Several vulnerabilities have been discovered in the QEMU processor
emulator, which may lead to the execution of arbitrary code or denial of
service. The Common Vulnerabilities and Exposures project identifies the
following problems:
CVE-2007-1320
Tavis Ormandy discovered that a memory management routine of the Cirrus
video driver performs insufficient bounds checking, which might
allow the execution of arbitrary code through a heap overflow.
CVE-2007-1321
Tavis Ormandy discovered that the NE2000 network driver and the socket
code perform insufficient input validation, which might allow the
execution of arbitrary code through a heap overflow.
CVE-2007-1322
Tavis Ormandy discovered that the "icebp" instruction can be abused to
terminate the emulation, resulting in denial of service.
CVE-2007-1323
Tavis Ormandy discovered that the NE2000 network driver and the socket
code perform insufficient input validation, which might allow the
execution of arbitrary code through a heap overflow.
CVE-2007-1366
Tavis Ormandy discovered that the "aam" instruction can be abused to
crash qemu through a division by zero, resulting in denial of
service.
For the testing distribution (lenny) this is fixed in version 0.8.2-5lenny1
For the unstable distribution (sid) this is fixed in version 0.9.0-2
This upgrade is recommended if you use qemu.
If you have the secure testing lines in your sources.list, you can update by running this command as root:
apt-get update && apt-get upgrade
To use the Debian testing security archive, add the following lines to your /etc/apt/sources.list:
deb http://security.debian.org/ testing/updates main contrib non-free
deb-src http://security.debian.org/ testing/updates main contrib non-free
