CVE-2023-28837
Wagtail Admin Image and Document Upload Denial of Service Vulnerability
Description
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.
INFO
Published Date :
April 3, 2023, 5:15 p.m.
Last Modified :
Nov. 7, 2023, 4:10 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
1.2
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-28837.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2023-28837 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-28837 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Changed Description 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. 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. -
Initial Analysis by [email protected]
Apr. 12, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://docs.wagtail.org/en/stable/reference/settings.html#wagtailimages-max-upload-size No Types Assigned https://docs.wagtail.org/en/stable/reference/settings.html#wagtailimages-max-upload-size Product Changed Reference Type https://github.com/wagtail/wagtail/commit/3c0c64642b9e5b8d28b111263c7f4bddad6c3880 No Types Assigned https://github.com/wagtail/wagtail/commit/3c0c64642b9e5b8d28b111263c7f4bddad6c3880 Patch Changed Reference Type https://github.com/wagtail/wagtail/commit/c9d2fcd650a88d76ae122646142245e5927a9165 No Types Assigned https://github.com/wagtail/wagtail/commit/c9d2fcd650a88d76ae122646142245e5927a9165 Release Notes Changed Reference Type https://github.com/wagtail/wagtail/commit/cfa11bbe00dbe7ce8cd4c0bbfe2a898a690df2bf No Types Assigned https://github.com/wagtail/wagtail/commit/cfa11bbe00dbe7ce8cd4c0bbfe2a898a690df2bf Patch Changed Reference Type https://github.com/wagtail/wagtail/commit/d4022310cbe497993459c3136311467c7ac6329a No Types Assigned https://github.com/wagtail/wagtail/commit/d4022310cbe497993459c3136311467c7ac6329a Release Notes Changed Reference Type https://github.com/wagtail/wagtail/releases/tag/v4.1.4 No Types Assigned https://github.com/wagtail/wagtail/releases/tag/v4.1.4 Release Notes Changed Reference Type https://github.com/wagtail/wagtail/releases/tag/v4.2.2 No Types Assigned https://github.com/wagtail/wagtail/releases/tag/v4.2.2 Release Notes Changed Reference Type https://github.com/wagtail/wagtail/security/advisories/GHSA-33pv-vcgh-jfg9 No Types Assigned https://github.com/wagtail/wagtail/security/advisories/GHSA-33pv-vcgh-jfg9 Mitigation, Vendor Advisory Added CPE Configuration OR *cpe:2.3:a:torchbox:wagtail:*:*:*:*:*:*:*:* versions up to (excluding) 4.1.4 *cpe:2.3:a:torchbox:wagtail:*:*:*:*:*:*:*:* versions from (including) 4.2 up to (excluding) 4.2.2
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-28837 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-28837
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.23 }} 0.01%
score
0.61587
percentile