edoardottt/openhands-disclosurePlusieurs vulnérabilités d'injection de commandes dans openhands <0.62.0 permettent à un attaquant d'exécuter des commandes système arbitraires.
Plusieurs vulnérabilités d'injection de commandes dans openhands <0.62.0 permettent à un attaquant d'exécuter des commandes système arbitraires.
La vulnérabilité est causée par l'utilisation de subprocess.run avec le shell activé sans aucune protection d'échappement (par exemple shlex, réf : https://semgrep.dev/docs/cheat-sheets/python-command-injection)
La vulnérabilité est présente dans le fichier openhands/resolver/send_pull_request.py et plus précisément dans les fonctions :
initialize_repo : ici la charge utile peut être insérée dans la valeur d'entrée base_commitdef initialize_repo(
output_dir: str, issue_number: int, issue_type: str, base_commit: str | None = None
) -> str:
"""Initialize the repository.
Args:
output_dir: The output directory to write the repository to
issue_number: The issue number to fix
issue_type: The type of the issue
base_commit: The base commit to checkout (if issue_type is pr)
"""
src_dir = os.path.join(output_dir, 'repo')
dest_dir = os.path.join(output_dir, 'patches', f'{issue_type}_{issue_number}')
if not os.path.exists(src_dir):
raise ValueError(f'Source directory {src_dir} does not exist.')
if os.path.exists(dest_dir):
shutil.rmtree(dest_dir)
shutil.copytree(src_dir, dest_dir)
logger.info(f'Copied repository to {dest_dir}')
# Checkout the base commit if provided
if base_commit:
result = subprocess.run(
f'git -C {dest_dir} checkout {base_commit}',
shell=True,
capture_output=True,
text=True,
)
if result.returncode != 0:
logger.info(f'Error checking out commit: {result.stderr}')
raise RuntimeError('Failed to check out commit')
return dest_dir
make_commit : ici, la charge utile peut être insérée dans les valeurs d'entrée repo_dir, issue_type, git_user_name, git_user_emaildef make_commit(
repo_dir: str,
issue: Issue,
issue_type: str,
git_user_name: str = 'openhands',
git_user_email: str = '[email protected]',
) -> None:
"""Make a commit with the changes to the repository.
Args:
repo_dir: The directory containing the repository
issue: The issue to fix
issue_type: The type of the issue
git_user_name: Git username for commits
git_user_email: Git email for commits
"""
# Check if git username is set
result = subprocess.run(
f'git -C {repo_dir} config user.name',
shell=True,
capture_output=True,
text=True,
)
if not result.stdout.strip():
# If username is not set, configure git with the provided credentials
subprocess.run(
f'git -C {repo_dir} config user.name "{git_user_name}" && '
f'git -C {repo_dir} config user.email "{git_user_email}" && '
f'git -C {repo_dir} config alias.git "git --no-pager"',
shell=True,
check=True,
)
logger.info(f'Git user configured as {git_user_name} <{git_user_email}>')
# Add all changes to the git index
result = subprocess.run(
f'git -C {repo_dir} add .', shell=True, capture_output=True, text=True
)
if result.returncode != 0:
logger.error(f'Error adding files: {result.stderr}')
raise RuntimeError('Failed to add files to git')
# Check the status of the git index
status_result = subprocess.run(
f'git -C {repo_dir} status --porcelain',
shell=True,
capture_output=True,
text=True,
)
# If there are no changes, raise an error
if not status_result.stdout.strip():
logger.error(
f'No changes to commit for issue #{issue.number}. Skipping commit.'
)
raise RuntimeError('ERROR: Openhands failed to make code changes.')
# Prepare the commit message
commit_message = f'Fix {issue_type} #{issue.number}: {issue.title}'
# Commit the changes
result = subprocess.run(
['git', '-C', repo_dir, 'commit', '-m', commit_message],
capture_output=True,
text=True,
)
if result.returncode != 0:
raise RuntimeError(f'Failed to commit changes: {result}')
update_existing_pull_request : ici, la charge utile peut être insérée dans la valeur d'entrée patch_dirdef update_existing_pull_request(
issue: Issue,
token: str,
username: str | None,
platform: ProviderType,
patch_dir: str,
llm_config: LLMConfig,
comment_message: str | None = None,
additional_message: str | None = None,
base_domain: str | None = None,
) -> str:
"""Update an existing pull request with the new patches.
Args:
issue: The issue to update.
token: The token to use for authentication.
username: The username to use for authentication.
platform: The platform of the repository.
patch_dir: The directory containing the patches to apply.
llm_config: The LLM configuration to use for summarizing changes.
comment_message: The main message to post as a comment on the PR.
additional_message: The additional messages to post as a comment on the PR in json list format.
base_domain: The base domain for the git server (defaults to "github.com" for GitHub, "gitlab.com" for GitLab, and "dev.azure.com" for Azure DevOps)
"""
# Set up headers and base URL for GitHub or GitLab API
# Determine default base_domain based on platform
if base_domain is None:
base_domain = (
'github.com'
if platform == ProviderType.GITHUB
else 'gitlab.com'
if platform == ProviderType.GITLAB
else 'dev.azure.com'
)
handler = None
if platform == ProviderType.GITHUB:
handler = ServiceContextIssue(
GithubIssueHandler(issue.owner, issue.repo, token, username, base_domain),
llm_config,
)
elif platform == ProviderType.AZURE_DEVOPS:
# For Azure DevOps, owner is "organization/project"
organization, project = issue.owner.split('/')
handler = ServiceContextIssue(
AzureDevOpsIssueHandler(token, organization, project, issue.repo),
llm_config,
)
else: # platform == ProviderType.GITLAB
handler = ServiceContextIssue(
GitlabIssueHandler(issue.owner, issue.repo, token, username, base_domain),
llm_config,
)
branch_name = issue.head_branch
# Prepare the push command
push_command = (
f'git -C {patch_dir} push '
f'{handler.get_authorize_url()}'
f'{issue.owner}/{issue.repo}.git {branch_name}'
)
# Push the changes to the existing branch
result = subprocess.run(push_command, shell=True, capture_output=True, text=True)
if result.returncode != 0:
logger.error(f'Error pushing changes: {result.stderr}')
raise RuntimeError('Failed to push changes to the remote repository')
# ...
Je fournis ici une preuve de concept simple en CLI, mais chaque invocation des fonctions mentionnées ci-dessus est vulnérable.
Voici la charge utile utilisée pour la fonction make_commit() : \"; id #.
Comme l'un des nombreux exemples, cette charge utile peut être définie via l'interface web locale d'openhands.