Description
chat.ghp in Easy Chat Server 1.2 allows remote attackers to cause a denial of service (server crash) via a long username parameter, possibly due to a buffer overflow. NOTE: it was later reported that 2.2 is also affected.
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 1 module
-
EFS Easy Chat Server Authentication Request Handling Buffer Overflow
exploit/windows/http/efs_easychatserver_username
Exploit-DB 4
- Easy Chat Server 3.1 - Remote Stack Buffer Overflow (SEH) EDB-50999 · remote · Aug 1, 2022
- EFS Easy Chat Server 3.1 - Remote Stack Buffer Overflow EDB-33326 · remote · May 12, 2014 · verified
- EFS Easy Chat Server - Authentication Request Handling Buffer Overflow (Metasploit) EDB-16772 · remote · Aug 6, 2010 · verified
- EFS Easy Chat Server 2.2 - Remote Denial of Service EDB-4289 · dos · Aug 14, 2007 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 25328 vdb-entry
- 67384 vdb-entry
- 58427 third-party-advisory
- easychatserver-username-dos(36013) vdb-entry
- 33326 exploit
- 20040702 Multiple Vulnerabilities in Easy Chat Server 1.2 mailing-list
- 12006 third-party-advisory
- easychat-chatghp-username-dos(16629) vdb-entry
- http://www.autistici.org/fdonato/advisory/EasyChatServer1.2-adv.txt
- ADV-2007-2901 vdb-entry
- 26461 third-party-advisory
- 4289 exploit
- 7416 vdb-entry
- 20040702 Multiple Vulnerabilities in Easy Chat Server 1.2 mailing-list
- http://packetstormsecurity.com/files/167892/Easy-Chat-Server-3.1-Buffer-Overflow.html