T07 · Tool Hijacking and Spoofing
- Location
auto_llm_4891.py:6- Finding
Untrusted Module Search Path Enables Local Module Hijacking
- Content
View full analysis
Vulnerability Details
File Location:
auto_llm_4891.py, lines 6-9
Vulnerability Type: Untrusted Python module search path
Risk Level: Mediumpython import sys sys.path.insert(0, r"D:\\coze-local\\db") import randomTechnical Analysis
The script prepends an unrelated, hard-coded directory to
sys.pathbefore importingrandom. Position zero has the highest module-resolution priority. Consequently, Python may load a file such asrandom.pyfrom that directory instead of the intended standard-library module.Python executes a module's top-level code during import. An attacker who can write to the inserted directory could therefore place a spoofed module there and obtain code execution when this skill is imported or invoked. The path modification is not required by the documented or implemented chatbot functionality.
Exploitation depends on the path being usable in the runtime environment and the attacker having permission to write to it.
Attack Path
- The attacker obtains write access to the effective
D:\coze-local\dbdirectory. - The attacker creates a malicious
random.pyfile in that directory. - A user or agent starts or imports
auto_llm_4891.py. - The script inserts the attacker-influenced directory at the beginning of
sys.path. - The subsequent
import randomresolves to the attacker's file instead of the trusted standard-library module. - Python executes the malicious module's top-level code within the skill process.
Impact Assessment
Successful exploitation permits arbitrary Python code execution with the same operating-system identity, filesystem access, environment access, and network permissions as the process running the skill. Depending on those privileges, the attacker could access or alter process-readable data and perform any other action available to that account. This code does not itself elevate privileges; the impact is bounded by the privileg ...[truncated 87 chars]
- The attacker obtains write access to the effective
- Remediation
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Remediation Suggestions
Remove the unnecessary search-path modification:
python import randomIf project-specific modules are genuinely required:
- Package them as part of the project and use explicit package-relative imports.
- Install dependencies into a controlled virtual environment from pinned, verified sources.
- Never prepend shared, user-writable, temporary, or unrelated directories to
sys.path. - Ensure application and dependency directories are writable only by trusted administrators or deployment identities.
- Run the skill under a least-privileged account to limit the consequences of any future import-hijacking issue.
