T08 · Insecure Dependencies
Warning
- Location
- SKILL.md:7
- Finding
- Unpinned Third-Party Python Dependencies<![CDATA[ ## Vulnerability Details **File Location**: `SKILL.md`, line 7 **Vulnerability Type**: `T08: Insecure Dependencies` **Risk Level**: Medium ### Vulnerable Code ```yaml dependencies: "pip install pillow cairosvg" ``` ### Technical Analysis The skill directs users or agents to install Pillow and CairoSVG without pinning reviewed versions or verifying package integrity with cryptographic hashes. Consequently, pip resolves mutable package releases and their transitive dependencies at installation time. The installed code may differ from the versions originally reviewed. If a package release or transitive dependency is compromised, malicious installation hooks or imported package code could execute with the privileges of the user running pip. CairoSVG is also declared but not imported or used by the provided implementation, unnecessarily increasing supply-chain exposure. No evidence indicates that the named packages or their current releases are malicious. The vulnerability is the unsafe and non-reproducible dependency installation practice. ### Attack Path 1. A user or agent activates the skill and follows its dependency installation instruction. 2. The command invokes pip without version constraints or integrity hashes. 3. Pip resolves the latest available releases and their transitive dependencies from the configured package index. 4. An attacker compromises a future package release, a transitive dependency, or the configured package source. 5. Pip downloads and installs the compromised component. 6. Malicious installation or runtime code executes under the account performing the installation. This exploitation path requires prior compromise or manipulation of a resolved dependency or package source. ### Impact Assessment Successful exploitation could execute arbitrary code with the privileges of the user or service account running pip or importing the dependency. Depending on those privileges, the attacker could access or alter local files, st ...[truncated 249 chars]
- Remediation
- <![CDATA[ ## Remediation Suggestions 1. Pin every direct dependency to a reviewed, exact version, for example: ```text Pillow==<reviewed-version> CairoSVG==<reviewed-version> ``` 2. Generate a lock file that also fixes all transitive dependency versions. 3. Require cryptographic hashes during installation, such as through a hash-locked requirements file and `pip install --require-hashes`. 4. Install packages only from an explicitly trusted package index and avoid unreviewed extra indexes. 5. Review dependency releases and run vulnerability scanning before updating the lock file. 6. Remove CairoSVG unless SVG conversion is properly implemented and required, thereby reducing the dependency attack surface. 7. Perform installation and image conversion in a least-privileged virtual environment or isolated container. ]]>