Integer underflow in Doomsday (aka deng) 1.9.0-beta5.1 and earlier allows remote attackers to cause a denial of service (daemon crash) via a PKT_CHAT packet with a data length less than 3, which triggers an erroneous malloc, possibly related to the Sv_HandlePacket function in sv_main.c.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| https://exchange.xforce.ibmcloud.com/vulnerabilities/36338 | vdb entry |
| http://securityreason.com/securityalert/3084 | third party advisory |
| http://secunia.com/advisories/28821 | third party advisory |
| http://bugs.gentoo.org/show_bug.cgi?id=190835 | |
| http://secunia.com/advisories/26524 | third party advisory vendor advisory |
| http://www.securityfocus.com/archive/1/478077/100/0/threaded | mailing list |
| http://www.securityfocus.com/bid/25483 | vdb entry exploit |
| http://security.gentoo.org/glsa/glsa-200802-02.xml | vendor advisory |
| http://aluigi.org/poc/dumsdei.zip | exploit |