CVE-2009-20009: Stack Overflow

Description

Belkin Bulldog Plus version 4.0.2 build 1219 contains a stack-based buffer overflow vulnerability in its web service authentication handler. When a specially crafted HTTP request is sent with an oversized Authorization header, the application fails to properly validate the input length before copying it into a fixed-size buffer, resulting in memory corruption and potential remote code execution. Exploitation requires network access and does not require prior authentication.

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Weakness Type (CWE)

CWE-121 CWE-121

References

Other References

https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/belkin_bulldog.rb https://s3.belkin.com/support/dl/bulldogwindows.pdf https://www.exploit-db.com/exploits/8173 https://www.fortiguard.com/encyclopedia/ips/17325/belkin-bulldog-plus-web-services-buffer-overflow https://www.vulncheck.com/advisories/belkin-bulldog-plus-web-service-buffer-overflow

Frequently Asked Questions

What is CVE-2009-20009? +

Belkin Bulldog Plus version 4.0.2 build 1219 contains a stack-based buffer overflow vulnerability in its web service authentication handler. When a specially crafted HTTP request is sent with an oversized Authorization header, the application fails to properly validate the input length before copying it into a fixed-size buffer, resulting in memory corruption and potential remote code execution. Exploitation requires network access and does not require prior authentication.

How do I check if I'm vulnerable to CVE-2009-20009? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2009-20009