Django Denial-of-service in django.utils.text.Truncator

高 7.5CVE-2019-14232 · GHSA-c4qh-4vgv-qc6g · PYSEC-2019-11 · 02/08/2019 公開 · 17/06/2026 更新

要点

CVE-2019-14232 は django, django (djangoproject) に影響する深刻度「高」 (CVSS 7.5) の脆弱性です。
今後30日間に悪用される確率（EPSS）：3.5%（全脆弱性の 89.3% より高い）。
対処：1.11.23, 2.1.11, 2.2.4 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
django PyPI	`≥ 1.11, < 1.11.23≥ 1.11a1, < 1.11.23≥ 2.1, < 2.1.11≥ 2.1a1, < 2.1.11≥ 2.2, < 2.2.4≥ 2.2a1, < 2.2.4`	`1.11.232.1.112.2.4`
django djangoproject	`≥ 1.11, < 1.11.23≥ 2.1, < 2.1.11≥ 2.2, < 2.2.4`	`1.11.232.1.112.2.4`

概要

An issue was discovered in Django 1.11.x before 1.11.23, 2.1.x before 2.1.11, and 2.2.x before 2.2.4. 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.

NVD の説明

An issue was discovered in Django 1.11.x before 1.11.23, 2.1.x before 2.1.11, and 2.2.x before 2.2.4. 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.