Bug 2242240 (CVE-2023-41335)

Summary:	CVE-2023-41335 matrix-synapse: temporary storage of plaintext passwords during password changes
Product:	[Other] Security Response	Reporter:	TEJ RATHI <trathi>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	matrix-synapse 1.93.0	Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2242241
Bug Blocks:

Description TEJ RATHI 2023-10-05 06:11:00 UTC

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.

https://github.com/matrix-org/synapse/pull/16272
https://github.com/matrix-org/synapse/security/advisories/GHSA-4f74-84v3-j9q5

Comment 1 TEJ RATHI 2023-10-05 06:11:45 UTC

Created matrix-synapse tracking bugs for this issue:

Affects: fedora-all [bug 2242241]