UBUNTU-CVE-2021-41688

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    UBUNTU-CVE-2021-41688

    Published: 28 Jun 2022Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-41688

    Summary:

    Details: DCMTK through 3.6.6 does not handle memory free properly. The object in the program is free but its address is still used in other locations. Sending specific requests to the dcmqrdb program will incur a double free. An attacker can use it to launch a DoS attack.

    References: https://ubuntu.com/security/CVE-2021-41688, https://github.com/DCMTK/dcmtk/commit/a9697dfeb672b0b9412c00c7d36d801e27ec85cb, https://github.com/DCMTK/dcmtk, https://github.com/DCMTK/dcmtk/commit/a9697dfeb672b0b9412c00c7d36d801e27ec85cb, https://ubuntu.com/security/notices/USN-5882-1, https://www.cve.org/CVERecord?id=CVE-2021-41688, https://ubuntu.com/security/notices/USN-7010-1

    Affected packages

    Package

    Name: dcmtk

    Purl: pkg:deb/ubuntu/[email protected]~20150924-5ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.6.1~20150924-5ubuntu0.1~esm1

    Affected versions

    3.6.0-15.1
    3.6.1~20150629-5
    3.6.1~20150924-4
    3.6.1~20150924-5

    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-2021-41688 | CVE-DB