T09 · Insecure Skill Coding Practices
- Location
scripts/fw-switch.sh:374- Finding
Scoped firewall disable operations lack a script-enforced confirmation gate
- Content
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Vulnerability Details
File Location:
scripts/fw-switch.sh:374-476
Vulnerability Type: Missing confirmation control for a security-sensitive cloud operation
Risk Level: MediumTechnical Analysis
The
enableanddisablesubcommands share thecmd_enable_disableimplementation. Although the function requires at least one scope dimension, thedisablepath does not accept or enforce a--yesconfirmation parameter before calling the authenticatedPutDisableFwSwitchAPI.Relevant argument parsing and scope validation:
bash local IPS="" REGIONS="" RESOURCE_TYPES="" IP_VERSION="" MEMBER_UID="" DRY_RUN=false while [[ $# -gt 0 ]]; do case "$1" in --ips) IPS="$2"; shift 2 ;; --regions) REGIONS="$2"; shift 2 ;; --resource-types) RESOURCE_TYPES="$2"; shift 2 ;; --ip-version) IP_VERSION="$2"; shift 2 ;; --member-uid) MEMBER_UID="$2"; shift 2 ;; --dry-run) DRY_RUN=true; shift ;; --help|-h) local action_cap="$(printf '%s' "${ACTION:0:1}" | tr '[:lower:]' '[:upper:]')${ACTION:1}" show_help "fw-switch.sh ${ACTION}" \ "${action_cap} firewall protection for specified assets" \ "fw-switch.sh ${ACTION} [options]" \ " --ips <ip1,ip2,...> Comma-separated IP list --regions <r1,r2,...> Comma-separated region list --resource-types <t1,t2,...> Comma-separated resource types --ip-version <4|6> IP version filter --member-uid <uid> Member account UID --dry-run Preview CLI command --help, -h Show this help At least one of --ips, --regions, --resource-types, --ip-version is required. Parameters can be combined for compound filtering." ;; *) log_error "Unknown option: $1"; exit 1 ;; esac done if [[ -z "$IPS" && -z "$REGIONS" && -z "$RESOURCE_TYPES" && -z "$IP_VERSION" ]]; then log_error "At least one of --ips, --regions, --resource-types, --ip-version is requir ...[truncated 3375 chars]- Remediation
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Remediation Suggestions
-
Add a
--yesparameter to the scopeddisablecommand and reject execution when it is absent:bash local YES=false case "$1" in --yes) YES=true; shift ;; # existing options... esac if [[ "$ACTION" == "disable" && "$DRY_RUN" != "true" && "$YES" != "true" ]]; then log_error "Disabling firewall protection requires --yes to confirm." output_error "NotConfirmed" "Operation requires --yes flag to confirm" exit 1 fi -
Perform the confirmation check after local validation and dry-run handling but before
require_attributionandcall_cfw_api, ensuring that no write API is contacted first. -
For stronger protection, bind confirmation to the exact previewed operation. Generate a confirmation token containing or cryptographically covering:
- The Alibaba Cloud account or member UID.
- The action (
disable). - The normalized IP, region, resource-type, and IP-version filters.
- The previewed asset count.
- A short expiration time.
-
Require the execution phase to present the matching token. Reject changes when the account, action, or scope differs from the preview.
-
Apply an additional explicit broad-scope warning or stronger approval requirement when the request uses only
--ip-version, only a region, or only a resource type. -
Add automated tests confirming that:
- Scoped
disablewithout confirmation performs no API call. --dry-runremains non-destructive.- A confirmed command cannot widen or alter the previewed scope.
enable-allanddisable-allretain their existing confirmation behavior.
- Scoped
-