UBUNTU-CVE-2023-40181

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    UBUNTU-CVE-2023-40181

    Published: 31 Aug 2023Last Modified: 22 Apr 2026
    Upstream:
    CVE-2023-40181
    Aliases:
    USN-6401-1

    Summary:

    Details: FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Integer-Underflow leading to Out-Of-Bound Read in the `zgfx_decompress_segment` function. In the context of `CopyMemory`, it's possible to read data beyond the transmitted packet range and likely cause a crash. This issue has been addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this issue.

    References: https://ubuntu.com/security/CVE-2023-40181, https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mxp4-rx7x-h2g8, https://github.com/FreeRDP/FreeRDP/blob/2252d53001d9ce8a452f0a0a5b1f5ed9db6d57f1/libfreerdp/codec/zgfx.c#L256-L261, https://github.com/FreeRDP/FreeRDP/blob/2252d53001d9ce8a452f0a0a5b1f5ed9db6d57f1/libfreerdp/codec/zgfx.c#L334-L355, https://ubuntu.com/security/notices/USN-6401-1, https://www.cve.org/CVERecord?id=CVE-2023-40181

    Affected packages

    Package

    Name: freerdp2

    Purl: pkg:deb/ubuntu/[email protected]+dfsg1-0ubuntu0.18.04.4+esm1?arch=source&distro=esm-infra/bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.2.0+dfsg1-0ubuntu0.18.04.4+esm1

    Affected versions

    2.0.0~git20170725.1.1648deb+dfsg1-1
    2.0.0~git20170725.1.1648deb+dfsg1-5
    2.0.0~git20170725.1.1648deb+dfsg1-5ubuntu1
    2.0.0~git20170725.1.1648deb+dfsg1-5ubuntu2
    2.0.0~git20170725.1.1648deb+dfsg1-6
    2.0.0~git20170725.1.1648deb+dfsg1-6build1
    2.0.0~git20170725.1.1648deb+dfsg1-7
    2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1

    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-2023-40181 | CVE-DB