3.6 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:N/A:P
8.4 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H
0.001 Low
EPSS
Percentile
28.1%
Security Fix(es) :
Bug Fix(es) :
#%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(96600);
script_version("3.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");
script_cve_id("CVE-2016-2857");
script_name(english:"Scientific Linux Security Update : qemu-kvm on SL7.x x86_64 (20170117)");
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:
"Security Fix(es) :
- An out-of-bounds read-access flaw was found in the QEMU
emulator built with IP checksum routines. The flaw could
occur when computing a TCP/UDP packet's checksum,
because a QEMU function used the packet's payload length
without checking against the data buffer's size. A user
inside a guest could use this flaw to crash the QEMU
process (denial of service). (CVE-2016-2857)
Bug Fix(es) :
- Previously, rebooting a guest virtual machine more than
128 times in a short period of time caused the guest to
shut down instead of rebooting, because the virtqueue
was not cleaned properly. This update ensures that the
virtqueue is cleaned more reliably, which prevents the
described problem from occurring."
);
# https://listserv.fnal.gov/scripts/wa.exe?A2=ind1701&L=scientific-linux-errata&F=&S=&P=10144
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?c8c4b41a"
);
script_set_attribute(attribute:"solution", value:"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:P");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:qemu-img");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:qemu-kvm");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:qemu-kvm-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:qemu-kvm-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:qemu-kvm-tools");
script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");
script_set_attribute(attribute:"vuln_publication_date", value:"2016/04/12");
script_set_attribute(attribute:"patch_publication_date", value:"2017/01/17");
script_set_attribute(attribute:"plugin_publication_date", value:"2017/01/18");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2017-2021 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:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Scientific Linux 7.x", "Scientific Linux " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") 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:"SL7", cpu:"x86_64", reference:"qemu-img-1.5.3-126.el7_3.3")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"qemu-kvm-1.5.3-126.el7_3.3")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"qemu-kvm-common-1.5.3-126.el7_3.3")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"qemu-kvm-debuginfo-1.5.3-126.el7_3.3")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"qemu-kvm-tools-1.5.3-126.el7_3.3")) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_NOTE,
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, "qemu-img / qemu-kvm / qemu-kvm-common / qemu-kvm-debuginfo / etc");
}
Vendor | Product | Version | CPE |
---|---|---|---|
fermilab | scientific_linux | qemu-img | p-cpe:/a:fermilab:scientific_linux:qemu-img |
fermilab | scientific_linux | qemu-kvm | p-cpe:/a:fermilab:scientific_linux:qemu-kvm |
fermilab | scientific_linux | qemu-kvm-common | p-cpe:/a:fermilab:scientific_linux:qemu-kvm-common |
fermilab | scientific_linux | qemu-kvm-debuginfo | p-cpe:/a:fermilab:scientific_linux:qemu-kvm-debuginfo |
fermilab | scientific_linux | qemu-kvm-tools | p-cpe:/a:fermilab:scientific_linux:qemu-kvm-tools |
fermilab | scientific_linux | x-cpe:/o:fermilab:scientific_linux |
3.6 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:N/A:P
8.4 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H
0.001 Low
EPSS
Percentile
28.1%