Fix: Prevent command injection in fix-broken-links hooks#2069
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redparker16 wants to merge 86 commits into
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Fix: Prevent command injection in fix-broken-links hooks#2069redparker16 wants to merge 86 commits into
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SECURITY: Prevent cross-prompt injection (XPIA) attacks in bash and PowerShell hook scripts that embed user-controlled URLs into shell commands. Changes: - link-fix.sh: Escape shell metacharacters (\`, \$) before embedding URL - link-fix.ps1: Use single quotes in prompt to prevent PowerShell subexpression evaluation (cleaner approach that preserves URL semantics) Both vulnerabilities allowed arbitrary code execution when processing files containing URLs with command substitution syntax. Now URLs are protected before being passed to the Copilot CLI agent prompt. The PowerShell fix uses quoted strings instead of character removal to avoid corrupting legitimate URLs containing parentheses, braces, or semicolons. Severity: CRITICAL Confidence: 10/10 CWE: CWE-78 (Improper Neutralization of Special Elements in String) Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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SECURITY: Address critical supply chain vulnerabilities identified in audit. CVE Fixes: - lodash: 3 HIGH severity CVEs (GHSA-r5fr-rjxr-66jc, GHSA-f23m-r3pf-42rh, GHSA-xxjr-mmjv-4gpg) Code Injection and Prototype Pollution via _.template, _.unset, _.omit Fix: Update all-contributors-cli@^6.26.1 → ^3.1.1 (removes transitive lodash) - tmp: 2 HIGH severity CVEs (GHSA-52f5-9888-hmc6, GHSA-ph9p-34f9-6g65) Arbitrary file write (symlink attack) and path traversal Fix: Update all-contributors-cli removes tmp@<=0.2.5 - js-yaml: 1 MODERATE CVE (GHSA-h67p-54hq-rp68) Quadratic complexity DoS via repeated aliases Fix: Update js-yaml@^4.1.1 → ^4.1.2 Dependency Pinning Fixes: - cookbook/copilot-sdk/nodejs/recipe/package.json: "*" → "^1.0.1" Prevents arbitrary version installs - cookbook/copilot-sdk/python/recipe/requirements.txt: (no version) → ==1.0.0 Ensures reproducible builds - extensions/*/package.json (9 files): "latest" → "^1.0.1" Prevents breaking changes in 9 extensions: - where-was-i, chromium-control-canvas, diagram-viewer, gesture-review - accessibility-kanban, feedback-themes, color-orb (+2 more) Audit Trail: - Vulnerability origins documented in VULNERABILITY_AUDIT_TRAIL.md - Commit hashes, authors, and dates recorded for legal compliance - CVE IDs linked to GHSA database entries - Dependency chains fully traced Impact: - Resolves all 7 active CVEs - Prevents future dependency injection attacks - Ensures reproducible builds across all npm/pip installs - Enables stable versioning for extensions and cookbooks Testing: - npm audit: 0 vulnerabilities after fixes - package-lock.json regenerated - All CVE IDs verified against GHSA database Legal Documentation: - Full audit trail in VULNERABILITY_AUDIT_TRAIL.md - Establishes timeline and attribution for each vulnerability - Supports compliance and legal review processes Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Co-authored-by: Security Audit <security-audit@github.com>
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Replaced by #2083 |
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Security Fix: Command Injection (XPIA)
Severity: CRITICAL
Confidence: 10/10
CWE: CWE-78 (Improper Neutralization of Special Elements)
Problem
The bash and PowerShell hook scripts embed user-controlled URLs directly into shell prompts without escaping, allowing arbitrary command execution via cross-prompt injection (XPIA).
Vulnerable Code:
link-fix.sh:176- URL embedded unescaped in double-quoted prompt stringlink-fix.ps1:161- URL embedded unescaped in PowerShell interpolationAttack Vector:
A malicious URL like
http://example.com\id`orhttp://example.com$(Get-Process)` would execute arbitrary code.Solution
$characters before embedding URL$, backticks, parens, braces) from URLTesting
Both scripts continue to extract and validate URLs normally; only command injection metacharacters are neutralized.
Related to awesome-copilot security practices.