UBUNTU-CVE-2019-11842

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Source
https://ubuntu.com/security/CVE-2019-11842
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-11842.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2019-11842
Upstream
Downstream
Related
Published
2019-05-09T18:29:00Z
Modified
2025-07-16T07:39:22.191623Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

An issue was discovered in Matrix Sydent before 1.0.3 and Synapse before 0.99.3.1. Random number generation is mishandled, which makes it easier for attackers to predict a Sydent authentication token or a Synapse random ID.

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

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-11842.json"