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PYSEC-2021-22
Quick fix
PYSEC-2021-22 — matrix-sydent: upgrade to the fixed version with the command below.
pip install --upgrade 'matrix-sydent>=3d531ed50d2fd41ac387f36d44d3fb2c62dd22d3'Details
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.
Are you affected?
Enter the version of the package you're using.
Affected packages
PyPI/matrix-sydent
Introduced in:
0Fixed in: 3d531ed50d2fd41ac387f36d44d3fb2c62dd22d3Fix
pip install --upgrade 'matrix-sydent>=3d531ed50d2fd41ac387f36d44d3fb2c62dd22d3'References
- https://github.com/matrix-org/sydent/commit/3d531ed50d2fd41ac387f36d44d3fb2c62dd22d3[FIX]
- https://github.com/matrix-org/sydent/commit/0f00412017f25619bc36c264b29ea96808bf310a[FIX]
- https://github.com/matrix-org/sydent/security/advisories/GHSA-9jhm-8m8c-c3f4[ADVISORY]
- https://github.com/matrix-org/sydent/commit/9e573348d81df8191bbe8c266c01999c9d57cd5f[FIX]
- https://github.com/matrix-org/sydent/commit/8936925f561b0c352c2fa922d5097d7245aad00a[FIX]
- https://pypi.org/project/matrix-sydent/[PACKAGE]
- https://github.com/matrix-org/sydent/releases/tag/v2.3.0[WEB]