vulnwire
5.3med

CVE-2018-7536

Django denial-of-service possibility in urlize and urlizetrunc template filters

Also known as GHSA-r28v-mw67-m5p9, PYSEC-2018-5

Published 8 y ago · modified 4 mo ago · JSON

CVSS
5.3
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
4.6%
percentile 92%
Public exploits
0
none known

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.

Exploit prediction (EPSS)

4.55% probability of exploitation in the next 30 days, higher than 92% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.05.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD2.05.0AV:N/AC:L/Au:N/C:N/I:N/A:P
GitHub3.05.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected packages

EcosystemPackageAffectedFixed in
pypidjango
>=2.0a1, <2.0.3
>=1.11a1, <1.11.11
>=1.8a1, <1.8.19
>=1.8, <1.8.19
>=1.11, <1.11.11
>=2.0, <2.0.3
2.0.3
1.11.11
1.8.19

Classification

Weakness
  • CWE-185 Incorrect Regular Expression
Technology feeds
Django (RSS, critical only)

References

  • usn.ubuntu.com /3591-1/ · vendor-advisory, x_transferred
  • access.redhat.com /errata/RHSA-2019:0051 · vendor-advisory, x_transferred
  • lists.debian.org /debian-lts-announce/2018/03/msg00006.html · mailing-list, x_transferred
  • securityfocus.com /bid/103361 · vdb-entry, x_transferred
  • djangoproject.com /weblog/2018/mar/06/security-releases/ · x_transferred
  • access.redhat.com /errata/RHSA-2019:0082 · vendor-advisory, x_transferred
  • access.redhat.com /errata/RHSA-2018:2927 · vendor-advisory, x_transferred
  • access.redhat.com /errata/RHSA-2019:0265 · vendor-advisory, x_transferred
  • debian.org /security/2018/dsa-4161 · vendor-advisory, x_transferred
  • github.com /django/django/commit/1ca63a66ef3163149ad822701273e8a1844192c2 · x_transferred
  • github.com /django/django/commit/abf89d729f210c692a50e0ad3f75fb6bec6fae16 · x_transferred
  • github.com /django/django/commit/e157315da3ae7005fa0683ffc9751dbeca7306c8 · x_transferred
  • nvd.nist.gov /vuln/detail/CVE-2018-7536 · advisory
  • github.com /advisories/GHSA-r28v-mw67-m5p9 · advisory
  • github.com /django/django · package
  • github.com /pypa/advisory-database/tree/main/vulns/django/PYSEC-2018-5.yaml · web
  • usn.ubuntu.com /3591-1 · web
  • web.archive.org /web/20200227131019/http://www.securityfocus.com/bid/103361 · web
  • djangoproject.com /weblog/2018/mar/06/security-releases · web

Sources

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