Bug 2213001 (CVE-2023-32682)

Summary:	CVE-2023-32682 matrix-synapse: Improper checks for deactivated users during login
Product:	[Other] Security Response	Reporter:	Zack Miele <zmiele>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	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 1.85.0	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-06-07 04:30:27 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2213003
Bug Blocks:	2212998

Description Zack Miele 2023-06-06 20:19:56 UTC

It may be possible for a deactivated user to login when using uncommon configurations.

This only applies if any of the following are true:

JSON Web Tokens are enabled for login via the jwt_config.enabled configuration setting
The local password database is enabled via the password_config.enabled and password_config.localdb_enabled configuration settings and a user's password is updated via an admin API after a user is deactivated.
Note that the local password database is enabled by default, but it is uncommon to set a user's password after they've been deactivated.

Installations that are configured to only allow login via Single Sign-On (SSO) via CAS, SAML or OpenID Connect (OIDC); or via an external password provider (e.g. LDAP) are not affected.

https://github.com/matrix-org/synapse/security/advisories/GHSA-26c5-ppr8-f33p

Comment 1 Zack Miele 2023-06-06 20:20:11 UTC

Created matrix-synapse tracking bugs for this issue:

Affects: fedora-all [bug 2213003]

Comment 2 Product Security DevOps Team 2023-06-07 04:30:25 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.