pysec-2018-6
Vulnerability from pysec
Published
2018-03-09 20:29
Modified
2021-06-10 06:52
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. If django.utils.text.Truncator's chars() and words() methods were passed the html=True argument, they were extremely slow to evaluate certain inputs due to a catastrophic backtracking vulnerability in a regular expression. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which were thus vulnerable.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "django",
        "purl": "pkg:pypi/django"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.8"
            },
            {
              "fixed": "1.8.19"
            },
            {
              "introduced": "1.11"
            },
            {
              "fixed": "1.11.11"
            },
            {
              "introduced": "2.0"
            },
            {
              "fixed": "2.0.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.11",
        "1.11.1",
        "1.11.10",
        "1.11.2",
        "1.11.3",
        "1.11.4",
        "1.11.5",
        "1.11.6",
        "1.11.7",
        "1.11.8",
        "1.11.9",
        "1.8",
        "1.8.1",
        "1.8.10",
        "1.8.11",
        "1.8.12",
        "1.8.13",
        "1.8.14",
        "1.8.15",
        "1.8.16",
        "1.8.17",
        "1.8.18",
        "1.8.2",
        "1.8.3",
        "1.8.4",
        "1.8.5",
        "1.8.6",
        "1.8.7",
        "1.8.8",
        "1.8.9",
        "2.0",
        "2.0.1",
        "2.0.2"
      ]
    }
  ],
  "aliases": [
    "CVE-2018-7537",
    "GHSA-2f9x-5v75-3qv4"
  ],
  "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. If django.utils.text.Truncator\u0027s chars() and words() methods were passed the html=True argument, they were extremely slow to evaluate certain inputs due to a catastrophic backtracking vulnerability in a regular expression. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which were thus vulnerable.",
  "id": "PYSEC-2018-6",
  "modified": "2021-06-10T06:52:11.564894Z",
  "published": "2018-03-09T20:29:00Z",
  "references": [
    {
      "type": "ARTICLE",
      "url": "https://www.djangoproject.com/weblog/2018/mar/06/security-releases/"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2018/03/msg00006.html"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/103357"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3591-1/"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.debian.org/security/2018/dsa-4161"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2018:2927"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2019:0265"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-2f9x-5v75-3qv4"
    }
  ]
}


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