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osvGoogleOSV:DSA-3348-1
HistorySep 02, 2015 - 12:00 a.m.

qemu - security update

2015-09-0200:00:00
Google
osv.dev
8

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

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

  • CVE-2015-3214
    Matt Tait of Google’s Project Zero security team discovered a flaw
    in the QEMU i8254 PIT emulation. A privileged guest user in a guest
    with QEMU PIT emulation enabled could potentially use this flaw to
    execute arbitrary code on the host with the privileges of the
    hosting QEMU process.
  • CVE-2015-5154
    Kevin Wolf of Red Hat discovered a heap buffer overflow flaw in the
    IDE subsystem in QEMU while processing certain ATAPI commands. A
    privileged guest user in a guest with the CDROM drive enabled could
    potentially use this flaw to execute arbitrary code on the host with
    the privileges of the hosting QEMU process.
  • CVE-2015-5165
    Donghai Zhu discovered that the QEMU model of the RTL8139 network
    card did not sufficiently validate inputs in the C+ mode offload
    emulation, allowing a malicious guest to read uninitialized memory
    from the QEMU process’s heap.
  • CVE-2015-5225
    Mr Qinghao Tang from QIHU 360 Inc. and Mr Zuozhi from Alibaba Inc
    discovered a buffer overflow flaw in the VNC display driver leading
    to heap memory corruption. 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-2015-5745
    A buffer overflow vulnerability was discovered in the way QEMU
    handles the virtio-serial device. A malicious guest 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+deb7u9. The oldstable distribution is only
affected by CVE-2015-5165 and CVE-2015-5745.

For the stable distribution (jessie), these problems have been fixed in
version 1:2.1+dfsg-12+deb8u2.

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

We recommend that you upgrade your qemu packages.

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C