ubuntu-cve-2021-41690
Vulnerability from osv_ubuntu
Published
2022-06-28 13:15
Modified
2026-04-22 07:40
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.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "dcmtk",
            "binary_version": "3.6.1~20150924-5ubuntu0.1~esm1"
          },
          {
            "binary_name": "libdcmtk5",
            "binary_version": "3.6.1~20150924-5ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "dcmtk",
        "purl": "pkg:deb/ubuntu/dcmtk@3.6.1~20150924-5ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.6.1~20150924-5ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.6.0-15.1",
        "3.6.1~20150629-5",
        "3.6.1~20150924-4",
        "3.6.1~20150924-5"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "dcmtk",
            "binary_version": "3.6.2-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "libdcmtk12",
            "binary_version": "3.6.2-3ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "dcmtk",
        "purl": "pkg:deb/ubuntu/dcmtk@3.6.2-3ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.6.2-3ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.6.2-2",
        "3.6.2-2build1",
        "3.6.2-3",
        "3.6.2-3build1",
        "3.6.2-3build2",
        "3.6.2-3build3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "dcmtk",
            "binary_version": "3.6.4-2.1ubuntu0.1"
          },
          {
            "binary_name": "libdcmtk14",
            "binary_version": "3.6.4-2.1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "dcmtk",
        "purl": "pkg:deb/ubuntu/dcmtk@3.6.4-2.1ubuntu0.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.6.4-2.1ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.6.4-2.1",
        "3.6.4-2.1build1",
        "3.6.4-2.1build2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "dcmtk",
            "binary_version": "3.6.4-2.1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libdcmtk14",
            "binary_version": "3.6.4-2.1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "dcmtk",
        "purl": "pkg:deb/ubuntu/dcmtk@3.6.4-2.1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.6.4-2.1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.6.4-2.1",
        "3.6.4-2.1build1",
        "3.6.4-2.1build2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "dcmtk",
            "binary_version": "3.6.6-5ubuntu0.1~esm1"
          },
          {
            "binary_name": "libdcmtk16",
            "binary_version": "3.6.6-5ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "dcmtk",
        "purl": "pkg:deb/ubuntu/dcmtk@3.6.6-5ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.6.6-5ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.6.5-1",
        "3.6.6-3ubuntu1",
        "3.6.6-3ubuntu2",
        "3.6.6-4",
        "3.6.6-5"
      ]
    }
  ],
  "aliases": [],
  "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.",
  "id": "UBUNTU-CVE-2021-41690",
  "modified": "2026-04-22T07:40:10Z",
  "published": "2022-06-28T13:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-41690"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/DCMTK/dcmtk/commit/a9697dfeb672b0b9412c00c7d36d801e27ec85cb"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/DCMTK/dcmtk"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5882-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-41690"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7010-1"
    }
  ],
  "related": [
    "USN-5882-1",
    "USN-7010-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-41690"
  ]
}



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Detection rules are retrieved from Rulezet.