Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| PMSoftware | Simple Web Server | 2.2 rc2 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Metasploit 2 modules
-
Simple Web Server Connection Header Buffer Overflow
exploit/windows/http/sws_connection_bof
-
S.O.M.P.L 1.0 Player Buffer Overflow
exploit/windows/fileformat/somplplayer_m3u
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/sws_connection_bof.rb exploit
- https://www.exploit-db.com/exploits/19937 exploit
- https://www.exploit-db.com/exploits/20028 exploit
- http://ghostinthelab.wordpress.com/2012/07/19/simplewebserver-2-2-rc2-remote-buffer-overflow-exploit/ technical-description exploit
- http://www.pmx.it/software/sws.asp product
- https://www.vulncheck.com/advisories/simple-web-server-connection-header-buffer-overflow third-party-advisory