also be updated in line with the changes to the defaults for full protection from CVE-2021-29432.

Features

  • Accept an optional web_client_location argument to the invite endpoint which allows customisation of the email template. (#326)
  • Move templates to a per-brand subdirectory of /res. Add templates.path and brand.default config options. (#328)

Bugfixes

  • Fix a regression in v2.2.0 where the wrong characters would be obfuscated in a 3pid invite. (#317)
  • Fix a long-standing bug where invalid JSON would be accepted over the HTTP interfaces. (#337)
  • During user registration on the identity server, validate that the MXID returned by the contacted homeserver is valid for that homeserver. (cc97fff)
  • Ensure that /v2/ endpoints are correctly authenticated. (ce04a68)
  • Perform additional validation on the response received when requesting server signing keys. (07e6da7)
  • Validate the matrix_server_name parameter given during user registration. (9e57334, 8936925, 3d531ed, 0f00412)
  • Limit the size of requests received from HTTP clients. (89071a1, 0523511, f56eee3)
  • Limit the size of responses received from HTTP servers. (89071a1, 0523511, f56eee3)
  • In invite emails, randomise the multipart boundary, and include MXIDs where available. (4469d1d, 6b405a8, 65a6e91)
  • Perform additional validation on the client_secret and email parameters to various APIs. (3175fd3)

Updates to the Docker image

  • Base docker image on Debian rather than Alpine Linux. (#335)

Internal Changes

  • Fix test logging to allow braces in log output. (#318)
  • Install prometheus_client in the Docker image. (#325)
  • Bump the version of signedjson to 1.1.1. (#334)
Assets 2
Loading