提出 #857817: H3C NX15 Router NX15V100R017 Command Execution

H3C NX15 Router firmware NX15V100R017 exposes the raw ubus object service through the authenticated /api/esps interface. The vulnerable design allows a remote web user with administrator credentials to call service.add, a privileged service-management RPC that registers new procd service instances and accepts an attacker-controlled command array. The web layer does not constrain this access to a safe subset of operations and therefore exposes internal service-control functionality directly to the management API.

This is a practical root execution primitive rather than a theoretical design concern. By registering a crafted service definition that uses /bin/sh -c or another attacker-controlled command vector, the caller can cause the service manager to launch arbitrary code as root. The issue stems from unsafe exposure of a dangerous backend method across the web/API trust boundary, and exploitation yields immediate root command execution without relying on fragile shell-filter bypasses in a product-specific script.

• ソース: ⚠️ https://github.com/coconut652-7/IOT_Vul_Public/tree/main/H3C/NX15R017/service_add_root_rce_chain
• ユーザー: coconut (UID 98382)
• 送信: 2026年06月13日 09:57 (2 月 ago)
• モデレーション: 2026年08月04日 22:05 (2 months later)
• ステータス: 承諾済み
• VulDBエントリ: 385935 [H3C NX15 V100R017 Web API /api/esps service.add 特権昇格]
• ポイント: 20