T08 · Insecure Dependencies
- Location
SKILL.md:76- Finding
Unpinned Third-Party Package Installation
- Content
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Vulnerability Details
File Location:
SKILL.md, lines 76–82
Vulnerability Type: Unpinned third-party dependency installation
Risk Level: MediumVulnerable Code Snippet:
markdown kuva reads TSV/CSV from stdin or a file path. Install once: `cargo install kuva --features cli`. No project source changes required. See [kuva](https://github.com/Psy-Fer/kuva) for the full plot-type reference.Technical Analysis
The skill recommends installing
kuvafrom the Cargo package registry without specifying an exact reviewed version or requiring dependency-lock enforcement. The command therefore resolves a mutable package release and its transitive dependency graph at installation time.Cargo package installation may compile and execute package build scripts or proc-macro dependencies. Consequently, the effective code trusted by a user can differ from the code available when this skill was audited. A compromised upstream crate, malicious newly published release, or compromised transitive dependency could introduce attacker-controlled code into the installation process.
This is a supply-chain weakness. The audit did not establish that the current
kuvapackage is malicious; the vulnerability is that the documented installation procedure does not constrain or verify the code that users will receive.Attack Path
- An attacker compromises the
kuvacrate, its publishing account, or a transitive dependency, and publishes a malicious release. - A user or agent follows the instruction in
SKILL.mdand runs:bash cargo install kuva --features cli - Cargo selects the current package version and resolves dependencies without an exact reviewed version requirement.
- Cargo downloads and compiles the attacker-controlled package or dependency.
- Malicious build-time or runtime code executes with the privileges of the user performing the installation.
Impact Ass
...[truncated 659 chars]
- An attacker compromises the
- Remediation
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Remediation Suggestions
- Pin
kuvato an exact version that has been reviewed:bash cargo install kuva --version '<exact-reviewed-version>' --locked --features cli - Retain
--lockedso Cargo uses the package's published lockfile where supported, reducing unexpected transitive dependency changes. - Document the expected registry, upstream repository, reviewed version, and package checksum or other integrity-verification information.
- Make installation explicitly optional and require user confirmation before downloading or executing third-party package code.
- Periodically review the pinned package and its transitive dependencies before updating the documented version.
- Prefer running the tool in a constrained environment with access limited to the chart input and intended output directory.
- Pin
