Description
The Lithtech engine, as used in (1) Contract Jack 1.1 and earlier, (2) No one lives forever 2 1.3 and earlier, (3) Tron 2.0 1.042 and earlier, (4) F.E.A.R. (First Encounter Assault and Recon), and possibly other games, allows remote attackers to cause a denial of service (connection refused) via a UDP packet that causes recvfrom to generate a return code that causes the listening loop to exit, as demonstrated using zero byte packets or packets between 8193 and 12280 bytes, which result in conditions that are not "Operation would block."
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.
Exploit-DB 1
- Lithtech Engine (new protocol) - Socket Unreacheable Denial of Service EDB-683 · dos · Dec 13, 2004 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 13446 third-party-advisory
- http://aluigi.altervista.org/adv/lithsock-adv.txt
- lithtech-engine-communication-dos(18456) vdb-entry
- 20051021 F.E.A.R. 1.01 likes lithsock mailing-list
- 17317 third-party-advisory
- 11902 vdb-entry
- 20041213 Socket unreacheable in the Lithtech engine (new protocol) mailing-list
- 20041213 Socket unreacheable in the Lithtech engine (new protocol) mailing-list