CVE-2009-20008

HIGH

Green Dam Youth Escort <3.17 - Buffer Overflow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 3 public exploits for CVE-2009-20008. PoCs published by Trancer, seer[N.N.U], including Metasploit module exploits/windows/browser/greendam_url.

AI-analyzed exploit summary This exploit targets a stack-based buffer overflow in Green Dam Youth Escort 3.17 by sending an overly long URL to trigger arbitrary code execution. It uses a .NET DLL memory technique to bypass DEP, NX, and ASLR.

Description

Green Dam Youth Escort version 3.17 is vulnerable to a stack-based buffer overflow when processing overly long URLs. The flaw resides in the URL filtering component, which fails to properly validate input length before copying user-supplied data into a fixed-size buffer. A remote attacker can exploit this vulnerability by enticing a user to visit a specially crafted webpage containing a long URL, resulting in arbitrary code execution.

Exploits (3)

exploitdb WORKING POC VERIFIED
by Trancer · rubyremotewindows
https://www.exploit-db.com/exploits/8969

This exploit targets a stack-based buffer overflow in Green Dam Youth Escort 3.17 by sending an overly long URL to trigger arbitrary code execution. It uses a .NET DLL memory technique to bypass DEP, NX, and ASLR.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Green Dam Youth Escort 3.17
No auth needed
Prerequisites: Victim must visit a malicious URL · Green Dam Youth Escort 3.17 must be installed
devstral-2 · analyzed Feb 16, 2026 Full analysis →
exploitdb WORKING POC VERIFIED
by seer[N.N.U] · textremotewindows
https://www.exploit-db.com/exploits/8938

This exploit targets a stack-based buffer overflow in Green Dam software, which is injected into browser processes for URL monitoring. It leverages a .NET binary to deploy shellcode, bypassing DEP and ASLR on Vista, and requires an IIS-hosted exploit page with a .NET control.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Green Dam (version unspecified, likely pre-2009)
No auth needed
Prerequisites: Target must have Green Dam installed · Exploit page must be hosted on IIS · Victim must visit the exploit page using IE
devstral-2 · analyzed Feb 16, 2026 Full analysis →
metasploit WORKING POC NORMAL
rubypocwin
https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/browser/greendam_url.rb

This Metasploit module exploits a stack-based buffer overflow in Green Dam Youth Escort 3.17 by sending an overly long URL to trigger arbitrary code execution. It uses a .NET DLL memory technique to bypass DEP, NX, and ASLR.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Green Dam Youth Escort 3.17
No auth needed
Prerequisites: Victim must visit a malicious URL · Green Dam Youth Escort 3.17 installed on target system
devstral-2 · analyzed Feb 19, 2026 Full analysis →

Scores

CVSS v4 8.6
EPSS 0.0085
EPSS Percentile 53.2%
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-121
Status published
Products (2)
Zhengzhou Jinhui Computer System Engineering Co. Ltd. ; Beijing Dazheng Human Language Technology Academy/Green Dam Youth Escort < 3.174
Zhengzhou Jinhui Computer System Engineering Co. Ltd. ; Beijing Dazheng Human Language Technology Academy/Green Dam Youth Escort 3.17
Published Aug 30, 2025
Tracked Since Feb 18, 2026