CVE-2024-56199
phpMyFAQ Vulnerable to Stored HTML Injection at FAQ
描述
### Summary Due to insufficient validation on the content of new FAQ posts, it is possible for authenticated users to inject malicious HTML or JavaScript code that can impact other users viewing the FAQ. This vulnerability arises when user-provided inputs in FAQ entries are not sanitized or escaped before being rendered on the page. ### Details An attacker can inject malicious HTML content into the FAQ editor at http://localhost/admin/index.php?action=editentry, resulting in a complete disruption of the FAQ page's user interface. By injecting malformed HTML elements styled to cover the entire screen, an attacker can render the page unusable. This injection manipulates the page structure by introducing overlapping buttons, images, and iframes, breaking the intended layout and functionality. ### PoC 1. In the source code of a FAQ Q&A post, insert the likes of this snippet: ``` <p><--`<img src="`"> --!></p> <div style="position: absolute; top: 0; left: 0; width: 100%; height: 100%;"><form><button>HTML INJECTION 1<img> <img> <img> <img> <iframe></iframe></button> <div style="xg-p: absolute; top: 0; left: 0; width: 100%; height: 100%;">x</div> <button>HTML INJECTION 2<iframe></iframe> <iframe></iframe> </button></form></div> ```  2. A normal user would see the broken FAQ page, or otherwise manipulated by the attacker to present a different malicious page:  A demo (fresh install overwrites every 24hours) here: https://roy.demo.phpmyfaq.de/content/1/24/en/24.html? ### Impact Exploiting this issue can lead to Denial of Service for legitimate users, damage to the user experience, and potential abuse in phishing or defacement attacks.
如何修補 CVE-2024-56199
目前尚未發布修補版本。可考慮移除受影響套件,或參考下方連結中的上游建議。
- —未列出修補版本
- —未列出修補版本
CVE-2024-56199 正在被利用嗎?
低 — EPSS 為 0.4%,目前沒有觀察到大規模利用活動。