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fix(guardrails): block-root-delete-target skips a PowerShell target holding a literal dollar sign

Cerrado
  • ¿Algo no está bien?
#6,626 1 comentario 0 reacciones 0 asignados Ver en GitHub

Los mantenedores suelen responder en 1 día

Ya se ha fusionado un pull request relacionado.

  • #7071 de @kyle-sexton — fusionado

Evaluación

Dificultad
4/5
Tiempo estimado
3-5 días
Aptitud para principiantes
48/100
Tipo de issue
Error
Claridad
Bastante claro
Estado de actividad
Activo
Stack tecnológico
powershell, shell
Área
cli, security

Línea de trabajo

Start by tracing the block-root-delete-target hook and its rdt_place_to operand handling for PowerShell single-quoted words; inspect the related work in #6020 and #6542. Reproduce the reported cases, including the cmd /c rd invocation from Bash, and determine whether that lane is wired or a declared gap. Done means literal $ operands and ::$ stream suffixes are judged safely, and the cmd case is judged or documented as a gap.

Escrito por el modelo de indexación a partir del texto del issue.

Descripción

needs-human needs-triage

Problem

block-root-delete-target leaves a PowerShell target alone when it holds a $, even inside single quotes, where PowerShell expands nothing. rdt_place_to returns "leave alone" for any $ in an operand that is not literal, and a PowerShell single-quoted word goes down that path.

On Win32, <dir>::$INDEX_ALLOCATION names the directory itself, so a spelling like the one below may reach a directory the guard would otherwise refuse.

Repro (hook side confirmed; PowerShell runtime side not verified)

With the key unset and cwd /:

  • Remove-Item -Recurse -Force 'D:\some\outside\dir' exits 2 (refused).
  • Remove-Item -Recurse -Force 'D:\some\outside\dir::$INDEX_ALLOCATION' exits 0 (allowed).

Also seen in the same review: cmd /c rd /s /q <dir> issued from the Bash tool exits 0 even for a directory outside the allowed roots. Check whether this is a declared gap or a lane that is simply not wired.

Acceptance

  • A single-quoted PowerShell operand is judged literally: a $ in it does not skip judgment.
  • A ::$INDEX_ALLOCATION (or other ::$ stream) suffix is judged as the directory before it, or refused.
  • The cmd /c rd from Bash case is either judged or listed as a declared gap.

Related: #6020. Found by the security review of #6542.

Lenguaje dominante
Shell
Estrellas
22
Forks
2
Merge medio
7 h 8 min
PR fusionados (30 d)
874

Preparar el entorno

Primeros pasos

  1. Lee el issue completo y luego la guía de contribución del proyecto.
  2. Comenta en el issue que vas a ocuparte — evita que dos personas hagan lo mismo.
  3. Haz un fork del repositorio y trabaja en una rama.
  4. Abre un pull request que haga referencia al número del issue.

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