CVE-2023-28115
PHAR deserialization allowing remote code execution
描述
Snappy is a PHP library allowing thumbnail, snapshot or PDF generation from a url or a html page. Prior to version 1.4.2, Snappy is vulnerable to PHAR deserialization due to a lack of checking on the protocol before passing it into the `file_exists()` function. If an attacker can upload files of any type to the server he can pass in the phar:// protocol to unserialize the uploaded file and instantiate arbitrary PHP objects. This can lead to remote code execution especially when snappy is used with frameworks with documented POP chains like Laravel/Symfony vulnerable developer code. If a user can control the output file from the `generateFromHtml()` function, it will invoke deserialization. This vulnerability is capable of remote code execution if Snappy is used with frameworks or developer code with vulnerable POP chains. It has been fixed in version 1.4.2.
如何修補 CVE-2023-28115
要修補 CVE-2023-28115,請將受影響套件升級到下列已修補版本。
- —未列出修補版本
- —升級至 1.4.2 或更新版本
CVE-2023-28115 正在被利用嗎?
低 — EPSS 為 2.8%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0
- from 0, < 1.4.2
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |