CVE-2023-40033
Flarum Blind Server-Side Request Forgery and Local File Disclosure Vulnerability
Description
Flarum is an open source forum software. Flarum is affected by a vulnerability that allows an attacker to conduct a Blind Server-Side Request Forgery (SSRF) attack or disclose any file on the server, even with a basic user account on any Flarum forum. By uploading a file containing a URL and spoofing the MIME type, an attacker can manipulate the application to execute unintended actions. The vulnerability is due to the behavior of the `intervention/image` package, which attempts to interpret the supplied file contents as a URL, which then fetches its contents. This allows an attacker to exploit the vulnerability to perform SSRF attacks, disclose local file contents, or conduct a blind oracle attack. This has been patched in Flarum version 1.8.0. Users are advised to upgrade. Users unable to upgrade may disable PHP's `allow_url_fopen` which will prevent the fetching of external files via URLs as a temporary workaround for the SSRF aspect of the vulnerability.
INFO
Published Date :
Aug. 16, 2023, 9:15 p.m.
Last Modified :
Aug. 25, 2023, 6:10 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.2
Exploitability Score :
2.8
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-2023-40033.
| URL | Resource |
|---|---|
| https://github.com/flarum/framework/commit/d1059c1cc79fe61f9538f3da55e8f42abbede570 | Patch |
| https://github.com/flarum/framework/security/advisories/GHSA-67c6-q4j4-hccg | Vendor Advisory |
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-40033 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-40033 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.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Aug. 25, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N Changed Reference Type https://github.com/flarum/framework/commit/d1059c1cc79fe61f9538f3da55e8f42abbede570 No Types Assigned https://github.com/flarum/framework/commit/d1059c1cc79fe61f9538f3da55e8f42abbede570 Patch Changed Reference Type https://github.com/flarum/framework/security/advisories/GHSA-67c6-q4j4-hccg No Types Assigned https://github.com/flarum/framework/security/advisories/GHSA-67c6-q4j4-hccg Vendor Advisory Added CPE Configuration OR *cpe:2.3:a:flarum:flarum:*:*:*:*:*:*:*:* versions up to (excluding) 1.8.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-40033 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-2023-40033
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.01%
score
0.28344
percentile