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A remote cache entry's input paths can point outside the workspace

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#768 0 条评论 0 个 reaction 已指派 0 人 在 GitHub 查看

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评估

难度
4/5
预计耗时
3-5 天
新手友好度
48/100
Issue 类型
缺陷
描述清晰度
基本清楚
活跃度
活跃
技术栈
rust
领域
security

调研方向

Start with the remote cache read path used by vp run, including the work described in #756, and trace how cached input paths are resolved and hashed. Determine how normally created entries behave outside the workspace; done means remote entries cannot cause reads outside it, including paths such as .. or endless files.

由索引模型根据 Issue 内容生成。

描述

remote cache

A cache entry lists the files the task read, as paths relative to the workspace, and vp run checks those files before it uses the entry. For entries from the remote cache, those paths aren't limited to the workspace: an entry can list paths that climb out of it with ...

A corrupted or malicious remote entry can therefore make vp run read and hash any file the user can read, anywhere on the machine, or hang while reading an endless file such as /dev/zero. When several people or CI jobs can write to the same remote cache, any one of them can affect everyone else's runs this way.

It isn't known yet whether normally created entries ever record inputs outside the workspace, which matters for deciding what to reject.

Expected: entries from the remote cache only make vp run read files inside the workspace.

Affects remote cache reads (#756).

主要语言
Rust
星标
468
派生
42
平均合并
2 天 31 分钟
30 天内合并 PR
46

环境准备

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从这里开始

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  3. Fork 仓库,在一个分支上完成修改。
  4. 提交 Pull Request,并在描述里引用这个 Issue 编号。

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