CVE-2018-7537
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. Limited direct impact.
- Exploit odds
- 4.4% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 4.4% in the next 30 days (EPSS).
- Severity: 5.3 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 4.4% · EPSS, next 30 days
- Weakness
- CWE-185
- Record status
- Modified
Affected
- Canonical Ubuntu Linux 14.04
- Canonical Ubuntu Linux 16.04
- Canonical Ubuntu Linux 17.10
- Djangoproject Django < 1.8.19
- Djangoproject Django < 1.11.11
- Djangoproject Django < 2.0.3
- Debian Linux 7.0
- Debian Linux 8.0
Attack profile CVSS 3.0 · 5.3
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
Raw vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2018-7537.md and follow it. Check whether this project is affected by CVE-2018-7537. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://www.djangoproject.com/weblog/2018/mar/06/security-releases/
- https://www.djangoproject.com/weblog/2018/mar/06/security-releases/
References
- http://www.securityfocus.com/bid/103357
- https://access.redhat.com/errata/RHSA-2018:2927
- https://access.redhat.com/errata/RHSA-2019:0265
- https://lists.debian.org/debian-lts-announce/2018/03/msg00006.html
- https://usn.ubuntu.com/3591-1/
- https://www.debian.org/security/2018/dsa-4161
- https://www.djangoproject.com/weblog/2018/mar/06/security-releases/
- http://www.securityfocus.com/bid/103357
- https://access.redhat.com/errata/RHSA-2018:2927
- https://access.redhat.com/errata/RHSA-2019:0265
- https://lists.debian.org/debian-lts-announce/2018/03/msg00006.html
- https://usn.ubuntu.com/3591-1/
- https://www.debian.org/security/2018/dsa-4161
- https://www.djangoproject.com/weblog/2018/mar/06/security-releases/