| Name | CVE-2018-7537 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1303-1, DSA-4161-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| python-django (PTS) | jessie, jessie (lts) | 1.7.11-1+deb8u16 | fixed |
| stretch (security) | 1:1.10.7-2+deb9u17 | fixed | |
| stretch (lts), stretch | 1:1.10.7-2+deb9u21 | fixed | |
| buster | 1:1.11.29-1~deb10u1 | fixed | |
| buster (security) | 1:1.11.29-1+deb10u11 | fixed | |
| bullseye (security), bullseye | 2:2.2.28-1~deb11u2 | fixed | |
| bookworm (security), bookworm | 3:3.2.19-1+deb12u1 | fixed | |
| sid, trixie | 3:4.2.11-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| python-django | source | wheezy | 1.4.22-1+deb7u4 | DLA-1303-1 | ||
| python-django | source | jessie | 1.7.11-1+deb8u3 | DSA-4161-1 | ||
| python-django | source | stretch | 1:1.10.7-2+deb9u1 | DSA-4161-1 | ||
| python-django | source | (unstable) | 1:1.11.11-1 |
https://www.djangoproject.com/weblog/2018/mar/06/security-releases/
Patch https://github.com/django/django/commit/a91436360b79a6ff995c3e5018bcc666dfaf1539