CVE-2009-20008 Green Dam 3.17 URL Processing Buffer Overflow
A remote attacker can execute arbitrary code by tricking a user into visiting a webpage with a long URL, exploiting a stack-based buffer overflow in the URL filtering component.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2009-20008?
CVE-2009-20008 is a high-severity memory corruption vulnerability in Zhengzhou Jinhui Computer System Engineering Co. Ltd. ; Beijing Dazheng Human Language Technology Academy Green Dam Youth Escort, published on 30 Aug 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-121
Which versions are affected by CVE-2009-20008?
How do I fix CVE-2009-20008?
No fix has been published for CVE-2009-20008 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2009-20008 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-20008 exists.
Public exploit code: 1 Metasploit module.
Sources
Also known as GHSA-77h7-jw4m-wrmh.