T08 · Insecure Dependencies
Note
- Location
- SKILL.md:51
- Finding
- Unpinned Third-Party Dependency Installation## Vulnerability Details **File Location**: `SKILL.md:51-54`; also declared without a version constraint in `skill.json:27-29` **Vulnerability Type**: T08: Insecure Dependencies **Risk Level**: Low ### Vulnerable Code `SKILL.md:51-54`: ```bash pip install openpyxl ``` `skill.json:27-29`: ```json "requirements": [ "python>=3.7", "openpyxl" ] ``` ### Technical Analysis The project instructs users to install `openpyxl` without pinning a reviewed version or verifying an artifact hash. The package declaration in `skill.json` is similarly unconstrained. Consequently, installations are not reproducible and will resolve whichever compatible release the configured package index serves at installation time. A future compromised, malicious, or unexpectedly incompatible release could therefore enter the execution environment without a corresponding change to the audited project. No evidence was found that the skill uses a typosquatted package, an untrusted package index, or automatic remote payload execution. The issue is limited to insufficient dependency integrity controls. ### Attack Path 1. An operator follows the documented `pip install openpyxl` instruction or an integration processes the unconstrained requirement. 2. `pip` queries the environment's configured package index and selects the latest matching release. 3. An attacker must first compromise the package distribution channel, a package release, index configuration, or another relevant supply-chain component. 4. The installer downloads and installs the substituted or compromised artifact without validating it against a project-maintained hash. 5. Malicious package installation logic or imported package code can execute with the permissions of the Python environment or process. ### Impact Assessment Successful exploitation requires an upstream or package-index compromise and is not directly achievable through an Excel input file. If that p ...[truncated 369 chars]
- Remediation
- ## Remediation Suggestions - Pin `openpyxl` to a reviewed exact version in both the documentation and machine-readable requirements, for example `openpyxl==X.Y.Z`. - Maintain a lock file or hash-locked requirements file generated from reviewed artifacts. - Install with hash verification, such as `pip install --require-hashes -r requirements.txt`. - Obtain packages only from a trusted, explicitly configured index or internal mirror. - Review and update pinned dependencies through a controlled process that includes vulnerability and provenance checks. - Run dependency installation and workbook processing as an unprivileged account inside an isolated virtual environment or container. - Keep the version declaration in `skill.json` synchronized with the locked dependency specification.