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Security audit

Agent Logger

Security checks across malware telemetry and agentic risk

Overview

The skill appears to be a log-analysis/logging helper with only disclosed, local CI verification code flagged by scanners.

Before installing, read the README to confirm whether you want a logging setup helper, a log analyzer, or both. Treat any CI scripts as code that runs local tests when invoked, but the supplied evidence does not show hidden installation behavior or malicious activity.

SkillSpector

By NVIDIA
Vulnerability Patterns
  • Output HandlingUnvalidated Output Injection, Cross-Context Output, Unbounded Output
  • Behavioral ASTexec() Call, eval() Call, Dynamic Import
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
Findings (9)

subprocess module call

Medium
Category
Dangerous Code Execution
Content
def has_self_test(fp):
    r = subprocess.run([sys.executable, fp, "self-test"], capture_output=True, text=True, timeout=30)
    return r.returncode == 0 and "PASS" in r.stdout
Confidence
70% confidence
Finding
r = subprocess.run([sys.executable, fp, "self-test"], capture_output=True, text=True, timeout=30)

subprocess module call

Medium
Category
Dangerous Code Execution
Content
# 7 deploy-ready
    ci = os.path.join(os.path.dirname(os.path.abspath(__file__)), "ci_check.py")
    if os.path.isfile(ci) and os.path.isfile(skill):
        r = subprocess.run([sys.executable, ci], cwd=folder, capture_output=True, text=True)
        all_ok &= axis(r.returncode == 0, "deploy-ready (ci/ci_check.py PASS)")
    else:
        all_ok &= axis(True, "deploy-ready (skipped)")
Confidence
70% confidence
Finding
r = subprocess.run([sys.executable, ci], cwd=folder, capture_output=True, text=True)

subprocess module call

Medium
Category
Dangerous Code Execution
Content
all_ok &= axis(False, "frontmatter (no SKILL.md)")
        all_ok &= axis(False, "docs (no SKILL.md)")
    # 3 compiles
    comp_ok = all(subprocess.run([sys.executable, "-m", "py_compile", fp],
                                capture_output=True).returncode == 0 for fp in files)
    all_ok &= axis(comp_ok, "compiles (py_compile all .py)")
    # 4 self-test (any of 3 valid forms)
Confidence
70% confidence
Finding
comp_ok = all(subprocess.run([sys.executable, "-m", "py_compile", fp], capture_output=True).returncode == 0 for fp in files)

subprocess module call

Medium
Category
Dangerous Code Execution
Content
tests = [os.path.join(folder, f) for f in os.listdir(folder)
                 if (f.startswith("test_") or f.endswith("_test.py")) and f.endswith(".py")]
        if tests:
            st_ok = all(subprocess.run([sys.executable, t], capture_output=True, text=True,
                                      timeout=30).returncode == 0 for t in tests)
            st_note = f"{len(tests)} test_*.py"
        elif re.search(r"(?im)^test\s*:", skill_txt):
Confidence
70% confidence
Finding
st_ok = all(subprocess.run([sys.executable, t], capture_output=True, text=True, timeout=30).returncode == 0 for t in tests)

Intent-Code Divergence

Medium
Confidence
95% confidence
Finding
The front matter describes the skill as providing structured logging capabilities including JSON logs and rotation, which implies generating or managing logs. The main title and summary then describe it as an "Agent Run Log Analyzer" that analyzes existing logs for errors, spikes, and failures, which is a materially different purpose.

Unvalidated Output Injection

High
Category
Output Handling
Content
def has_self_test(fp):
    r = subprocess.run([sys.executable, fp, "self-test"], capture_output=True, text=True, timeout=30)
    return r.returncode == 0 and "PASS" in r.stdout
Confidence
95% confidence
Finding
subprocess.run([sys.executable, fp, "self-test"], capture_output

Unvalidated Output Injection

High
Category
Output Handling
Content
all_ok &= axis(False, "frontmatter (no SKILL.md)")
        all_ok &= axis(False, "docs (no SKILL.md)")
    # 3 compiles
    comp_ok = all(subprocess.run([sys.executable, "-m", "py_compile", fp],
                                capture_output=True).returncode == 0 for fp in files)
    all_ok &= axis(comp_ok, "compiles (py_compile all .py)")
    # 4 self-test (any of 3 valid forms)
Confidence
95% confidence
Finding
subprocess.run([sys.executable, "-m", "py_compile", fp], capture_output

Unvalidated Output Injection

High
Category
Output Handling
Content
tests = [os.path.join(folder, f) for f in os.listdir(folder)
                 if (f.startswith("test_") or f.endswith("_test.py")) and f.endswith(".py")]
        if tests:
            st_ok = all(subprocess.run([sys.executable, t], capture_output=True, text=True,
                                      timeout=30).returncode == 0 for t in tests)
            st_note = f"{len(tests)} test_*.py"
        elif re.search(r"(?im)^test\s*:", skill_txt):
Confidence
95% confidence
Finding
subprocess.run([sys.executable, t], capture_output

Unvalidated Output Injection

High
Category
Output Handling
Content
# 7 deploy-ready
    ci = os.path.join(os.path.dirname(os.path.abspath(__file__)), "ci_check.py")
    if os.path.isfile(ci) and os.path.isfile(skill):
        r = subprocess.run([sys.executable, ci], cwd=folder, capture_output=True, text=True)
        all_ok &= axis(r.returncode == 0, "deploy-ready (ci/ci_check.py PASS)")
    else:
        all_ok &= axis(True, "deploy-ready (skipped)")
Confidence
95% confidence
Finding
subprocess.run([sys.executable, ci], cwd=folder, capture_output

VirusTotal

61/61 vendors flagged this skill as clean.

View on VirusTotal

Static analysis

No suspicious patterns detected.