A flaw was found in the way QEMU’s AMD PCnet Ethernet emulation handled multi-TMD packets with a length above 4096 bytes. A privileged guest user in a guest with an AMD PCNet ethernet card enabled could potentially use this flaw to execute arbitrary code on the host with the privileges of the hosting QEMU process. (CVE-2015-3209)
KVM must be ‘restarted’ before this update will take effect.
Shutdown all KVM virtual machines.
Either reboot or unload and reload the following kernel modules : kvm, ksm, kvm-intel or kvm-amd.
Start the KVM virtual machines.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(84538);
script_version("2.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");
script_cve_id("CVE-2015-3209");
script_name(english:"Scientific Linux Security Update : kvm on SL5.x x86_64 (20150625)");
script_summary(english:"Checks rpm output for the updated packages");
script_set_attribute(
attribute:"synopsis",
value:
"The remote Scientific Linux host is missing one or more security
updates."
);
script_set_attribute(
attribute:"description",
value:
"A flaw was found in the way QEMU's AMD PCnet Ethernet emulation
handled multi-TMD packets with a length above 4096 bytes. A privileged
guest user in a guest with an AMD PCNet ethernet card enabled could
potentially use this flaw to execute arbitrary code on the host with
the privileges of the hosting QEMU process. (CVE-2015-3209)
KVM must be 'restarted' before this update will take effect.
Shutdown all KVM virtual machines.
Either reboot or unload and reload the following kernel
modules : kvm, ksm, kvm-intel or kvm-amd.
Start the KVM virtual machines."
);
# https://listserv.fnal.gov/scripts/wa.exe?A2=ind1506&L=scientific-linux-errata&F=&S=&P=14245
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?ffeb2091"
);
script_set_attribute(attribute:"solution", value:"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kmod-kvm");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kmod-kvm-debug");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kvm");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kvm-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kvm-qemu-img");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kvm-tools");
script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");
script_set_attribute(attribute:"vuln_publication_date", value:"2015/06/15");
script_set_attribute(attribute:"patch_publication_date", value:"2015/06/25");
script_set_attribute(attribute:"plugin_publication_date", value:"2015/07/06");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2015-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"Scientific Linux Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/RedHat/release", "Host/RedHat/rpm-list");
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) || "Scientific Linux " >!< release) audit(AUDIT_HOST_NOT, "running Scientific Linux");
os_ver = pregmatch(pattern: "Scientific Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Scientific Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^5([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Scientific Linux 5.x", "Scientific Linux " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Scientific Linux", cpu);
if ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu);
flag = 0;
if (rpm_check(release:"SL5", cpu:"x86_64", reference:"kmod-kvm-83-273.el5_11")) flag++;
if (rpm_check(release:"SL5", cpu:"x86_64", reference:"kmod-kvm-debug-83-273.el5_11")) flag++;
if (rpm_check(release:"SL5", cpu:"x86_64", reference:"kvm-83-273.el5_11")) flag++;
if (rpm_check(release:"SL5", cpu:"x86_64", reference:"kvm-debuginfo-83-273.el5_11")) flag++;
if (rpm_check(release:"SL5", cpu:"x86_64", reference:"kvm-qemu-img-83-273.el5_11")) flag++;
if (rpm_check(release:"SL5", cpu:"x86_64", reference:"kvm-tools-83-273.el5_11")) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : rpm_report_get()
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "kmod-kvm / kmod-kvm-debug / kvm / kvm-debuginfo / kvm-qemu-img / etc");
}
Vendor | Product | Version | CPE |
---|---|---|---|
fermilab | scientific_linux | kmod-kvm | p-cpe:/a:fermilab:scientific_linux:kmod-kvm |
fermilab | scientific_linux | kmod-kvm-debug | p-cpe:/a:fermilab:scientific_linux:kmod-kvm-debug |
fermilab | scientific_linux | kvm | p-cpe:/a:fermilab:scientific_linux:kvm |
fermilab | scientific_linux | kvm-debuginfo | p-cpe:/a:fermilab:scientific_linux:kvm-debuginfo |
fermilab | scientific_linux | kvm-qemu-img | p-cpe:/a:fermilab:scientific_linux:kvm-qemu-img |
fermilab | scientific_linux | kvm-tools | p-cpe:/a:fermilab:scientific_linux:kvm-tools |
fermilab | scientific_linux | x-cpe:/o:fermilab:scientific_linux |