T03 · Remote Payload Retrieval and Execution
Error
- Location
- SKILL.md:158
- Finding
- Unpinned Remote Script Piped Directly into Bash<![CDATA[ ## Vulnerability Details **File Location**: `SKILL.md:158` **Vulnerability Type**: `T03: Remote Payload Retrieval and Execution` **Risk Level**: Critical ### Vulnerable Code ```bash curl https://get.ignite.com/cli! | bash ``` ### Technical Analysis The installation instruction retrieves mutable content from an external URL and immediately passes it to Bash. The response is not pinned to a specific version, saved for inspection, or authenticated using a cryptographic signature or expected checksum. The effective code executed by this command can therefore change after the Skill has been reviewed. Compromise of the endpoint, hosting infrastructure, DNS resolution, or release pipeline could cause arbitrary attacker-controlled shell commands to run locally. Installing Ignite is relevant only to the optional local-devnet functionality. Immediate execution of an unauthenticated network response exceeds the minimum privileges and trust required to provide that optional capability. ### Attack Path 1. An attacker compromises the remote installation endpoint or its software-delivery infrastructure. 2. The attacker changes the response to include malicious shell commands. 3. A user or agent follows the Skill and runs the documented command. 4. `curl` downloads the modified response. 5. Bash executes the response immediately, without an opportunity for inspection or integrity verification. 6. The payload operates with all privileges available to the invoking account and may retrieve additional payloads, modify user files, or establish persistence. ### Impact Assessment Successful exploitation provides arbitrary command execution under the invoking user's identity. The payload could read or alter accessible files, steal credentials available to that account, modify shell configuration, install additional programs, or attempt further privilege escalation. If the instruction is run from an already privileged shell, the impact extends to system-wide compromi ...[truncated 7 chars]
- Remediation
- <![CDATA[ ## Remediation Suggestions 1. Remove the `curl | bash` pipeline. 2. Select and pin a specific official Ignite release. 3. Download the release artifact to a local file without executing it. 4. Verify a publisher-provided cryptographic signature or a hard-coded SHA-256 checksum obtained through an independently authenticated channel. 5. Inspect or extract the verified artifact before installation. 6. Install it into a user-local directory unless system-wide installation is explicitly required. 7. Document the exact downloaded version, expected digest, verification command, and resulting installation path. 8. Keep Ignite installation clearly optional because the primary `structsd` installation and client functionality do not require it. ]]>