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>> Bochs NE2000 RX Frame Heap Overflow and Floppy Disk Controller DoS Vulnerabilities
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Title : Bochs NE2000 RX Frame Heap Overflow and Floppy Disk Controller DoS Vulnerabilities
VUPEN ID : VUPEN/ADV-2007-1936
CVE ID : CVE-2007-2893 - CVE-2007-2894
Rated as : Moderate Risk 
Remotely Exploitable : No
Locally Exploitable : Yes
Release Date : 2007-05-24
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Two vulnerabilities have been identified in Bochs, which could be exploited by malicious users to execute arbitrary code or cause a denial of service.
The first issue is caused by a heap overflow error in the emulated NE2000 device that allows a large value in the TXCNT register to exceed the available memory, which could be exploited by an attacker with "root" privileges on a vulnerable guest system to execute arbitrary code on the host system.
The second vulnerability is caused by a divide-by-zero in the emulated floppy disk controller, which could be exploited by malicious users to terminate the bochs process, creating a denial of service condition.
Affected Products
Bochs version 2.3 and prior
Solution
VUPEN Security is not aware of any vendor-supplied patch.
References
http://www.vupen.com/english/advisories/2007/1936
http://taviso.decsystem.org/virtsec.pdf
Credits
Vulnerabilities reported by Tavis Ormandy (Google).
ChangeLog
2007-05-24 : Initial release
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