UBUNTU-CVE-2023-40187

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    UBUNTU-CVE-2023-40187

    Published: 31 Aug 2023Last Modified: 16 Jul 2025
    Upstream:
    CVE-2023-40187

    Summary:

    Details: FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions of the 3.x beta branch are subject to a Use-After-Free issue in the `avc420_ensure_buffer` and `avc444_ensure_buffer` functions. If the value of `piDstSize[x]` is 0, `ppYUVDstData[x]` will be freed. However, in this case `ppYUVDstData[x]` will not have been updated which leads to a Use-After-Free vulnerability. This issue has been addressed in version 3.0.0-beta3. Users of the 3.x beta releases are advised to upgrade. There are no known workarounds for this vulnerability.

    References: https://ubuntu.com/security/CVE-2023-40187, https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-pwf9-v5p9-ch4f, https://github.com/FreeRDP/FreeRDP/blob/5be5553e0da72178a4b94cc1ffbdace9ceb153e5/libfreerdp/codec/h264.c#L413-L427, https://www.cve.org/CVERecord?id=CVE-2023-40187

    Affected packages

    Package

    Name: freerdp2

    Purl: pkg:deb/ubuntu/[email protected]+dfsg1-0ubuntu0.20.04.4?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.2.0+dfsg1-0ubuntu0.20.04.4

    Affected versions

    2.0.0~git20190204.1.2693389a+dfsg1-1
    2.0.0~git20190204.1.2693389a+dfsg1-2
    2.0.0~git20190204.1.2693389a+dfsg1-2build1
    2.0.0~git20190204.1.2693389a+dfsg1-2build2

    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-2023-40187 | CVE-DB