GHSA-jxj7-g6gm-49j7
tarteaucitron: data-cookie attribute can be used to delete arbitrary cookies
Quick fix
GHSA-jxj7-g6gm-49j7 — tarteaucitronjs: upgrade to the fixed version with the command below.
npm install tarteaucitronjs@1.33.0Details
### Summary
tarteaucitron provides a list of cookies and buttons to delete them. If an attacker can write HTML with data attributes, they could create an element that silently deletes a cookie when clicked and trick a user to delete this cookie.
### Details
`tarteaucitron.cookie.purge()` is called on any element with the `purgeBtn` class. It does not check if the element is a legitimate tarteaucitron button or if the cookie corresponds to a service handled by tarteaucitron.
### PoC
```html <a class="purgeBtn" data-cookie="foo">Click me!</a> ```
If someone has a cookie with this name and clicks on the link, the cookie is silently deleted.
### Impact
The impact is limited because this only works on cookies without HttpOnly=true and the attacker has to know the name of the cookie.
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