Vulnerability-Lookup

OESA-2023-1722 (CVE-2023-43665)

Vulnerability from osv_openeuler – Published: 2023-10-13 11:06 – Updated: 2026-08-06 11:06 – Source website

Summary

python-django security update

Details

Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design.

Security Fix(es):

An inefficient regular expression complexity was found in Django. The text truncator regular expressions exhibit linear backtracking complexity, which can be slow, leading to a potential denial of service, given certain HTML inputs.(CVE-2023-43665)

Severity

5.3 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2023-43665	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "noarch": [
          "python3-Django-2.2.27-8.oe1.noarch.rpm",
          "python-django-help-2.2.27-8.oe1.noarch.rpm"
        ],
        "src": [
          "python-django-2.2.27-8.oe1.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "python-django",
        "purl": "pkg:rpm/openEuler/python-django\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.27-8.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "noarch": [
          "python-django-help-2.2.27-8.oe1.noarch.rpm",
          "python3-Django-2.2.27-8.oe1.noarch.rpm"
        ],
        "src": [
          "python-django-2.2.27-8.oe1.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP3",
        "name": "python-django",
        "purl": "pkg:rpm/openEuler/python-django\u0026distro=openEuler-20.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.27-8.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "noarch": [
          "python3-Django-2.2.27-8.oe2203.noarch.rpm",
          "python-django-help-2.2.27-8.oe2203.noarch.rpm",
          "python3-Django-3.2.12-7.oe2203sp1.noarch.rpm",
          "python-django-help-3.2.12-7.oe2203sp1.noarch.rpm",
          "python3-Django-3.2.12-7.oe2203sp2.noarch.rpm",
          "python-django-help-3.2.12-7.oe2203sp2.noarch.rpm"
        ],
        "src": [
          "python-django-2.2.27-8.oe2203.src.rpm",
          "python-django-3.2.12-7.oe2203sp1.src.rpm",
          "python-django-3.2.12-7.oe2203sp2.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS",
        "name": "python-django",
        "purl": "pkg:rpm/openEuler/python-django\u0026distro=openEuler-22.03-LTS"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.2.12-7.oe2203sp2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "noarch": [
          "python3-Django-3.2.12-7.oe2203sp1.noarch.rpm",
          "python-django-help-3.2.12-7.oe2203sp1.noarch.rpm"
        ],
        "src": [
          "python-django-3.2.12-7.oe2203sp1.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP1",
        "name": "python-django",
        "purl": "pkg:rpm/openEuler/python-django\u0026distro=openEuler-22.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.2.12-7.oe2203sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "noarch": [
          "python3-Django-3.2.12-7.oe2203sp2.noarch.rpm",
          "python-django-help-3.2.12-7.oe2203sp2.noarch.rpm"
        ],
        "src": [
          "python-django-3.2.12-7.oe2203sp2.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP2",
        "name": "python-django",
        "purl": "pkg:rpm/openEuler/python-django\u0026distro=openEuler-22.03-LTS-SP2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.2.12-7.oe2203sp2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design.\r\n\r\nSecurity Fix(es):\r\n\r\nAn inefficient regular expression complexity was found in Django. The text truncator regular expressions exhibit linear backtracking complexity, which can be slow, leading to a potential denial of service, given certain HTML inputs.(CVE-2023-43665)",
  "id": "OESA-2023-1722",
  "modified": "2026-08-06T11:06:10Z",
  "published": "2023-10-13T11:06:10Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1722"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-43665"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "python-django security update",
  "upstream": [
    "CVE-2023-43665"
  ]
}

CVE-2023-43665 (GCVE-0-2023-43665)

Vulnerability from cvelistv5 – Published: 2023-11-03 00:00 – Updated: 2025-11-04 17:12

Summary

In Django 3.2 before 3.2.22, 4.1 before 4.1.12, and 4.2 before 4.2.6, the django.utils.text.Truncator chars() and words() methods (when used with html=True) are subject to a potential DoS (denial of service) attack via certain inputs with very long, potentially malformed HTML text. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which are thus also vulnerable. NOTE: this issue exists because of an incomplete fix for CVE-2019-14232.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

8 references

URL	Tags
https://groups.google.com/forum/#%21forum/django-…
https://docs.djangoproject.com/en/4.2/releases/se…
https://www.djangoproject.com/weblog/2023/oct/04/…
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://security.netapp.com/advisory/ntap-2023122…
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
http://www.openwall.com/lists/oss-security/2024/03/04/1	mailing-list
https://lists.fedoraproject.org/archives/list/pac…

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-04T17:12:41.936Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://groups.google.com/forum/#%21forum/django-announce"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://docs.djangoproject.com/en/4.2/releases/security/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.djangoproject.com/weblog/2023/oct/04/security-releases/"
          },
          {
            "name": "FEDORA-2023-a67af7d8f4",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HJFRPUHDYJHBH3KYHSPGULQM4JN7BMSU/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20231221-0001/"
          },
          {
            "name": "FEDORA-2024-84fbbbb914",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZQJOMNRMVPCN5WMIZ7YSX5LQ7IR2NY4D/"
          },
          {
            "name": "[oss-security] 20240304 Django: CVE-2024-27351: Potential regular expression denial-of-service in django.utils.text.Truncator.words()",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2024/03/04/1"
          },
          {
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZQJOMNRMVPCN5WMIZ7YSX5LQ7IR2NY4D/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In Django 3.2 before 3.2.22, 4.1 before 4.1.12, and 4.2 before 4.2.6, the django.utils.text.Truncator chars() and words() methods (when used with html=True) are subject to a potential DoS (denial of service) attack via certain inputs with very long, potentially malformed HTML text. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which are thus also vulnerable. NOTE: this issue exists because of an incomplete fix for CVE-2019-14232."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-05-01T17:09:51.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://groups.google.com/forum/#%21forum/django-announce"
        },
        {
          "url": "https://docs.djangoproject.com/en/4.2/releases/security/"
        },
        {
          "url": "https://www.djangoproject.com/weblog/2023/oct/04/security-releases/"
        },
        {
          "name": "FEDORA-2023-a67af7d8f4",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HJFRPUHDYJHBH3KYHSPGULQM4JN7BMSU/"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20231221-0001/"
        },
        {
          "name": "FEDORA-2024-84fbbbb914",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZQJOMNRMVPCN5WMIZ7YSX5LQ7IR2NY4D/"
        },
        {
          "name": "[oss-security] 20240304 Django: CVE-2024-27351: Potential regular expression denial-of-service in django.utils.text.Truncator.words()",
          "tags": [
            "mailing-list"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2024/03/04/1"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2023-43665",
    "datePublished": "2023-11-03T00:00:00.000Z",
    "dateReserved": "2023-09-20T00:00:00.000Z",
    "dateUpdated": "2025-11-04T17:12:41.936Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

OESA-2023-1722 (CVE-2023-43665)

CVE-2023-43665 (GCVE-0-2023-43665)

Tags

Sightings

Nomenclature

Related by attack behaviour