UBUNTU-CVE-2018-25021

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Source
https://ubuntu.com/security/CVE-2018-25021
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-25021.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2018-25021
Upstream
Withdrawn
2025-07-18T16:44:52Z
Published
2021-12-13T01:15:00Z
Modified
2025-07-16T07:38:33.285401Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

The TCP Server module in toxcore before 0.2.8 doesn't free the TCP priority queue under certain conditions, which allows a remote attacker to exhaust the system's memory, causing a denial of service (DoS).

References

Affected packages

Ubuntu:20.04:LTS / libtoxcore

Package

Name
libtoxcore
Purl
pkg:deb/ubuntu/libtoxcore@0.2.10-1build2?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.2.10-1build2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libtoxcore-dev",
            "binary_version": "0.2.10-1build2"
        },
        {
            "binary_name": "libtoxcore2",
            "binary_version": "0.2.10-1build2"
        },
        {
            "binary_name": "libtoxcore2-dbgsym",
            "binary_version": "0.2.10-1build2"
        },
        {
            "binary_name": "toxcore-utils",
            "binary_version": "0.2.10-1build2"
        },
        {
            "binary_name": "toxcore-utils-dbgsym",
            "binary_version": "0.2.10-1build2"
        }
    ]
}