thanhnvandClaude Opus 4.8
8c06a55aed
- SEC-13 (M-09): SSRF allowlist on provider-usage-fetch (always block non-http(s) schemes; enforced mode blocks internal/link-local IPs + non-allowlisted hosts, dev keeps loopback mocks); dashboard refuses non-loopback bind in enforced mode. - SEC-27 (X-02): casan-log strips ESC/CSI + CR/LF (terminal-escape + fake-log-line injection) while keeping tab and visible text. - SEC-28 (X-04): new path-guard.sh — realpath resolve + reject symlink/.. escapes outside the allowed root. Verify: SEC-13 6/0, SEC-27 3/0, SEC-28 4/0, adversarial 44/44, run-casan4 0-FAIL. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
62 lines
2.8 KiB
Bash
62 lines
2.8 KiB
Bash
#!/usr/bin/env bash
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set -uo pipefail
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# CASAN Plan-16 SEC-13 (M-09) — SSRF allowlist on outbound fetch + dashboard bind.
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#
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# provider-usage-fetch curled an arbitrary URL (SSRF: internal/link-local/file://),
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# and the no-auth dashboard could bind 0.0.0.0. Proves:
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# * file:// (and other non-http schemes) are ALWAYS rejected,
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# * dev keeps loopback mocks working (http://127.0.0.1 → unreachable, not blocked),
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# * enforced mode blocks loopback, metadata IPs, and non-allowlisted hosts,
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# * the dashboard refuses a non-loopback bind in enforced mode.
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#
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# Deterministic; hermetic; no real network egress.
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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PROJECT_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
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S="$PROJECT_ROOT/.specify/scripts/bash"
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FETCH="$S/provider-usage-fetch.sh"
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WORK="$(mktemp -d)"
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trap 'rm -rf "$WORK"' EXIT
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OUT="$WORK/o.jsonl"
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PASS=0; FAIL=0
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pass() { echo "PASS: $1"; PASS=$((PASS + 1)); }
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fail() { echo "FAIL: $1"; FAIL=$((FAIL + 1)); }
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out_of() { set +e; "$@" 2>&1 >/dev/null; set -e 2>/dev/null || true; }
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echo "===== Plan-16 SEC-13: SSRF allowlist + dashboard bind ====="
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# 1) file:// always rejected (any mode).
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out_of bash "$FETCH" "file:///etc/passwd" "$OUT" | grep -q "PROVIDER_API_SSRF_BLOCKED\|scheme_not_allowed" \
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&& pass "file:// scheme rejected (all modes)" || fail "file:// not rejected"
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# 2) dev + loopback mock: NOT ssrf-blocked (reaches curl → unreachable).
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O="$(out_of bash "$FETCH" "http://127.0.0.1:59991/usage" "$OUT")"
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if echo "$O" | grep -q "PROVIDER_API_SSRF_BLOCKED"; then
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fail "dev loopback mock wrongly SSRF-blocked (breaks provider telemetry test)"
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else
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pass "dev loopback mock allowed to reach fetch (backward compatible)"
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fi
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# 3) enforced + loopback → blocked.
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out_of env CASAN_SSRF_STRICT=1 bash "$FETCH" "https://127.0.0.1/usage" "$OUT" | grep -q "SSRF_BLOCKED\|internal_ip" \
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&& pass "enforced: loopback blocked" || fail "enforced loopback not blocked"
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# 4) enforced + cloud metadata IP → blocked.
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out_of env CASAN_SSRF_STRICT=1 bash "$FETCH" "https://169.254.169.254/latest/meta-data" "$OUT" | grep -q "SSRF_BLOCKED\|internal_ip" \
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&& pass "enforced: link-local metadata IP blocked" || fail "metadata IP not blocked"
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# 5) enforced + non-allowlisted host → blocked.
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out_of env CASAN_SSRF_STRICT=1 bash "$FETCH" "https://evil.example.com/usage" "$OUT" | grep -q "SSRF_BLOCKED\|host_not_in_allowlist" \
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&& pass "enforced: non-allowlisted host blocked" || fail "non-allowlisted host not blocked"
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# 6) dashboard refuses non-loopback bind in enforced mode.
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out_of env CASAN_DASHBOARD_STRICT=1 CASAN_DASHBOARD_BIND=0.0.0.0 CASAN_DASHBOARD_PORT=0 \
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python3 "$S/dashboard-server.py" | grep -q "DASHBOARD_BIND_REFUSED" \
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&& pass "enforced: dashboard refuses 0.0.0.0 bind" || fail "dashboard allowed 0.0.0.0 in enforced mode"
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echo ""
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echo "===== SEC-13 SUMMARY: PASS=$PASS FAIL=$FAIL ====="
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[[ "$FAIL" -eq 0 ]] || exit 1
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