GitHub Advisoryadvisory · PyPI

GHSA-56w4-5538-8v8h Synapse Matrix has a partial room state leak via Sliding Sync

MEDIUM Published 2024-12-03 Modified 2024-12-03 Official page ↗

Aliases: CVE-2024-53867
Ecosystem: PyPI
Packages: matrix-synapse
Severity: Moderate
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weaknesses: CWE-497
Reviewed: 2024-12-03

Affected packages

• PyPI matrix-synapse: >= 1.113.0rc1, < 1.120.1 → fixed in 1.120.1

Description

Impact The Sliding Sync feature on Synapse versions between 1.113.0rc1 and 1.120.0 can leak partial room state changes to users no longer in a room. Non-state events, like messages, are unaffected. Patches Synapse version 1.120.1 fixes the problem. Workarounds Disable Sliding Sync. References https://github.com/matrix-org/matrix-spec-proposals/pull/4186 https://github.com/element-hq/synapse/blob/d80cd57c54427687afcb48740d99219c88a0fff1/synapse/config/experimental.py#L341-L344 For more information If you have any questions or comments about this advisory, please email us at security at element.io.

Related

Alias · CVE (1)

CVE-2024-53867 Synapse is an open-source Matrix homeserver. vulnerability

Weakness · CWE (1)

CWE-497 Exposure of Sensitive System Information to an Unauthorized Control Sphere weakness

References