UBUNTU-CVE-2021-41687

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    UBUNTU-CVE-2021-41687

    Published: 28 Jun 2022Last Modified: 31 Aug 2026
    Upstream:
    CVE-2021-41687

    Summary:

    Details: DCMTK through 3.6.6 does not handle memory free properly. The program malloc a heap memory for parsing data, but does not free it when error in parsing. Sending specific requests to the dcmqrdb program incur the memory leak. An attacker can use it to launch a DoS attack.

    References: https://ubuntu.com/security/CVE-2021-41687, 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-2021-41687, https://ubuntu.com/security/notices/USN-7010-1, https://ubuntu.com/security/notices/USN-7010-2

    Affected packages

    Package

    Name: dcmtk

    Purl: pkg:deb/ubuntu/dcmtk?arch=source&distro=esm-apps%2Fxenial

    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-2021-41687 | CVE-DB