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[程序员] Arc 浏览器的漏洞可使用户访问网站时被植入任意代码(已解决)

发表于

发现者解析: https://kibty.town/blog/arc/

官方: https://arc.net/blog/CVE-2024-45489-incident-response

HN: https://news.ycombinator.com/item?id=41597250

TL;DR

  • Arc 允许用户为特定网站自定义 JS/CSS
  • Arc 会将上述自定义内容同步到服务器
  • Arc 使用 Firebase 储存上述内容,但是错配了 Firebase 的 ACL ,使得用户可以将自定义 JS/CSS 的 CreatorID 改成任意其他人
  • 基于上一个漏洞,攻击者可以构造有问题的 JS 脚本,同步上传后更改其 CreatorID 为受害者的用户 ID ,从而将脚本同步到受害者电脑上,待受害者访问特定网站时便会执行

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