QID 994868

Date Published: 2023-08-17

QID 994868: PHP (Composer) Security Update for flarum/core (GHSA-67c6-q4j4-hccg)

The Flarum forum software is affected by a vulnerability that allows an attacker to conduct a Blind 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.

Successful exploitation of this vulnerability could lead to a security breach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as High - 7.1 severity.
  • CVSS V2 rated as Medium - 5.4 severity.
    • Solution
    Refer to Github security advisory GHSA-67c6-q4j4-hccg for updates and patch information.
    Vendor References

    CVEs related to QID 994868

    CVE-2023-40033 |
    Software Advisories
    Advisory ID Software Component Link
    GHSA-67c6-q4j4-hccg flarum/core URL Logo github.com/advisories/GHSA-67c6-q4j4-hccg
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