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Bochs: Multiple vulnerabilities


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200711-21 / bochs
Release Date November 17, 2007
Latest Revision November 17, 2007: 01
Impact high
Exploitable local
Package Vulnerable versions Unaffected versions Architecture(s)
app-emulation/bochs < 2.3 >= 2.3 All supported architectures

Related bugreports: #188148


Multiple vulnerabilities have been discovered in Bochs, possibly allowing for the execution of arbitrary code or a Denial of Service.

2.  Impact Information


Bochs is a IA-32 (x86) PC emulator written in C++.


Tavis Ormandy of the Google Security Team discovered a heap-based overflow vulnerability in the NE2000 driver (CVE-2007-2893). He also discovered a divide-by-zero error in the emulated floppy disk controller (CVE-2007-2894).


A local attacker in the guest operating system could exploit these issues to execute code outside of the virtual machine, or cause Bochs to crash.

3.  Resolution Information


There is no known workaround at this time.


All Bochs users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-emulation/bochs-2.3"

4.  References


Page updated November 17, 2007

Summary: This is a Gentoo Linux Security Advisory

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