Multiple format string vulnerabilities in the Monolith Lithtech engine, as used by First Encounter Assault Recon (F.E.A.R.) 1.08 and earlier, when Punkbuster (PB) is enabled, allow remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via format string specifiers in (1) a PB_Y packet to the YPG server on UDP port 27888 or (2) a PB_U packet to UCON on UDP port 27888, different vectors than CVE-2004-1500. NOTE: this issue might be in Punkbuster itself, but there are insufficient details to be certain.

Buffer overflow in Monolith games including (1) Alien versus Predator 2 1.0.9.6 and earlier, (2) Blood 2 2.1 and earlier, (3) No one lives forever 1.004 and earlier and (4) Shogo 2.2 and earlier allows remote attackers to cause a denial of service (application crash) via a long secure Gamespy query.

Format string vulnerability in the Lithtech engine, as used in multiple games, allows remote authenticated users to cause a denial of service (application crash) via format string specifiers in (1) a nickname or (2) a message.

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."