CVE-2023-32682: Matrix synapse Synapse Has Improper Checks For Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-26c5-ppr8-f33p",
  "modified" : "2024-09-24T17:36:26Z",
  "published" : "2023-06-06T16:40:42Z",
  "aliases" : [ "CVE-2023-32682" ],
  "summary" : "Synapse has improper checks for deactivated users during login",
  "details" : "### Impact\nIt may be possible for a deactivated user to login when using uncommon configurations.\n\nThis only applies if any of the following are true:\n\n* [JSON Web Tokens are enabled for login](https://matrix-org.github.io/synapse/latest/jwt.html) via the `jwt_config.enabled` configuration setting\n* The [local password database is enabled](https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#password_config) via the `password_config.enabled` and `password_config.localdb_enabled` configuration settings *and* a user's password is [updated via an admin API](https://matrix-org.github.io/synapse/latest/admin_api/user_admin_api.html#create-or-modify-account) after a user is deactivated.\n\n**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.\n\nInstallations 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.\n\n### Patches\n\n* If using JSON Web Token logins: #15624\n* For other users: #15634\n\n### Workarounds\n\nIf not using JSON Web Tokens, ensure that deactivated users do not have a password set. This list of users can be queried from PostgreSQL:\n\n```sql\nSELECT name FROM users WHERE password_hash IS NOT NULL AND deactivated = 1;\n```\n\n",
  "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_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "matrix-synapse"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.85.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/matrix-org/synapse/security/advisories/GHSA-26c5-ppr8-f33p"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-32682"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/matrix-org/synapse/issues/12274"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/matrix-org/synapse/pull/15624"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/matrix-org/synapse/pull/15634"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/matrix-org/synapse"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/matrix-org/synapse/releases/tag/v1.85.0"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2023-84.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X6DH5A5YEB5LRIPP32OUW25FCGZFCZU2"
  }, {
    "type" : "WEB",
    "url" : "https://matrix-org.github.io/synapse/latest/admin_api/user_admin_api.html#create-or-modify-account"
  }, {
    "type" : "WEB",
    "url" : "https://matrix-org.github.io/synapse/latest/jwt.html"
  }, {
    "type" : "WEB",
    "url" : "https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#password_config"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-287" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-06-06T16:40:42Z",
    "nvd_published_at" : "2023-06-06T19:15:11Z"
  }
}