Debian Security Advisory

DSA-3361-1 qemu -- security update

Date Reported:
18 Sep 2015
Affected Packages:
qemu
Vulnerable:
Yes
Security database references:
In the Debian bugtracking system: Bug 798101, Bug 799073, Bug 799074.
In Mitre's CVE dictionary: CVE-2015-5278, CVE-2015-5279, CVE-2015-6815, CVE-2015-6855.
More information:

Several vulnerabilities were discovered in qemu, a fast processor emulator.

  • CVE-2015-5278

    Qinghao Tang of QIHU 360 Inc. discovered an infinite loop issue in the NE2000 NIC emulation. A privileged guest user could use this flaw to mount a denial of service (QEMU process crash).

  • CVE-2015-5279

    Qinghao Tang of QIHU 360 Inc. discovered a heap buffer overflow flaw in the NE2000 NIC emulation. A privileged guest user could use this flaw to mount a denial of service (QEMU process crash), or potentially to execute arbitrary code on the host with the privileges of the hosting QEMU process.

  • CVE-2015-6815

    Qinghao Tang of QIHU 360 Inc. discovered an infinite loop issue in the e1000 NIC emulation. A privileged guest user could use this flaw to mount a denial of service (QEMU process crash).

  • CVE-2015-6855

    Qinghao Tang of QIHU 360 Inc. discovered a flaw in the IDE subsystem in QEMU occurring while executing IDE's WIN_READ_NATIVE_MAX command to determine the maximum size of a drive. A privileged guest user could use this flaw to mount a denial of service (QEMU process crash).

For the oldstable distribution (wheezy), these problems have been fixed in version 1.1.2+dfsg-6a+deb7u11.

For the stable distribution (jessie), these problems have been fixed in version 1:2.1+dfsg-12+deb8u4.

For the testing distribution (stretch), these problems have been fixed in version 1:2.4+dfsg-3 or earlier.

For the unstable distribution (sid), these problems have been fixed in version 1:2.4+dfsg-3 or earlier.

We recommend that you upgrade your qemu packages.