Multiple buffer overflows in Doomsday (aka deng) 1.9.0-beta5.1 and earlier allow remote attackers to execute arbitrary code via a long chat (PKT_CHAT) message that is not properly handled by the (1) D_NetPlayerEvent function in d_net.c or the (2) Msg_Write function in net_msg.c, or (3) many commands that are not properly handled by the NetSv_ReadCommands function in d_netsv.c; or (4) cause a denial of service (daemon crash) via a chat (PKT_CHAT) message without a final ‘\0’ character.
aluigi.altervista.org/adv/dumsdei-adv.txt
aluigi.org/poc/dumsdei.zip
bugs.gentoo.org/show_bug.cgi?id=190835
secunia.com/advisories/26524
secunia.com/advisories/28821
security.gentoo.org/glsa/glsa-200802-02.xml
securityreason.com/securityalert/3084
www.securityfocus.com/archive/1/478077/100/0/threaded
www.securityfocus.com/bid/25483
exchange.xforce.ibmcloud.com/vulnerabilities/36332
exchange.xforce.ibmcloud.com/vulnerabilities/36333
exchange.xforce.ibmcloud.com/vulnerabilities/36334