CVE-2021-43808

描述

Laravel is a web application framework. Laravel prior to versions 8.75.0, 7.30.6, and 6.20.42 contain a possible cross-site scripting (XSS) vulnerability in the Blade templating engine. A broken HTML element may be clicked and the user taken to another location in their browser due to XSS. This is due to the user being able to guess the parent placeholder SHA-1 hash by trying common names of sections. If the parent template contains an exploitable HTML structure an XSS vulnerability can be exposed. This vulnerability has been patched in versions 8.75.0, 7.30.6, and 6.20.42 by determining the parent placeholder at runtime and using a random hash that is unique to each request.

如何修補 CVE-2021-43808

要修補 CVE-2021-43808,請將受影響套件升級到下列已修補版本。

• —升級至 6.20.42 或更新版本
• —升級至 6.20.42 或更新版本

CVE-2021-43808 正在被利用嗎?

低 — EPSS 為 0.8%,目前沒有觀察到大規模利用活動。

受影響套件(2)

• from 0, < 6.20.42
• from 0, < 6.20.42

CVSS 分數

參考連結(12)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-43808
• PATCHgithub.com/laravel/framework
• WEBgithub.com/FriendsOfPHP/security-advisories/blob/master/illuminate/view/CVE-2021-43808.yaml
• WEBgithub.com/FriendsOfPHP/security-advisories/blob/master/laravel/framework/CVE-2021-43808.yaml