Description
Kaillera Server version 0.86 is vulnerable to a denial-of-service condition triggered by sending a malformed UDP packet after the initial handshake. Once a client sends a valid HELLO0.83 packet and receives a response, any subsequent malformed packet causes the server to crash and become unresponsive. This flaw stems from improper input validation in the server’s UDP packet handler, allowing unauthenticated remote attackers to disrupt service availability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Kaillera Project | Server | ≤ 0.86 | — |
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
-
Kaillera 0.86 Server Denial of Service
auxiliary/dos/windows/games/kaillera
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/auxiliary/dos/windows/games/kaillera.rb exploit
- https://www.exploit-db.com/exploits/17460 exploit
- http://kaillera.com/ product
- https://www.vulncheck.com/advisories/kaillera-server-dos-via-malformed-udp-packet third-party-advisory