CVE-2018-25021

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    CVE-2018-25021

    Published: 13 Dec 2021Last Modified: 8 Jul 2026

    Summary:

    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: https://blog.tox.chat/2018/10/memory-leak-bug-and-new-toxcore-release-fixing-it/, https://github.com/TokTok/c-toxcore/pull/1216, https://github.com/TokTok/c-toxcore/issues/1214

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -3f35a84968f100e1e6d3c9df467fd3c82a9ebb13

    Affected versions

    v0.2.7
    v0.2.6
    v0.2.5
    v0.2.4
    v0.2.3
    v0.2.2
    v0.2.1
    v0.2.0

    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
    CVE-2018-25021 | CVE-DB