UBUNTU-CVE-2022-39335

    Dashboard / Vulnerabilities / UBUNTU-CVE-2022-39335

    UBUNTU-CVE-2022-39335

    Published: 26 May 2023Last Modified: 4 Feb 2026
    Upstream:
    CVE-2022-39335
    Aliases:
    USN-7444-1

    Summary:

    Details: Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. The Matrix Federation API allows remote homeservers to request the authorization events in a room. This is necessary so that a homeserver receiving some events can validate that those events are legitimate and permitted in their room. However, in versions of Synapse up to and including 1.68.0, a Synapse homeserver answering a query for authorization events does not sufficiently check that the requesting server should be able to access them. The issue was patched in Synapse 1.69.0. Homeserver administrators are advised to upgrade.

    References: https://ubuntu.com/security/CVE-2022-39335, https://github.com/matrix-org/synapse/issues/13288, https://github.com/matrix-org/synapse/security/advisories/GHSA-45cj-f97f-ggwv, https://github.com/matrix-org/synapse/pull/13823, https://www.cve.org/CVERecord?id=CVE-2022-39335, https://ubuntu.com/security/notices/USN-7444-1

    Affected packages

    Package

    Name: matrix-synapse

    Purl: pkg:deb/ubuntu/[email protected]+dfsg-1ubuntu0.1~esm4?arch=source&distro=esm-apps/bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    0.19.2+dfsg-6

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    UBUNTU-CVE-2022-39335 | CVE-DB