CVE-2023-40033
HIGH7.1EPSS 0.19%Flarum vulnerable to LFI and Blind SSRF via Avatar upload
描述
## Impact 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. ### Patches This has been patched in Flarum **v1.8**. ## Workarounds As a temporary workaround for the SSRF aspect of the vulnerability, one can disable PHP's `allow_url_fopen` which will prevent the fetching of external files via URLs. ### Credits Adam Kues - [Assetnote](https://assetnote.io/)
受影響套件(2)
- Packagist/flarum/corefrom 0, < 1.8.0
- Packagist/flarum/frameworkfrom 0, < 1.8.0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N |