10 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.974 High
EPSS
Percentile
99.9%
An update for kernel 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.
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es) :
hw: cpu: speculative execution permission faults handling (CVE-2017-5754, x86 32-bit)
Kernel: error in exception handling leads to DoS (CVE-2018-8897)
kernel: nfsd: Incorrect handling of long RPC replies (CVE-2017-7645)
kernel: Use-after-free vulnerability in DCCP socket (CVE-2017-8824)
kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation (CVE-2017-13166)
kernel: netfilter: use-after-free in tcpmss_mangle_packet function in net/ netfilter/xt_TCPMSS.c (CVE-2017-18017)
kernel: Stack information leak in the EFS element (CVE-2017-1000410)
For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.
Red Hat would like to thank Google Project Zero for reporting CVE-2017-5754; Nick Peterson (Everdox Tech LLC) and Andy Lutomirski for reporting CVE-2018-8897; Mohamed Ghannam for reporting CVE-2017-8824; and Armis Labs for reporting CVE-2017-1000410.
Bug Fix(es) :
These updated kernel packages include also numerous bug fixes. Space precludes documenting all of these bug fixes in this advisory. See the bug fix descriptions in the related Knowledge Article:
https://access.redhat.com/ articles/3431591
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2018:1319 and
# CentOS Errata and Security Advisory 2018:1319 respectively.
#
include("compat.inc");
if (description)
{
script_id(109655);
script_version("1.8");
script_cvs_date("Date: 2019/12/31");
script_cve_id("CVE-2017-1000410", "CVE-2017-13166", "CVE-2017-18017", "CVE-2017-5754", "CVE-2017-7645", "CVE-2017-8824", "CVE-2018-8897");
script_xref(name:"RHSA", value:"2018:1319");
script_name(english:"CentOS 6 : kernel (CESA-2018:1319) (Meltdown)");
script_summary(english:"Checks rpm output for the updated packages");
script_set_attribute(
attribute:"synopsis",
value:"The remote CentOS host is missing one or more security updates."
);
script_set_attribute(
attribute:"description",
value:
"An update for kernel 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.
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
Security Fix(es) :
* hw: cpu: speculative execution permission faults handling
(CVE-2017-5754, x86 32-bit)
* Kernel: error in exception handling leads to DoS (CVE-2018-8897)
* kernel: nfsd: Incorrect handling of long RPC replies (CVE-2017-7645)
* kernel: Use-after-free vulnerability in DCCP socket (CVE-2017-8824)
* kernel: v4l2: disabled memory access protection mechanism allowing
privilege escalation (CVE-2017-13166)
* kernel: netfilter: use-after-free in tcpmss_mangle_packet function
in net/ netfilter/xt_TCPMSS.c (CVE-2017-18017)
* kernel: Stack information leak in the EFS element (CVE-2017-1000410)
For more details about the security issue(s), including the impact, a
CVSS score, and other related information, refer to the CVE page(s)
listed in the References section.
Red Hat would like to thank Google Project Zero for reporting
CVE-2017-5754; Nick Peterson (Everdox Tech LLC) and Andy Lutomirski
for reporting CVE-2018-8897; Mohamed Ghannam for reporting
CVE-2017-8824; and Armis Labs for reporting CVE-2017-1000410.
Bug Fix(es) :
These updated kernel packages include also numerous bug fixes. Space
precludes documenting all of these bug fixes in this advisory. See the
bug fix descriptions in the related Knowledge Article:
https://access.redhat.com/ articles/3431591"
);
# https://lists.centos.org/pipermail/centos-announce/2018-May/022827.html
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?a9e9484b"
);
script_set_attribute(
attribute:"solution",
value:"Update the affected kernel packages."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-18017");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploited_by_malware", value:"true");
script_set_attribute(attribute:"metasploit_name", value:'Microsoft Windows POP/MOV SS Local Privilege Elevation Vulnerability');
script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-abi-whitelists");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-debug");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-debug-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-doc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-firmware");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-headers");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:perf");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:python-perf");
script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:6");
script_set_attribute(attribute:"vuln_publication_date", value:"2017/04/18");
script_set_attribute(attribute:"patch_publication_date", value:"2018/05/09");
script_set_attribute(attribute:"plugin_publication_date", value:"2018/05/10");
script_set_attribute(attribute:"in_the_news", value:"true");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"CentOS Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/rpm-list");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/CentOS/release");
if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
os_ver = os_ver[1];
if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 6.x", "CentOS " + os_ver);
if (!get_kb_item("Host/CentOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "CentOS", cpu);
flag = 0;
if (rpm_check(release:"CentOS-6", reference:"kernel-2.6.32-696.28.1.el6")) flag++;
if (rpm_check(release:"CentOS-6", reference:"kernel-abi-whitelists-2.6.32-696.28.1.el6")) flag++;
if (rpm_check(release:"CentOS-6", reference:"kernel-debug-2.6.32-696.28.1.el6")) flag++;
if (rpm_check(release:"CentOS-6", reference:"kernel-debug-devel-2.6.32-696.28.1.el6")) flag++;
if (rpm_check(release:"CentOS-6", reference:"kernel-devel-2.6.32-696.28.1.el6")) flag++;
if (rpm_check(release:"CentOS-6", reference:"kernel-doc-2.6.32-696.28.1.el6")) flag++;
if (rpm_check(release:"CentOS-6", reference:"kernel-firmware-2.6.32-696.28.1.el6")) flag++;
if (rpm_check(release:"CentOS-6", reference:"kernel-headers-2.6.32-696.28.1.el6")) flag++;
if (rpm_check(release:"CentOS-6", reference:"perf-2.6.32-696.28.1.el6")) flag++;
if (rpm_check(release:"CentOS-6", reference:"python-perf-2.6.32-696.28.1.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 / kernel-debug-devel / etc");
}
Vendor | Product | Version | CPE |
---|---|---|---|
centos | centos | kernel-headers | p-cpe:/a:centos:centos:kernel-headers |
centos | centos | 6 | cpe:/o:centos:centos:6 |
centos | centos | kernel-debug | p-cpe:/a:centos:centos:kernel-debug |
centos | centos | kernel-abi-whitelists | p-cpe:/a:centos:centos:kernel-abi-whitelists |
centos | centos | kernel-firmware | p-cpe:/a:centos:centos:kernel-firmware |
centos | centos | perf | p-cpe:/a:centos:centos:perf |
centos | centos | python-perf | p-cpe:/a:centos:centos:python-perf |
centos | centos | kernel | p-cpe:/a:centos:centos:kernel |
centos | centos | kernel-doc | p-cpe:/a:centos:centos:kernel-doc |
centos | centos | kernel-debug-devel | p-cpe:/a:centos:centos:kernel-debug-devel |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-1000410
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-13166
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18017
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5754
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7645
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8824
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8897
www.nessus.org/u?a9e9484b
10 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.974 High
EPSS
Percentile
99.9%