UBUNTU-CVE-2018-12291

The ongetmissingevents function in handlers/federation.py in Matrix Synapse before 0.31.1 has a security bug in the getmissing_events federation API where event visibility rules were not applied correctly.

References

Affected packages

Ubuntu:Pro:18.04:LTS / matrix-synapse

Package

Name: matrix-synapse
Purl: pkg:deb/ubuntu/matrix-synapse@0.24.0+dfsg-1ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.24.0+dfsg-1ubuntu0.1~esm1

Affected versions

0.*

0.19.2+dfsg-6

0.24.0+dfsg-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "0.24.0+dfsg-1ubuntu0.1~esm1",
            "binary_name": "matrix-synapse"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}