Vulnerability in Djangoproject Django
CVE-2018-7536
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. The django.utils.html.urlize() function was extremely slow to evaluate certain inputs due to catastrophic backtracking vulnerabilities in two regular expressions (only one regular expression for Django 1.8.x). The urlize() function is used to implement the urlize and urlizetrunc template filters, which were thus vulnerable.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.046 (91.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.045 · newest: 0.046 · change: +0.000
Affected products
- Djangoproject Django
- Canonical Ubuntu Linux — versions 14.04, 16.04, 17.10
- Debian Linux — versions 7.0, 8.0, 9.0
- Red Hat OpenStack — versions 10, 13
Weakness classification (CWE)
Public proof-of-concept exploits
References
- usn.ubuntu.com/3591-1/ (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2019:0051 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/03/msg00006.html (mailing-list, Mailing List, Third Party Advisory)
- www.securityfocus.com/bid/103361 (VDB Entry, Third Party Advisory, vdb-entry)
- www.djangoproject.com/weblog/2018/mar/06/security-releases/ (Release Notes, Vendor Advisory)
- access.redhat.com/errata/RHSA-2019:0082 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:2927 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2019:0265 (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2018/dsa-4161 (vendor-advisory, Third Party Advisory)
- github.com/django/django/commit/1ca63a66ef3163149ad822701273e8a1844192c2
Frequently asked questions
- What is CVE-2018-7536?
- CVE-2018-7536 is a medium-severity vulnerability in Djangoproject Django, classified under Incorrect Regular Expression. CVSS score: 5.3/10. Published 2018-03-09.
- How severe is CVE-2018-7536?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2018-7536 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.