USN-4975-1 (UBUNTU-CVE-2021-32052)

Vulnerability from osv_ubuntu – Published: 2021-06-02 10:49 – Updated: 2026-02-10 04:42 – Source website
VLAI
Summary
python-django vulnerabilities
Details

It was discovered that the Django URLValidator function incorrectly handled newlines and tabs. A remote attacker could possibly use this issue to perform a header injection attack. This issue only affected Ubuntu 20.04 LTS, Ubuntu 20.10, and Ubuntu 21.04. (CVE-2021-32052)

Rasmus Lerchedahl Petersen and Rasmus Wriedt Larsen discovered that Django incorrectly handled path sanitation in admindocs. A remote attacker could possibly use this issue to determine the existence of arbitrary files and in certain configurations obtain their contents. (CVE-2021-33203)

It was discovered that Django incorrectly handled IPv4 addresses with leading zeros. A remote attacker could possibly use this issue to perform a wide variety of attacks, including bypassing certain access restrictions. (CVE-2021-33571)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-33203",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "python-django",
            "binary_version": "1:1.11.11-1ubuntu1.14"
          },
          {
            "binary_name": "python-django-common",
            "binary_version": "1:1.11.11-1ubuntu1.14"
          },
          {
            "binary_name": "python3-django",
            "binary_version": "1:1.11.11-1ubuntu1.14"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "python-django",
        "purl": "pkg:deb/ubuntu/python-django@1:1.11.11-1ubuntu1.14?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:1.11.11-1ubuntu1.14"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:1.11.4-1ubuntu1",
        "1:1.11.6-1ubuntu1",
        "1:1.11.9-1ubuntu1",
        "1:1.11.11-1ubuntu1",
        "1:1.11.11-1ubuntu1.1",
        "1:1.11.11-1ubuntu1.2",
        "1:1.11.11-1ubuntu1.3",
        "1:1.11.11-1ubuntu1.4",
        "1:1.11.11-1ubuntu1.5",
        "1:1.11.11-1ubuntu1.6",
        "1:1.11.11-1ubuntu1.7",
        "1:1.11.11-1ubuntu1.8",
        "1:1.11.11-1ubuntu1.9",
        "1:1.11.11-1ubuntu1.10",
        "1:1.11.11-1ubuntu1.11",
        "1:1.11.11-1ubuntu1.12",
        "1:1.11.11-1ubuntu1.13"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-32052",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-33203",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-33571",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "python3-django",
            "binary_version": "2:2.2.12-1ubuntu0.7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "python-django",
        "purl": "pkg:deb/ubuntu/python-django@2:2.2.12-1ubuntu0.7?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:2.2.12-1ubuntu0.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:1.11.22-1ubuntu1",
        "2:2.2.6-1ubuntu1",
        "2:2.2.9-2ubuntu1",
        "2:2.2.10-1",
        "2:2.2.10-1ubuntu1",
        "2:2.2.11-1",
        "2:2.2.12-1",
        "2:2.2.12-1ubuntu0.1",
        "2:2.2.12-1ubuntu0.2",
        "2:2.2.12-1ubuntu0.3",
        "2:2.2.12-1ubuntu0.4",
        "2:2.2.12-1ubuntu0.5",
        "2:2.2.12-1ubuntu0.6"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that the Django URLValidator function incorrectly handled\nnewlines and tabs. A remote attacker could possibly use this issue to\nperform a header injection attack. This issue only affected Ubuntu 20.04\nLTS, Ubuntu 20.10, and Ubuntu 21.04. (CVE-2021-32052)\n\nRasmus Lerchedahl Petersen and Rasmus Wriedt Larsen discovered that Django\nincorrectly handled path sanitation in admindocs. A remote attacker could\npossibly use this issue to determine the existence of arbitrary files and\nin certain configurations obtain their contents. (CVE-2021-33203)\n\nIt was discovered that Django incorrectly handled IPv4 addresses with\nleading zeros. A remote attacker could possibly use this issue to perform a\nwide variety of attacks, including bypassing certain access restrictions.\n(CVE-2021-33571)\n",
  "id": "USN-4975-1",
  "modified": "2026-02-10T04:42:12Z",
  "published": "2021-06-02T10:49:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4975-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-32052"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-33203"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-33571"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "python-django vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2021-32052",
    "UBUNTU-CVE-2021-33203",
    "UBUNTU-CVE-2021-33571"
  ]
}



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