How to use a Win32 build of BusyBox to run many of the standard UNIX command line tools on Windows.
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Critical
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tessl review fix ./skills/busybox-on-windows/SKILL.mdSecurity
1 critical severity finding. Installing this skill is not recommended: please review these findings carefully if you do intend to do so.
Detected a suspicious URL in the skill instructions that could lead the agent to download and execute malicious scripts or binaries. This includes links to executables from untrusted sources, typosquatting of official packages, URL shorteners that obscure the destination, and personal file hosting services.
These URLs include direct .exe downloads from a third‑party site (frippery.org) with explicit instructions to fetch and run binaries—while busybox.net is the official project, third‑party Windows builds are unverified and therefore present a high risk of malware distribution.
Low
Low-risk findings.
1 low severity finding. Worth noting, but not necessarily harmful.
The skill fetches instructions or code from an external URL at runtime, and the fetched content directly controls the agent’s prompts or executes code. This dynamic dependency allows the external source to modify the agent’s behavior without any changes to the skill itself.
The skill includes PowerShell runtime commands that download and install an executable from https://frippery.org/files/busybox/busybox.exe (and its variants like busybox64.exe), meaning remote code is fetched at runtime and used as a required dependency.
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