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AUSCERT External Security Bulletin Redistribution
ESB-2017.1167
Important: qemu-kvm-rhev security update
10 May 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: qemu-kvm-rhev
qemu-kvm
Publisher: Red Hat
Operating System: Red Hat
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2017-7980 CVE-2017-7718 CVE-2017-2633
CVE-2016-9603
Reference: ESB-2017.1109
ESB-2017.1036
ESB-2017.1017
ESB-2017.0987
Original Bulletin:
https://access.redhat.com/errata/RHSA-2017:1205
https://access.redhat.com/errata/RHSA-2017:1206
Comment: This bulletin contains two (2) Red Hat security advisories.
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Red Hat Security Advisory
Synopsis: Important: qemu-kvm-rhev security update
Advisory ID: RHSA-2017:1205-01
Product: Red Hat Virtualization
Advisory URL: https://access.redhat.com/errata/RHSA-2017:1205
Issue date: 2017-05-09
CVE Names: CVE-2016-9603 CVE-2017-2633 CVE-2017-7718
CVE-2017-7980
=====================================================================
1. Summary:
An update for qemu-kvm-rhev is now available for RHEV 3.X Hypervisor and
Agents for RHEL-6.
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
2. Relevant releases/architectures:
RHEV Agents (vdsm) - x86_64
3. Description:
KVM (Kernel-based Virtual Machine) is a full virtualization solution for
Linux on a variety of architectures. The qemu-kvm-rhev packages provide the
user-space component for running virtual machines that use KVM in
environments managed by Red Hat products.
Security Fix(es):
* A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA
emulator's VNC display driver support; the issue could occur when a VNC
client attempted to update its display after a VGA operation is performed
by a guest. A privileged user/process inside a guest could use this flaw to
crash the QEMU process or, potentially, execute arbitrary code on the host
with privileges of the QEMU process. (CVE-2016-9603)
* Quick Emulator (QEMU) built with the Cirrus CLGD 54xx VGA Emulator
support is vulnerable to an out-of-bounds r/w access issue. The
vulnerability could occur while copying VGA data via various bitblt
functions. A privileged user inside the guest could use this flaw to crash
the QEMU process (DoS) or potentially execute arbitrary code on a host with
privileges of the host's QEMU process. (CVE-2017-7980)
* Quick Emulator (QEMU) built with the VNC display driver support is
vulnerable to an out-of-bounds memory access issue. The vulnerability could
occur while refreshing the VNC display surface area in the
'vnc_refresh_server_surface'. A user/process inside the guest could use
this flaw to crash the QEMU process, resulting in a DoS. (CVE-2017-2633)
* Quick Emulator (QEMU) built with the Cirrus CLGD 54xx VGA Emulator
support is vulnerable to an out-of-bounds access issue. The vulnerability
could occur while copying VGA data using bitblt functions (for example,
cirrus_bitblt_rop_fwd_transp_). A privileged user inside a guest could use
this flaw to crash the QEMU process, resulting in DoS. (CVE-2017-7718)
Red Hat would like to thank Jiangxin (PSIRT Huawei Inc.) Li Qiang (Qihoo
360 Gear Team) for reporting CVE-2017-7980 and Jiangxin (PSIRT Huawei Inc.)
for reporting CVE-2017-7718.
4. Solution:
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
After installing this update, shut down all running virtual machines. Once
all virtual machines have shut down, start them again for this update to
take effect.
5. Bugs fixed (https://bugzilla.redhat.com/):
1425939 - CVE-2017-2633 Qemu: VNC: memory corruption due to unchecked resolution limit
1430056 - CVE-2016-9603 Qemu: cirrus: heap buffer overflow via vnc connection
1443441 - CVE-2017-7718 Qemu: display: cirrus: OOB read access issue
1444371 - CVE-2017-7980 Qemu: display: cirrus: OOB r/w access issues in bitblt routines
6. Package List:
RHEV Agents (vdsm):
Source:
qemu-kvm-rhev-0.12.1.2-2.503.el6_9.3.src.rpm
x86_64:
qemu-img-rhev-0.12.1.2-2.503.el6_9.3.x86_64.rpm
qemu-kvm-rhev-0.12.1.2-2.503.el6_9.3.x86_64.rpm
qemu-kvm-rhev-debuginfo-0.12.1.2-2.503.el6_9.3.x86_64.rpm
qemu-kvm-rhev-tools-0.12.1.2-2.503.el6_9.3.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2016-9603
https://access.redhat.com/security/cve/CVE-2017-2633
https://access.redhat.com/security/cve/CVE-2017-7718
https://access.redhat.com/security/cve/CVE-2017-7980
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2017 Red Hat, Inc.
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=====================================================================
Red Hat Security Advisory
Synopsis: Important: qemu-kvm security update
Advisory ID: RHSA-2017:1206-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:1206
Issue date: 2017-05-09
CVE Names: CVE-2016-9603 CVE-2017-2633 CVE-2017-7718
CVE-2017-7980
=====================================================================
1. Summary:
An update for qemu-kvm is now available for Red Hat Enterprise Linux 6.
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
3. Description:
Kernel-based Virtual Machine (KVM) is a full virtualization solution for
Linux on a variety of architectures. The qemu-kvm package provides the
user-space component for running virtual machines that use KVM.
Security Fix(es):
* A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA
emulator's VNC display driver support; the issue could occur when a VNC
client attempted to update its display after a VGA operation is performed
by a guest. A privileged user/process inside a guest could use this flaw to
crash the QEMU process or, potentially, execute arbitrary code on the host
with privileges of the QEMU process. (CVE-2016-9603)
* An out-of-bounds r/w access issue was found in QEMU's Cirrus CLGD 54xx
VGA Emulator support. The vulnerability could occur while copying VGA data
via various bitblt functions. A privileged user inside a guest could use
this flaw to crash the QEMU process or, potentially, execute arbitrary code
on the host with privileges of the QEMU process. (CVE-2017-7980)
* An out-of-bounds memory access issue was found in QEMU's VNC display
driver support. The vulnerability could occur while refreshing the VNC
display surface area in the 'vnc_refresh_server_surface'. A user/process
inside a guest could use this flaw to crash the QEMU process, resulting in
a denial of service. (CVE-2017-2633)
* An out-of-bounds access issue was found in QEMU's Cirrus CLGD 54xx VGA
Emulator support. The vulnerability could occur while copying VGA data
using bitblt functions (for example, cirrus_bitblt_rop_fwd_transp_). A
privileged user inside a guest could use this flaw to crash the QEMU
process, resulting in denial of service. (CVE-2017-7718)
Red Hat would like to thank Jiangxin (PSIRT Huawei Inc.) and Li Qiang
(Qihoo 360 Gear Team) for reporting CVE-2017-7980 and Jiangxin (PSIRT
Huawei Inc.) for reporting CVE-2017-7718.
4. Solution:
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
After installing this update, shut down all running virtual machines. Once
all virtual machines have shut down, start them again for this update to
take effect.
5. Bugs fixed (https://bugzilla.redhat.com/):
1400438 - CVE-2017-2633 qemu-kvm coredump in vnc_refresh_server_surface [rhel-6.9.z]
1425939 - CVE-2017-2633 Qemu: VNC: memory corruption due to unchecked resolution limit
1430056 - CVE-2016-9603 Qemu: cirrus: heap buffer overflow via vnc connection
1437060 - Fails to build in brew
1443441 - CVE-2017-7718 Qemu: display: cirrus: OOB read access issue
1444371 - CVE-2017-7980 Qemu: display: cirrus: OOB r/w access issues in bitblt routines
6. Package List:
Red Hat Enterprise Linux Desktop (v. 6):
Source:
qemu-kvm-0.12.1.2-2.503.el6_9.3.src.rpm
i386:
qemu-guest-agent-0.12.1.2-2.503.el6_9.3.i686.rpm
qemu-kvm-debuginfo-0.12.1.2-2.503.el6_9.3.i686.rpm
x86_64:
qemu-guest-agent-0.12.1.2-2.503.el6_9.3.x86_64.rpm
qemu-img-0.12.1.2-2.503.el6_9.3.x86_64.rpm
qemu-kvm-0.12.1.2-2.503.el6_9.3.x86_64.rpm
qemu-kvm-debuginfo-0.12.1.2-2.503.el6_9.3.x86_64.rpm
qemu-kvm-tools-0.12.1.2-2.503.el6_9.3.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
qemu-kvm-0.12.1.2-2.503.el6_9.3.src.rpm
x86_64:
qemu-guest-agent-0.12.1.2-2.503.el6_9.3.x86_64.rpm
qemu-img-0.12.1.2-2.503.el6_9.3.x86_64.rpm
qemu-kvm-0.12.1.2-2.503.el6_9.3.x86_64.rpm
qemu-kvm-debuginfo-0.12.1.2-2.503.el6_9.3.x86_64.rpm
qemu-kvm-tools-0.12.1.2-2.503.el6_9.3.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
qemu-kvm-0.12.1.2-2.503.el6_9.3.src.rpm
i386:
qemu-guest-agent-0.12.1.2-2.503.el6_9.3.i686.rpm
qemu-kvm-debuginfo-0.12.1.2-2.503.el6_9.3.i686.rpm
ppc64:
qemu-guest-agent-0.12.1.2-2.503.el6_9.3.ppc64.rpm
qemu-kvm-debuginfo-0.12.1.2-2.503.el6_9.3.ppc64.rpm
x86_64:
qemu-guest-agent-0.12.1.2-2.503.el6_9.3.x86_64.rpm
qemu-img-0.12.1.2-2.503.el6_9.3.x86_64.rpm
qemu-kvm-0.12.1.2-2.503.el6_9.3.x86_64.rpm
qemu-kvm-debuginfo-0.12.1.2-2.503.el6_9.3.x86_64.rpm
qemu-kvm-tools-0.12.1.2-2.503.el6_9.3.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
qemu-kvm-0.12.1.2-2.503.el6_9.3.src.rpm
i386:
qemu-guest-agent-0.12.1.2-2.503.el6_9.3.i686.rpm
qemu-kvm-debuginfo-0.12.1.2-2.503.el6_9.3.i686.rpm
x86_64:
qemu-guest-agent-0.12.1.2-2.503.el6_9.3.x86_64.rpm
qemu-img-0.12.1.2-2.503.el6_9.3.x86_64.rpm
qemu-kvm-0.12.1.2-2.503.el6_9.3.x86_64.rpm
qemu-kvm-debuginfo-0.12.1.2-2.503.el6_9.3.x86_64.rpm
qemu-kvm-tools-0.12.1.2-2.503.el6_9.3.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2016-9603
https://access.redhat.com/security/cve/CVE-2017-2633
https://access.redhat.com/security/cve/CVE-2017-7718
https://access.redhat.com/security/cve/CVE-2017-7980
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2017 Red Hat, Inc.
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