CriticalPublic exploit

Remote SEH-based stack buffer overflow in Sunway ForceControl NetDBServer

IdentifiersCVE-2011-10032CWE-121· Stack-based Buffer Overflow

CVE-2011-10032 is a stack-based buffer overflow in the SNMP NetDBServer service of Sunway ForceControl 6.1 SP3 and earlier. The vulnerable service listens on TCP port 2001 and improperly validates the length of data while parsing a network packet. The issue is triggered by sending a specially crafted packet with opcode 0x57 containing an overly long payload. During parsing, insufficient bounds checking allows attacker-controlled input to overflow a stack buffer and overwrite the Structured Exception Handler (SEH). This memory corruption condition can be leveraged to redirect execution and achieve arbitrary code execution in the security context of the NetDBServer service on affected Windows systems.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows unauthenticated remote code execution against the exposed NetDBServer service. Because the overflow permits SEH overwrite with attacker-controlled data, an attacker can execute arbitrary code in the context of the service process. On affected Windows hosts, this may result in full system compromise depending on the privileges under which the service runs, including installation of malware, persistence, data theft, lateral movement, or disruption of industrial control operations managed by the ForceControl deployment.

Mitigation

If you can’t patch tonight, do this now.

Until patching is completed, restrict access to TCP port 2001 so only trusted management hosts can reach the NetDBServer service. Block untrusted network paths with host-based and perimeter firewalls, segment affected ICS/SCADA assets from corporate and internet-connected networks, and disable the vulnerable service if it is not required. Additional compensating controls include monitoring for malformed or unexpected traffic to port 2001, especially packets using opcode 0x57 with abnormal payload lengths, and running the service with the least privileges possible to reduce post-exploitation impact.

Remediation

Patch, then assume compromise.

Upgrade Sunway ForceControl to a version newer than 6.1 SP3 that corrects the bounds checking flaw in the NetDBServer packet parser. If a vendor-supplied security update or fixed release is available, apply it to all affected systems. Validate that the SNMP NetDBServer component is updated specifically, and confirm the service no longer accepts malformed opcode 0x57 packets that can trigger the overflow.

PUBLIC EXPLOITS

Exploits

1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.

VALID 1 / 1 TOTALView more in app

sunway_force_control_netdbsrv.rbMaturityWeaponizedFrameworkmetasploitVerified exploit

This repository contains a single Metasploit module targeting a stack-based buffer overflow vulnerability in the Sunway Forcecontrol SNMP NetDBServer service (NetDBServer.exe) for Windows (version 6.1 sp3 and earlier). The exploit connects to the service on TCP port 2001 and sends a specially crafted packet that overflows a buffer, overwriting the SEH (Structured Exception Handler) and allowing execution of arbitrary code. The payload is customizable via Metasploit, enabling the attacker to execute code of their choice on the target system. The module references CVE-2011-10032 and is attributed to several security researchers. The code is written in Ruby and is structured as a standard Metasploit exploit module, making it easy to use within the Metasploit framework. No hardcoded IP addresses or URLs are present; the main fingerprintable endpoints are the TCP port (2001) and the vulnerable NetDBServer.exe binary.

Disclosed Sep 22, 2011rubynetwork

ACTIVITY FEED

Recent activity

5 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.

5 SOURCESView more in app

No news coverage yet. Advisories and community discussion only.

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Exposure mapping

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Threat actor evidence

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Associated malware

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Detection signatures

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Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity5