CVE-2023-40033

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.
Configurations

Configuration 1 (hide)

cpe:2.3:a:flarum:flarum:*:*:*:*:*:*:*:*

History

21 Nov 2024, 08:18

Type Values Removed Values Added
References () https://github.com/flarum/framework/commit/d1059c1cc79fe61f9538f3da55e8f42abbede570 - Patch () https://github.com/flarum/framework/commit/d1059c1cc79fe61f9538f3da55e8f42abbede570 - Patch
References () https://github.com/flarum/framework/security/advisories/GHSA-67c6-q4j4-hccg - Vendor Advisory () https://github.com/flarum/framework/security/advisories/GHSA-67c6-q4j4-hccg - Vendor Advisory

25 Aug 2023, 18:10

Type Values Removed Values Added
CPE cpe:2.3:a:flarum:flarum:*:*:*:*:*:*:*:*
First Time Flarum flarum
Flarum
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 7.1
References (MISC) https://github.com/flarum/framework/commit/d1059c1cc79fe61f9538f3da55e8f42abbede570 - (MISC) https://github.com/flarum/framework/commit/d1059c1cc79fe61f9538f3da55e8f42abbede570 - Patch
References (MISC) https://github.com/flarum/framework/security/advisories/GHSA-67c6-q4j4-hccg - (MISC) https://github.com/flarum/framework/security/advisories/GHSA-67c6-q4j4-hccg - Vendor Advisory

16 Aug 2023, 21:15

Type Values Removed Values Added
New CVE

Information

Published : 2023-08-16 21:15

Updated : 2024-11-21 08:18


NVD link : CVE-2023-40033

Mitre link : CVE-2023-40033

CVE.ORG link : CVE-2023-40033


JSON object : View

Products Affected

flarum

  • flarum
CWE
CWE-918

Server-Side Request Forgery (SSRF)