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.
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.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2017:1205. The text
# itself is copyright (C) Red Hat, Inc.
#
include("compat.inc");
if (description)
{
script_id(100142);
script_version("3.12");
script_cvs_date("Date: 2019/10/24 15:35:43");
script_cve_id("CVE-2016-9603", "CVE-2017-2633", "CVE-2017-7718", "CVE-2017-7980");
script_xref(name:"RHSA", value:"2017:1205");
script_name(english:"RHEL 6 : qemu-kvm-rhev (RHSA-2017:1205)");
script_summary(english:"Checks the rpm output for the updated packages");
script_set_attribute(
attribute:"synopsis",
value:"The remote Red Hat host is missing one or more security updates."
);
script_set_attribute(
attribute:"description",
value:
"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.
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."
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/errata/RHSA-2017:1205"
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/security/cve/cve-2016-9603"
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/security/cve/cve-2017-2633"
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/security/cve/cve-2017-7718"
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/security/cve/cve-2017-7980"
);
script_set_attribute(attribute:"solution", value:"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-img-rhev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm-rhev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm-rhev-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm-rhev-tools");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");
script_set_attribute(attribute:"vuln_publication_date", value:"2017/04/20");
script_set_attribute(attribute:"patch_publication_date", value:"2017/05/09");
script_set_attribute(attribute:"plugin_publication_date", value:"2017/05/12");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"Red Hat Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
os_ver = os_ver[1];
if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 6.x", "Red Hat " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);
if ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu);
yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo))
{
rhsa = "RHSA-2017:1205";
yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
if (!empty_or_null(yum_report))
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : yum_report
);
exit(0);
}
else
{
audit_message = "affected by Red Hat security advisory " + rhsa;
audit(AUDIT_OS_NOT, audit_message);
}
}
else
{
flag = 0;
if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"qemu-img-rhev-0.12.1.2-2.503.el6_9.3")) flag++;
if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"qemu-kvm-rhev-0.12.1.2-2.503.el6_9.3")) flag++;
if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"qemu-kvm-rhev-debuginfo-0.12.1.2-2.503.el6_9.3")) flag++;
if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"qemu-kvm-rhev-tools-0.12.1.2-2.503.el6_9.3")) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : rpm_report_get() + redhat_report_package_caveat()
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "qemu-img-rhev / qemu-kvm-rhev / qemu-kvm-rhev-debuginfo / etc");
}
}
Vendor | Product | Version | CPE |
---|---|---|---|
redhat | enterprise_linux | qemu-img-rhev | p-cpe:/a:redhat:enterprise_linux:qemu-img-rhev |
redhat | enterprise_linux | qemu-kvm-rhev | p-cpe:/a:redhat:enterprise_linux:qemu-kvm-rhev |
redhat | enterprise_linux | qemu-kvm-rhev-debuginfo | p-cpe:/a:redhat:enterprise_linux:qemu-kvm-rhev-debuginfo |
redhat | enterprise_linux | qemu-kvm-rhev-tools | p-cpe:/a:redhat:enterprise_linux:qemu-kvm-rhev-tools |
redhat | enterprise_linux | 6 | cpe:/o:redhat:enterprise_linux:6 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9603
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2633
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7718
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7980
access.redhat.com/errata/RHSA-2017:1205
access.redhat.com/security/cve/cve-2016-9603
access.redhat.com/security/cve/cve-2017-2633
access.redhat.com/security/cve/cve-2017-7718
access.redhat.com/security/cve/cve-2017-7980