matrix-synapse vulnerable to temporary storage of plaintext passwords during password changes

THẤP 3.7CVE-2023-41335 · GHSA-4f74-84v3-j9q5 · PYSEC-2023-185 · Công bố 27/09/2023 · cập nhật 17/06/2026

Tóm tắt nhanh

CVE-2023-41335 là lỗ hổng mức THẤP (CVSS 3.7) ảnh hưởng matrix-synapse, synapse (matrix).
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.39%, cao hơn 32.8% các lỗ hổng khác.
Cách xử lý: cập nhật lên 1.93.0 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
matrix-synapse PyPI	`≥ 1.66.0, < 1.93.0`	`1.93.0`
synapse matrix	`≥ 1.66.0, < 1.93.0`	`1.93.0`

Mô tả

Impact

When users update their passwords, the new credentials may be briefly held in the server database. While this doesn't grant the server any added capabilities—it already learns the users' passwords as part of the authentication process—it does disrupt the expectation that passwords won't be stored in the database. As a result, these passwords could inadvertently be captured in database backups for a longer duration.

These temporarily stored passwords are automatically erased after a 48-hour window.

Patches

https://github.com/matrix-org/synapse/pull/16272

References

This bug was due to a regression in https://github.com/matrix-org/synapse/pull/13188.

Mô tả của NVD

Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. When users update their passwords, the new credentials may be briefly held in the server database. While this doesn't grant the server any added capabilities—it already learns the users' passwords as part of the authentication process—it does disrupt the expectation that passwords won't be stored in the database. As a result, these passwords could inadvertently be captured in database backups for a longer duration. These temporarily stored passwords are automatically erased after a 48-hour window. This issue has been addressed in version 1.93.0. Users are advised to upgrade. There are no known workarounds for this issue.