{"id":"UBUNTU-CVE-2023-32682","details":"Synapse is a Matrix protocol homeserver written in Python with the Twisted framework. In affected versions it may be possible for a deactivated user to login when using uncommon configurations. This only applies if any of the following are true: 1. JSON Web Tokens are enabled for login via the `jwt_config.enabled` configuration setting. 2. 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. If not using JSON Web Tokens, ensure that deactivated users do not have a password set. This issue has been addressed in version 1.85.0. Users are advised to upgrade.","modified":"2025-09-08T16:56:19Z","published":"2023-06-06T19:15:00Z","upstream":["CVE-2023-32682"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-32682"},{"type":"REPORT","url":"https://github.com/matrix-org/synapse/security/advisories/GHSA-26c5-ppr8-f33p"},{"type":"REPORT","url":"https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#password_config"},{"type":"REPORT","url":"https://github.com/matrix-org/synapse/pull/15624"},{"type":"REPORT","url":"https://matrix-org.github.io/synapse/latest/admin_api/user_admin_api.html#create-or-modify-account"},{"type":"REPORT","url":"https://matrix-org.github.io/synapse/latest/jwt.html"},{"type":"REPORT","url":"https://github.com/matrix-org/synapse/pull/15634"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-32682"}],"affected":[{"package":{"name":"matrix-synapse","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/matrix-synapse@0.24.0+dfsg-1ubuntu0.1~esm4?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.19.2+dfsg-6","0.24.0+dfsg-1","0.24.0+dfsg-1ubuntu0.1~esm1","0.24.0+dfsg-1ubuntu0.1~esm4"],"ecosystem_specific":{"binaries":[{"binary_version":"0.24.0+dfsg-1ubuntu0.1~esm4","binary_name":"matrix-synapse"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-32682.json"}},{"package":{"name":"matrix-synapse","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/matrix-synapse@1.11.0-1ubuntu0.1~esm2?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.0-1","1.4.0-1","1.5.0-1","1.5.1-1","1.6.0-1","1.6.1-1","1.7.0-2","1.7.1-1","1.7.2-1","1.7.3-1","1.8.0-1","1.9.0-1","1.9.1-1","1.10.0-1","1.10.0-2","1.11.0-1","1.11.0-1ubuntu0.1~esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.11.0-1ubuntu0.1~esm2","binary_name":"matrix-synapse"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-32682.json"}},{"package":{"name":"matrix-synapse","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/matrix-synapse@1.53.0-1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.39.0-1","1.47.0-2","1.47.1-1","1.48.0-1","1.49.0-1","1.49.2-1","1.50.1-1","1.50.2-1","1.51.0-1","1.52.0-1","1.53.0-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.53.0-1","binary_name":"matrix-synapse"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-32682.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}