T07 · Tool Hijacking and Spoofing
- Location
scripts/deploy_hummingbot_api.sh:152- Finding
Global replacement of the sudo command with an unauthenticated wrapper
- Content
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/dev/null; then echo -e '#!/bin/bash\nwhile [[ "$1" == *=* ]]; do export "$1"; shift; done\nexec "$@"' > /usr/local/bin/sudo chmod +x /usr/local/bin/sudo fi ``` ### Technical Analysis When installation runs as root in an environment without `sudo`, the script creates `/usr/local/bin/sudo`. This replacement does not implement real `sudo` authentication, authorization, environment filtering, user switching, or command-policy enforcement. It simply exports assignment-style arguments and executes the remaining command under the current process identity. Writing a spoofed executable into a globally trusted command path exceeds the privileges necessary to deploy Hummingbot. The modification is also not disclosed in the Skill documentation. ### Attack Path 1. Run `deploy_hummingbot_api.sh install` as root in a container or environment without an existing `sudo`. 2. The installer writes the wrapper to `/usr/local/bin/sudo`. 3. A later setup script, administrator, or application resolves `sudo` through `PATH`. 4. The wrapper executes the supplied command directly as root without normal `sudo` policy checks. 5. Attacker-controlled arguments passed through such a call receive root-level execution. ### Impact Assessment This can affect every process that resolves `/usr/local/bin/sudo` before the legitimate binary. It can bypass expected privilege boundaries, create incorrect security assumptions, and execute commands with root privileges. The replacement remains on the filesystem after the installer exits. ]]>- Remediation
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