Doomsday Sv_HandlePacket() underflow
| doomsday-svhandlepacket-underflow (36338) |  Low Risk |
Description:
Doomsday is vulnerable to an integer underflow, caused by improper handling of chat messages by the Sv_HandlePacket() function. By sending a specially-crafted PKT_CHAT packet, a remote attacker could attempt to allocate an overly large amount of memory which could cause the application to crash.
Platforms Affected:
- Gentoo, Linux
- Jaakko Keränen, Doomsday 1.9.0-b5.1 and prior
Remedy:
No remedy available as of December 2007.
Consequences:
Denial of Service
References:
- Doomsday Web site, Doomsday HQ: Recent News at http://www.doomsdayhq.com/.
- Luigi Auriemma Advisory 29 Aug 2007, Multiple vulnerabilities in Doomsday 1.9.0-beta5.1 at http://aluigi.altervista.org/adv/dumsdei-adv.txt.
- BID-25483: Doomsday Engine Multiple Remote Vulnerabilities
- CVE-2007-4643: 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.
- GLSA-200802-02: Doomsday: Multiple vulnerabilities
- SA26524: Doomsday Multiple Vulnerabilities
- SA28821: Gentoo doomsday Multiple Vulnerabilities
Reported:
Aug 29, 2007
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