UBUNTU-CVE-2014-6053

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    UBUNTU-CVE-2014-6053

    Published: 24 Sept 2014Last Modified: 20 May 2026
    Upstream:
    CVE-2014-6053

    Summary:

    Details: The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer 0.9.9 and earlier does not properly handle attempts to send a large amount of ClientCutText data, which allows remote attackers to cause a denial of service (memory consumption or daemon crash) via a crafted message that is processed by using a single unchecked malloc.

    References: https://ubuntu.com/security/CVE-2014-6053, http://seclists.org/oss-sec/2014/q3/639, http://www.kde.org/info/security/advisory-20140923-1.txt, http://www.ocert.org/advisories/ocert-2014-007.html, https://ubuntu.com/security/notices/USN-2365-1, https://ubuntu.com/security/notices/USN-4573-1, https://ubuntu.com/security/notices/USN-4587-1, https://www.cve.org/CVERecord?id=CVE-2014-6053

    Affected packages

    Package

    Name: krfb

    Purl: pkg:deb/ubuntu/krfb?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4:4.13.3-0ubuntu1.1

    Affected versions

    4:4.11.2-0ubuntu1
    4:4.11.80-0ubuntu1
    4:4.11.95-0ubuntu1
    4:4.11.97-0ubuntu1

    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