getkirby kirby 源验证错误

CVE编号

CVE-2020-26253

利用情况

暂无

补丁情况

N/A

披露时间

2020-12-08

漏洞描述

Kirby is a CMS. In Kirby CMS (getkirby/cms) before version 3.3.6, and Kirby Panel before version 2.5.14 there is a vulnerability in which the admin panel may be accessed if hosted on a .dev domain. In order to protect new installations on public servers that don't have an admin account for the Panel yet, we block account registration there by default. This is a security feature, which we implemented years ago in Kirby 2. It helps to avoid that you forget registering your first admin account on a public server. In this case – without our security block – someone else might theoretically be able to find your site, find out it's running on Kirby, find the Panel and then register the account first. It's an unlikely situation, but it's still a certain risk. To be able to register the first Panel account on a public server, you have to enforce the installer via a config setting. This helps to push all users to the best practice of registering your first Panel account on your local machine and upload it together with the rest of the site. This installation block implementation in Kirby versions before 3.3.6 still assumed that .dev domains are local domains, which is no longer true. In the meantime, those domains became publicly available. This means that our installation block is no longer working as expected if you use a .dev domain for your Kirby site. Additionally the local installation check may also fail if your site is behind a reverse proxy. You are only affected if you use a .dev domain or your site is behind a reverse proxy and you have not yet registered your first Panel account on the public server and someone finds your site and tries to login at `yourdomain.dev/panel` before you register your first account. You are not affected if you have already created one or multiple Panel accounts (no matter if on a .dev domain or behind a reverse proxy). The problem has been patched in Kirby 3.3.6. Please upgrade to this or a later version to fix the vulnerability.

解决建议

建议您更新当前系统或软件至最新版，完成漏洞的修复。

参考链接
https://github.com/getkirby-v2/panel/commit/7f9ac1876bacb89fd8f142f5e561a02ebb725baa
https://github.com/getkirby/kirby/releases/tag/3.3.6
https://github.com/getkirby/kirby/security/advisories/GHSA-2ccx-2gf3-8xvv
https://packagist.org/packages/getkirby/cms
https://packagist.org/packages/getkirby/panel

受影响软件情况

#	类型	厂商	产品	版本	影响面
1
	运行在以下环境
	应用	getkirby	kirby	*		Up to (excluding) 3.3.6
	运行在以下环境
	应用	getkirby	panel	*		Up to (excluding) 2.5.14

CVSS3评分 5.9

• 攻击路径 网络
• 攻击复杂度 高
• 权限要求 无
• 影响范围 未更改
• 用户交互 无
• 可用性 无
• 保密性 无
• 完整性 高

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N CWE-ID 漏洞类型 CWE-346 源验证错误