GrowthBook account creation and file upload vulnerability in self-hosted configurations

GrowthBook is an open-source platform for feature flagging and A/B testing. With some self-hosted configurations in versions prior to 2022-08-29, attackers can register new accounts and upload files to arbitrary directories within the container. If the attacker uploads a Python script to the right location, they can execute arbitrary code within the container. To be affected, ALL of the following must be true: Self-hosted deployment (GrowthBook Cloud is unaffected); using local file uploads (as opposed to S3 or Google Cloud Storage); NODE_ENV set to a non-production value and JWT_SECRET set to an easily guessable string like `dev`. This issue is patched in commit 1a5edff8786d141161bf880c2fd9ccbe2850a264 (2022-08-29). As a workaround, set `JWT_SECRET` environment variable to a long random string. This will stop arbitrary file uploads, but the only way to stop attackers from registering accounts is by updating to the latest build.

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

路径遍历：’../filedir’

GrowthBook 路径遍历漏洞

GrowthBook是GrowthBook开源的一个开源功能标记和 A/B 测试平台。 GrowthBook 2022-08-29之前版本存在路径遍历漏洞，该漏洞源于一些自托管配置，攻击者利用该漏洞可以注册新帐户并将文件上传到容器内的任意目录。

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