T05 · Unauthorized Access and Privilege Escalation
Warning
- Location
scripts/doc-spellcheck.sh:89- Finding
Automatic Privileged Package Installation Without Explicit Consent
- Content
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/dev/null; then echo -e "${YELLOW}Warning: aspell not found. Installing...${NC}" if command -v brew &> /dev/null; then brew install aspell elif command -v apt-get &> /dev/null; then sudo apt-get install aspell else echo -e "${RED}Error: Cannot install aspell automatically. Please install it manually.${NC}" exit 1 fi fi ``` ### Technical Analysis The script automatically invokes a system package manager when `aspell` is unavailable. On systems using APT, it executes `sudo apt-get install aspell`, which requests elevated privileges and attempts to modify the system-wide software environment. Dependency validation is appropriate, but automatically crossing a privilege boundary is unnecessary for the spell-checking operation itself. The user is not given an explicit confirmation prompt or an opt-in installation flag. The documentation identifies Aspell as a dependency but does not clearly disclose that invoking the script may trigger a privileged installation. This behavior does not bypass operating-system authentication: `sudo` may still require authorization, and the package comes from configured system repositories. Nevertheless, the script initiates a privileged, persistent system modification beyond its core document-processing responsibility. ### Attack Path 1. A user or automation environment invokes `scripts/doc-spellcheck.sh` to inspect documentation. 2. The environment does not have `aspell` installed. 3. The script detects `apt-get` and automatically runs `sudo apt-get install aspell`. 4. If the user authorizes the request or the environment has passwordless `sudo`, the package manager modifies the system-wide package state. 5. ...[truncated 874 chars]- Remediation
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/dev/null 2>&1; then echo "Error: aspell is required but is not installed." >&2 echo "Install it using your trusted system package manager and retry." >&2 exit 1 fi ``` ]]>