CVE - CVE-2023-40033

CVE-ID
CVE-2023-40033	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://github.com/flarum/framework/commit/d1059c1cc79fe61f9538f3da55e8f42abbede570 URL:https://github.com/flarum/framework/commit/d1059c1cc79fe61f9538f3da55e8f42abbede570 MISC:https://github.com/flarum/framework/security/advisories/GHSA-67c6-q4j4-hccg URL:https://github.com/flarum/framework/security/advisories/GHSA-67c6-q4j4-hccg
Assigning CNA
GitHub (maintainer security advisories)
Date Record Created
20230808	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20230808)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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