CVE-2019-14235 — An issue was discovered in Django 1

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 passed certain inputs, django.utils.encoding.uri_to_iri could lead to significant memory usage due to a recursion when repercent-encoding invalid UTF-8 octet sequences.

01What is this vulnerability?

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 passed certain inputs, django.utils.encoding.uri_to_iri could lead to significant memory usage due to a recursion when repercent-encoding invalid UTF-8 octet sequences.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-08-02T14:34:22.000Z
• Last modified: 2024-08-05T00:12:42.608Z

09References

• docs.djangoproject.com — https://docs.djangoproject.com/en/dev/releases/security/
• groups.google.com — https://groups.google.com/forum/#%21topic/django-announce/jIoju2-KLDs
• www.djangoproject.com — https://www.djangoproject.com/weblog/2019/aug/01/security-releases/
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00006.html
• seclists.org — https://seclists.org/bugtraq/2019/Aug/15
• www.debian.org — https://www.debian.org/security/2019/dsa-4498
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00025.html
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• security.netapp.com — https://security.netapp.com/advisory/ntap-20190828-0002/
• security.gentoo.org — https://security.gentoo.org/glsa/202004-17