CVE-2023-28837
What it is
Wagtail is an open source content management system built on Django. Prior to versions 4.1.4 and 4.2.2, a memory exhaustion bug exists in Wagtail's handling of uploaded images and documents. For both images and documents, files are loaded into memory during upload for additional processing. A user with access to upload images or documents through the Wagtail admin interface could upload a file so large that it results in a crash of denial of service. The vulnerability is not exploitable by an ordinary site visitor without access to the Wagtail admin. It can only be exploited by admin users with permission to upload images or documents. Image uploads are restricted to 10MB by default, however this validation only happens on the frontend and on the backend after the vulnerable code. Patched versions have been released as Wagtail 4.1.4 and Wagtail 4.2.2). Site owners who are unable to upgrade to the new versions are encouraged to add extra protections outside of Wagtail to limit the size of uploaded files.
At a glance
- Exploitability
- Can be exploited over the network with an admin-level account. High risk of service disruption.
- Exploit odds
- 1.1% 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: 1.1% in the next 30 days (EPSS).
- Severity: 4.9 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 1.1% · EPSS, next 30 days
- Weakness
- CWE-400 · Uncontrolled resource consumption
- Record status
- Modified
Affected
- Torchbox Wagtail < 4.1.4
- Torchbox Wagtail < 4.2.2
Attack profile CVSS 3.1 · 4.9
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
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-2023-28837.md and follow it. Check whether this project is affected by CVE-2023-28837. 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://github.com/wagtail/wagtail/commit/3c0c64642b9e5b8d28b111263c7f4bddad6c3880
- https://github.com/wagtail/wagtail/commit/c9d2fcd650a88d76ae122646142245e5927a9165
- https://github.com/wagtail/wagtail/commit/cfa11bbe00dbe7ce8cd4c0bbfe2a898a690df2bf
- https://github.com/wagtail/wagtail/commit/d4022310cbe497993459c3136311467c7ac6329a
- https://github.com/wagtail/wagtail/releases/tag/v4.1.4
- https://github.com/wagtail/wagtail/releases/tag/v4.2.2
- https://github.com/wagtail/wagtail/security/advisories/GHSA-33pv-vcgh-jfg9
- https://github.com/wagtail/wagtail/commit/3c0c64642b9e5b8d28b111263c7f4bddad6c3880
- https://github.com/wagtail/wagtail/commit/c9d2fcd650a88d76ae122646142245e5927a9165
- https://github.com/wagtail/wagtail/commit/cfa11bbe00dbe7ce8cd4c0bbfe2a898a690df2bf
References
- https://docs.wagtail.org/en/stable/reference/settings.html#wagtailimages-max-upload-size
- https://github.com/wagtail/wagtail/commit/3c0c64642b9e5b8d28b111263c7f4bddad6c3880
- https://github.com/wagtail/wagtail/commit/c9d2fcd650a88d76ae122646142245e5927a9165
- https://github.com/wagtail/wagtail/commit/cfa11bbe00dbe7ce8cd4c0bbfe2a898a690df2bf
- https://github.com/wagtail/wagtail/commit/d4022310cbe497993459c3136311467c7ac6329a
- https://github.com/wagtail/wagtail/releases/tag/v4.1.4
- https://github.com/wagtail/wagtail/releases/tag/v4.2.2
- https://github.com/wagtail/wagtail/security/advisories/GHSA-33pv-vcgh-jfg9
- https://docs.wagtail.org/en/stable/reference/settings.html#wagtailimages-max-upload-size
- https://github.com/wagtail/wagtail/commit/3c0c64642b9e5b8d28b111263c7f4bddad6c3880
- https://github.com/wagtail/wagtail/commit/c9d2fcd650a88d76ae122646142245e5927a9165
- https://github.com/wagtail/wagtail/commit/cfa11bbe00dbe7ce8cd4c0bbfe2a898a690df2bf
- https://github.com/wagtail/wagtail/commit/d4022310cbe497993459c3136311467c7ac6329a
- https://github.com/wagtail/wagtail/releases/tag/v4.1.4
- https://github.com/wagtail/wagtail/releases/tag/v4.2.2
- https://github.com/wagtail/wagtail/security/advisories/GHSA-33pv-vcgh-jfg9