CVE-2021-41690

    Dashboard / Vulnerabilities / CVE-2021-41690

    CVE-2021-41690

    Published: 28 Jun 2022Last Modified: 7 Aug 2026

    Summary:

    Details: DCMTK through 3.6.6 does not handle memory free properly. The malloced memory for storing all file information are recorded in a global variable LST and are not freed properly. Sending specific requests to the dcmqrdb program can incur a memory leak. An attacker can use it to launch a DoS attack.

    References: https://lists.debian.org/debian-lts-announce/2024/06/msg00022.html, https://lists.debian.org/debian-lts-announce/2025/01/msg00032.html, https://github.com/DCMTK/dcmtk/commit/a9697dfeb672b0b9412c00c7d36d801e27ec85cb, https://github.com/DCMTK/dcmtk

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    DCMTK-3.6.5
    DCMTK-3.6.6
    DCMTK-3.6.5+_20191213
    DCMTK-3.6.4
    DCMTK-3.6.3
    DCMTK-3.6.2
    DCMTK-3.6.1_20170228
    DCMTK-3.6.1_20161102
    DCMTK-3.6.1_20160630
    DCMTK-3.6.1_20160216
    DCMTK-3.6.1_20150924
    DCMTK-3.6.1_20150629
    DCMTK-3.6.1_20150217
    DCMTK-3.6.1_20140617
    DCMTK-3.6.1_20131114
    DCMTK-3.6.1_20121102
    DCMTK-3.6.1_20120831
    DCMTK-3.6.1_20120515
    DCMTK-3.6.1_20120222
    DCMTK-3.6.1_20111208
    DCMTK-3.6.1_20110922
    DCMTK-3.6.1_20110707
    DCMTK-3.6.1_20110519
    DCMTK-3.6.1_20110225
    DCMTK-3.6.0

    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
    CVE-2021-41690 | CVE-DB