Security Fix(es) :
A flaw named FragmentSmack was found in the way the Linux kernel handled reassembly of fragmented IPv4 and IPv6 packets. A remote attacker could use this flaw to trigger time and calculation expensive fragment reassembly algorithm by sending specially crafted packets which could lead to a CPU saturation and hence a denial of service on the system. (CVE-2018-5391)
kernel: Integer overflow in Linux’s create_elf_tables function (CVE-2018-14634)
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#
include("compat.inc");
if (description)
{
script_id(118057);
script_version("1.7");
script_set_attribute(attribute:"plugin_modification_date", value:"2022/02/09");
script_cve_id("CVE-2018-14634", "CVE-2018-5391");
script_name(english:"Scientific Linux Security Update : kernel on SL6.x i386/x86_64 (20181009)");
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) :
- A flaw named FragmentSmack was found in the way the
Linux kernel handled reassembly of fragmented IPv4 and
IPv6 packets. A remote attacker could use this flaw to
trigger time and calculation expensive fragment
reassembly algorithm by sending specially crafted
packets which could lead to a CPU saturation and hence a
denial of service on the system. (CVE-2018-5391)
- kernel: Integer overflow in Linux's create_elf_tables
function (CVE-2018-14634)"
);
# https://listserv.fnal.gov/scripts/wa.exe?A2=ind1810&L=scientific-linux-errata&F=&S=&P=6630
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?ac90b8a1"
);
script_set_attribute(attribute:"solution", value:"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-14634");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-abi-whitelists");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debug");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debug-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debug-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debuginfo-common-i686");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debuginfo-common-x86_64");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-doc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-firmware");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-headers");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:perf");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:perf-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:python-perf");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:python-perf-debuginfo");
script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");
script_set_attribute(attribute:"vuln_publication_date", value:"2018/09/06");
script_set_attribute(attribute:"patch_publication_date", value:"2018/10/09");
script_set_attribute(attribute:"plugin_publication_date", value:"2018/10/11");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2018-2022 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:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Scientific Linux 6.x", "Scientific Linux " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Scientific Linux", cpu);
flag = 0;
if (rpm_check(release:"SL6", reference:"kernel-2.6.32-754.6.3.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-abi-whitelists-2.6.32-754.6.3.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debug-2.6.32-754.6.3.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debug-debuginfo-2.6.32-754.6.3.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debug-devel-2.6.32-754.6.3.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debuginfo-2.6.32-754.6.3.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debuginfo-common-i686-2.6.32-754.6.3.el6")) flag++;
if (rpm_check(release:"SL6", cpu:"x86_64", reference:"kernel-debuginfo-common-x86_64-2.6.32-754.6.3.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-devel-2.6.32-754.6.3.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-doc-2.6.32-754.6.3.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-firmware-2.6.32-754.6.3.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-headers-2.6.32-754.6.3.el6")) flag++;
if (rpm_check(release:"SL6", reference:"perf-2.6.32-754.6.3.el6")) flag++;
if (rpm_check(release:"SL6", reference:"perf-debuginfo-2.6.32-754.6.3.el6")) flag++;
if (rpm_check(release:"SL6", reference:"python-perf-2.6.32-754.6.3.el6")) flag++;
if (rpm_check(release:"SL6", reference:"python-perf-debuginfo-2.6.32-754.6.3.el6")) 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, "kernel / kernel-abi-whitelists / kernel-debug / etc");
}
Vendor | Product | Version | CPE |
---|---|---|---|
fermilab | scientific_linux | perf-debuginfo | p-cpe:/a:fermilab:scientific_linux:perf-debuginfo |
fermilab | scientific_linux | python-perf | p-cpe:/a:fermilab:scientific_linux:python-perf |
fermilab | scientific_linux | python-perf-debuginfo | p-cpe:/a:fermilab:scientific_linux:python-perf-debuginfo |
fermilab | scientific_linux | x-cpe:/o:fermilab:scientific_linux | |
fermilab | scientific_linux | kernel | p-cpe:/a:fermilab:scientific_linux:kernel |
fermilab | scientific_linux | kernel-abi-whitelists | p-cpe:/a:fermilab:scientific_linux:kernel-abi-whitelists |
fermilab | scientific_linux | kernel-debug | p-cpe:/a:fermilab:scientific_linux:kernel-debug |
fermilab | scientific_linux | kernel-debug-debuginfo | p-cpe:/a:fermilab:scientific_linux:kernel-debug-debuginfo |
fermilab | scientific_linux | kernel-debug-devel | p-cpe:/a:fermilab:scientific_linux:kernel-debug-devel |
fermilab | scientific_linux | kernel-debuginfo | p-cpe:/a:fermilab:scientific_linux:kernel-debuginfo |