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Security Advisories: GSA_kwCzR0hTQS1oajN3LXdyaDQtNDR2cM4ABBnB

LLama Factory Remote OS Command Injection Vulnerability

Summary

A critical remote OS command injection vulnerability has been identified in the Llama Factory training process. This vulnerability arises from improper handling of user input, allowing malicious actors to execute arbitrary OS commands on the host system. The issue is caused by insecure usage of the Popen function with shell=True, coupled with unsanitized user input. Immediate remediation is required to mitigate the risk.

Affected Version

Llama Factory versions <=0.9.0 are affected by this vulnerability.

Impact

Exploitation of this vulnerability allows attackers to:

  1. Execute arbitrary OS commands on the server.
  2. Potentially compromise sensitive data or escalate privileges.
  3. Deploy malware or create persistent backdoors in the system.

This significantly increases the risk of data breaches and operational disruption.

Root Cause

The vulnerability originates from the training process where the output_dir value, obtained from the user input, is injected into the popen function without any sanitization. Furthermore, popen is invoked in a unsafe way by enabling the interact shell (shell=True), leading to remote OS command injection vulnerability.

Vulnerable snippet:

# https://github.com/hiyouga/LLaMA-Factory/blob/bd639a137e6f46e1a0005cc91572f5f1ec894f74/src/llamafactory/webui/runner.py#L304-L323
def _launch(self, data: Dict["Component", Any], do_train: bool) -> Generator[Dict["Component", Any], None, None]:
				...
        args = self._parse_train_args(data) if do_train else self._parse_eval_args(data)
				...
        self.trainer = Popen(f"llamafactory-cli train {save_cmd(args)}", env=env, shell=True)
        yield from self.monitor()

Proof of Concept (PoC)

Steps to Reproduce

llama-factory-rce

Bad actors are able to execute any OS command as they want.

Remediation Recommendations

Avoid using shell=True in Popen.

cmd = [
    "llamafactory-cli",
    "train", 
  	*save_cmd(args).split(),
]
self.trainer = Popen(cmd, env=env)
Permalink: https://github.com/advisories/GHSA-hj3w-wrh4-44vp
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1oajN3LXdyaDQtNDR2cM4ABBnB
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: 19 days ago
Updated: 19 days ago


CVSS Score: 7.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Percentage: 0.00045
EPSS Percentile: 0.17556

Identifiers: GHSA-hj3w-wrh4-44vp, CVE-2024-52803
References: Repository: https://github.com/hiyouga/LLaMA-Factory
Blast Radius: 1.0

Affected Packages

pypi:llamafactory
Dependent packages: 0
Dependent repositories: 0
Downloads: 2,207 last month
Affected Version Ranges: <= 0.9.0
Fixed in: 0.9.1
All affected versions: 0.7.1, 0.8.0, 0.8.1, 0.8.2, 0.8.3, 0.9.0
All unaffected versions: 0.9.1