ghsa-r28v-mw67-m5p9
Vulnerability from github
Published
2019-01-04 17:50
Modified
2024-09-18 19:45
Severity ?
5.3 (Medium) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
6.9 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Summary
Django denial-of-service possibility in urlize and urlizetrunc template filters
Details

An issue was discovered in Django 2.0 before 2.0.3, 1.11 before 1.11.11, and 1.8 before 1.8.19. The django.utils.html.urlize() function was extremely slow to evaluate certain inputs due to catastrophic backtracking vulnerabilities in two regular expressions (only one regular expression for Django 1.8.x). The urlize() function is used to implement the urlize and urlizetrunc template filters, which were thus vulnerable.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "Django"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0a1"
            },
            {
              "fixed": "2.0.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "Django"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.11a1"
            },
            {
              "fixed": "1.11.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "Django"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.8a1"
            },
            {
              "fixed": "1.8.19"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2018-7536"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-185"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-16T21:53:19Z",
    "nvd_published_at": "2018-03-09T20:29:00Z",
    "severity": "MODERATE"
  },
  "details": "An issue was discovered in Django 2.0 before 2.0.3, 1.11 before 1.11.11, and 1.8 before 1.8.19. The `django.utils.html.urlize()` function was extremely slow to evaluate certain inputs due to catastrophic backtracking vulnerabilities in two regular expressions (only one regular expression for Django 1.8.x). The `urlize()` function is used to implement the urlize and urlizetrunc template filters, which were thus vulnerable.",
  "id": "GHSA-r28v-mw67-m5p9",
  "modified": "2024-09-18T19:45:18Z",
  "published": "2019-01-04T17:50:07Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-7536"
    },
    {
      "type": "WEB",
      "url": "https://github.com/django/django/commit/1ca63a66ef3163149ad822701273e8a1844192c2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/django/django/commit/abf89d729f210c692a50e0ad3f75fb6bec6fae16"
    },
    {
      "type": "WEB",
      "url": "https://github.com/django/django/commit/e157315da3ae7005fa0683ffc9751dbeca7306c8"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2018:2927"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2019:0051"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2019:0082"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2019:0265"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-r28v-mw67-m5p9"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/django/django"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2018-5.yaml"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2018/03/msg00006.html"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3591-1"
    },
    {
      "type": "WEB",
      "url": "https://web.archive.org/web/20200227131019/http://www.securityfocus.com/bid/103361"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2018/dsa-4161"
    },
    {
      "type": "WEB",
      "url": "https://www.djangoproject.com/weblog/2018/mar/06/security-releases"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Django denial-of-service possibility in urlize and urlizetrunc template filters"
}


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