ghsa-2f9x-5v75-3qv4
Vulnerability from github
Published
2019-01-04 17:50
Modified
2024-09-17 15:09
Severity ?
5.3 (Medium) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
2.7 (Low) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U
2.7 (Low) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U
Summary
Django Denial-of-service possibility in truncatechars_html and truncatewords_html 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. 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.
{ "affected": [ { "package": { "ecosystem": "PyPI", "name": "Django" }, "ranges": [ { "events": [ { "introduced": "2.0" }, { "fixed": "2.0.3" } ], "type": "ECOSYSTEM" } ] }, { "package": { "ecosystem": "PyPI", "name": "Django" }, "ranges": [ { "events": [ { "introduced": "1.11" }, { "fixed": "1.11.11" } ], "type": "ECOSYSTEM" } ] }, { "package": { "ecosystem": "PyPI", "name": "Django" }, "ranges": [ { "events": [ { "introduced": "1.8" }, { "fixed": "1.8.19" } ], "type": "ECOSYSTEM" } ] } ], "aliases": [ "CVE-2018-7537" ], "database_specific": { "cwe_ids": [ "CWE-185" ], "github_reviewed": true, "github_reviewed_at": "2020-06-16T20:51:51Z", "nvd_published_at": null, "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. 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": "GHSA-2f9x-5v75-3qv4", "modified": "2024-09-17T15:09:40Z", "published": "2019-01-04T17:50:00Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-7537" }, { "type": "WEB", "url": "https://github.com/django/django/commit/94c5da1d17a6b0d378866c66b605102c19f7988c" }, { "type": "WEB", "url": "https://github.com/django/django/commit/a91436360b79a6ff995c3e5018bcc666dfaf1539" }, { "type": "WEB", "url": "https://github.com/django/django/commit/d17974a287a6ea2e361daff88fcc004cbd6835fa" }, { "type": "WEB", "url": "https://access.redhat.com/errata/RHSA-2018:2927" }, { "type": "WEB", "url": "https://access.redhat.com/errata/RHSA-2019:0265" }, { "type": "ADVISORY", "url": "https://github.com/advisories/GHSA-2f9x-5v75-3qv4" }, { "type": "PACKAGE", "url": "https://github.com/django/django" }, { "type": "WEB", "url": "https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2018-6.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://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:N/VA:L/SC:N/SI:N/SA:N/E:U", "type": "CVSS_V4" } ], "summary": "Django Denial-of-service possibility in truncatechars_html and truncatewords_html template filters" }
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