UBUNTU-CVE-2022-39374

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    UBUNTU-CVE-2022-39374

    Published: 26 May 2023Last Modified: 4 Feb 2026
    Upstream:
    CVE-2022-39374
    Aliases:
    USN-7444-1

    Summary:

    Details: Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. If Synapse and a malicious homeserver are both joined to the same room, the malicious homeserver can trick Synapse into accepting previously rejected events into its view of the current state of that room. This can be exploited in a way that causes all further messages and state changes sent in that room from the vulnerable homeserver to be rejected. This issue has been patched in version 1.68.0

    References: https://ubuntu.com/security/CVE-2022-39374, https://bugzilla.redhat.com/show_bug.cgi?id=2209956, https://www.cve.org/CVERecord?id=CVE-2022-39374, https://ubuntu.com/security/notices/USN-7444-1

    Affected packages

    Package

    Name: matrix-synapse

    Purl: pkg:deb/ubuntu/[email protected]~esm2?arch=source&distro=esm-apps/focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.11.0-1ubuntu0.1~esm2

    Affected versions

    1.3.0-1

    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-2022-39374 | CVE-DB