CVE-2012-10053

Simple Web Server 2.2 rc2 contains a stack-based buffer overflow vulnerability in its handling of the Connection HTTP header. When a remote attacker sends an overly long string in this header, the server uses vsprintf() without proper bounds checking, leading to a buffer overflow on the stack. This flaw allows remote attackers to execute arbitrary code with the privileges of the web server process. The vulnerability is triggered before authentication.

Score

CVSS 4.0 9.3 Critical

Status

Deferred - disclosure@vulncheck.com

Published

2025-08-08

Last modified

2026-04-07

Weaknesses

CWE-121

Affected products

• Simple Web Server (Pmsoftware)

References

• http://ghostinthelab.wordpress.com/2012/07/19/simplewebserver-2-2-rc2-remote-buffer-overflow-exploit/
• http://www.pmx.it/software/sws.asp
• https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/sws_connection_bof.rb
• https://www.exploit-db.com/exploits/19937
• https://www.exploit-db.com/exploits/20028
• https://www.vulncheck.com/advisories/simple-web-server-connection-header-buffer-overflow