T08 · Insecure Dependencies
- Location
SKILL.md:4- Finding
Unpinned Third-Party CLI Installed from a Custom Homebrew Tap
- Content
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Vulnerability Details
File Location:
SKILL.md, lines 4 and 12-13
Vulnerability Type: Supply-chain exposure through an unpinned third-party dependency
Risk Level: MediumVulnerable Code
text homepage: https://github.com/antoniorodr/memo metadata: {"clawdbot":{"emoji":"📝","os":["darwin"],"requires":{"bins":["memo"]},"install":[{"id":"brew","kind":"brew","formula":"antoniorodr/memo/memo","bins":["memo"],"label":"Install memo via Homebrew"}]}} --- # Apple Notes CLI Use `memo notes` to manage Apple Notes directly from the terminal. Create, view, edit, delete, search, move notes between folders, and export to HTML/Markdown. Setup - Install (Homebrew): `brew tap antoniorodr/memo && brew install antoniorodr/memo/memo` - Manual (pip): `pip install .` (after cloning the repo)Technical Analysis
The Skill instructs users or an Agent to install and execute the
memoCLI from the third-party custom Homebrew tapantoniorodr/memo. Neither the Homebrew installation path nor the manual pip alternative pins an immutable release, commit, package hash, or cryptographic signature.Consequently, the code installed at execution time may differ from the code that existed when the Skill was reviewed. The pip alternative also says to install after cloning “the repo” without specifying an exact repository URL, tag, or commit, increasing the chance of installing the wrong or a modified source tree.
This issue does not establish that the current upstream dependency is malicious. The risk arises because a compromised upstream repository, Homebrew tap, maintainer account, release process, or mutable package could distribute altered executable code. The exposure is particularly significant because the installed utility is intended to receive macOS Automation access to Apple Notes.
Attack Path
- An attacker compromises the upstream repository, custom Homebrew tap, maintainer credentials, or relea ...[truncated 1308 chars]
- Remediation
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Remediation Suggestions
- Pin
memoto a reviewed, immutable release version and, where possible, an exact source commit. - Verify downloaded artifacts using a trusted cryptographic checksum or signature before installation.
- Specify the complete official repository URL for manual installation and require checkout of an exact reviewed commit or signed tag before running
pip install. - Avoid installing directly from a mutable branch or relying on an unversioned custom tap formula.
- Document the expected package publisher, repository, release version, checksum, and verification procedure in
SKILL.md. - Review the dependency and its transitive dependencies before granting macOS Automation access.
- Grant Notes.app Automation permission only after package integrity has been verified, and revoke that permission when the integration is no longer needed.
- Consider distributing a reproducibly built and signed artifact through a trusted package channel.
- Pin
