CVE-2018-7537

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 truncatecharshtml and truncatewordshtml template filters, which were thus vulnerable.

References

Affected packages

Git / github.com/django/django

Affected ranges

Type

GIT

Repo

https://github.com/django/django

Events

Introduced

6a0dc2176f4ebf907e124d433411e52bba39a28e

Fixed

c686dd8e6bb3817bcf04b8f13c025b4d3c3dc6dc

Introduced

c669cf279ae7b3e02a61db4fb077030a4db80e4f

Fixed

1cc5aceac0a73468a6d1a671b9c86423e5bcf011

Introduced

8c85c8692240e5ae4b568eb4272475fe1fa4b059

Fixed

2d73ffc6f96e399716a1ed3f58acd4e99afa3d33

Database specific

{
    "versions": [
        {
            "introduced": "1.8"
        },
        {
            "fixed": "1.8.19"
        },
        {
            "introduced": "1.11"
        },
        {
            "fixed": "1.11.11"
        },
        {
            "introduced": "2.0"
        },
        {
            "fixed": "2.0.3"
        }
    ]
}

Database specific

unresolved_ranges

[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "14.04"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "16.04"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "17.10"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "7.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "8.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "9.0"
            }
        ]
    }
]

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-7537.json"