Doomsday: Multiple vulnerabilities Multiple vulnerabilities in Doomsday might allow remote execution of arbitrary code or a Denial of Service. doomsday 2008-02-06 2008-02-10 190835 remote 1.9.0_beta52

The Doomsday Engine (deng) is a modern gaming engine for popular ID games like Doom, Heretic and Hexen.

Luigi Auriemma discovered multiple buffer overflows in the D_NetPlayerEvent() function, the Msg_Write() function and the NetSv_ReadCommands() function. He also discovered errors when handling chat messages that are not NULL-terminated (CVE-2007-4642) or contain a short data length, triggering an integer underflow (CVE-2007-4643). Furthermore a format string vulnerability was discovered in the Cl_GetPackets() function when processing PSV_CONSOLE_TEXT messages (CVE-2007-4644).

A remote attacker could exploit these vulnerabilities to execute arbitrary code with the rights of the user running the Doomsday server or cause a Denial of Service by sending specially crafted messages to the server.

There is no known workaround at this time.

While some of these issues could be resolved in "games-fps/doomsday-1.9.0-beta5.2", the format string vulnerability (CVE-2007-4644) remains unfixed. We recommend that users unmerge Doomsday:

# emerge --unmerge games-fps/doomsday CVE-2007-4642 CVE-2007-4643 CVE-2007-4644 rbu rbu rbu