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nessusThis script is Copyright (C) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.REDHAT-RHSA-2019-2695.NASL
HistorySep 11, 2019 - 12:00 a.m.

RHEL 6 : kernel (RHSA-2019:2695)

2019-09-1100:00:00
This script is Copyright (C) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
47

CVSS2

2.1

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:L/Au:N/C:P/I:N/A:N

CVSS3

5.6

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

AI Score

7.1

Confidence

High

EPSS

0.001

Percentile

35.1%

An update for kernel is now available for Red Hat Enterprise Linux 6.5 Advanced Update Support.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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) :

  • kernel: hw: Spectre SWAPGS gadget vulnerability (CVE-2019-1125)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es) :

  • fragmented packets timing out (BZ#1741129)

  • Backport TCP follow-up for small buffers (BZ#1741142)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2019:2695. The text 
# itself is copyright (C) Red Hat, Inc.
#

include('compat.inc');

if (description)
{
  script_id(128661);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/30");

  script_cve_id("CVE-2019-1125");
  script_xref(name:"RHSA", value:"2019:2695");

  script_name(english:"RHEL 6 : kernel (RHSA-2019:2695)");

  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 kernel is now available for Red Hat Enterprise Linux 6.5
Advanced Update Support.

Red Hat Product Security has rated this update as having a security
impact of Moderate. 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) :

* kernel: hw: Spectre SWAPGS gadget vulnerability (CVE-2019-1125)

For more details about the security issue(s), including the impact, a
CVSS score, acknowledgments, and other related information, refer to
the CVE page(s) listed in the References section.

Bug Fix(es) :

* fragmented packets timing out (BZ#1741129)

* Backport TCP follow-up for small buffers (BZ#1741142)");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/articles/4329821");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2019:2695");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2019-1125");
  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:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-1125");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/09/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/09/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/09/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-abi-whitelists");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debug-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo-common-x86_64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-firmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:perf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:perf-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:python-perf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:python-perf-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6.5");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Red Hat Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl", "linux_alt_patch_detect.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");
include("ksplice.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\.5([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 6.5", "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 (get_one_kb_item("Host/ksplice/kernel-cves"))
{
  rm_kb_item(name:"Host/uptrack-uname-r");
  cve_list = make_list("CVE-2019-1125");
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for RHSA-2019:2695");
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2019:2695";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_NOTE,
      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", sp:"5", cpu:"x86_64", reference:"kernel-2.6.32-431.96.1.el6")) flag++;
  if (rpm_check(release:"RHEL6", sp:"5", reference:"kernel-abi-whitelists-2.6.32-431.96.1.el6")) flag++;
  if (rpm_check(release:"RHEL6", sp:"5", cpu:"x86_64", reference:"kernel-debug-2.6.32-431.96.1.el6")) flag++;
  if (rpm_check(release:"RHEL6", sp:"5", cpu:"x86_64", reference:"kernel-debug-debuginfo-2.6.32-431.96.1.el6")) flag++;
  if (rpm_check(release:"RHEL6", sp:"5", cpu:"x86_64", reference:"kernel-debug-devel-2.6.32-431.96.1.el6")) flag++;
  if (rpm_check(release:"RHEL6", sp:"5", cpu:"x86_64", reference:"kernel-debuginfo-2.6.32-431.96.1.el6")) flag++;
  if (rpm_check(release:"RHEL6", sp:"5", cpu:"x86_64", reference:"kernel-debuginfo-common-x86_64-2.6.32-431.96.1.el6")) flag++;
  if (rpm_check(release:"RHEL6", sp:"5", cpu:"x86_64", reference:"kernel-devel-2.6.32-431.96.1.el6")) flag++;
  if (rpm_check(release:"RHEL6", sp:"5", reference:"kernel-doc-2.6.32-431.96.1.el6")) flag++;
  if (rpm_check(release:"RHEL6", sp:"5", reference:"kernel-firmware-2.6.32-431.96.1.el6")) flag++;
  if (rpm_check(release:"RHEL6", sp:"5", cpu:"x86_64", reference:"kernel-headers-2.6.32-431.96.1.el6")) flag++;
  if (rpm_check(release:"RHEL6", sp:"5", cpu:"x86_64", reference:"perf-2.6.32-431.96.1.el6")) flag++;
  if (rpm_check(release:"RHEL6", sp:"5", cpu:"x86_64", reference:"perf-debuginfo-2.6.32-431.96.1.el6")) flag++;
  if (rpm_check(release:"RHEL6", sp:"5", cpu:"x86_64", reference:"python-perf-2.6.32-431.96.1.el6")) flag++;
  if (rpm_check(release:"RHEL6", sp:"5", cpu:"x86_64", reference:"python-perf-debuginfo-2.6.32-431.96.1.el6")) flag++;

  if (flag)
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_NOTE,
      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, "kernel / kernel-abi-whitelists / kernel-debug / etc");
  }
}
VendorProductVersionCPE
redhatenterprise_linuxkernel-abi-whitelistsp-cpe:/a:redhat:enterprise_linux:kernel-abi-whitelists
redhatenterprise_linuxpython-perf-debuginfop-cpe:/a:redhat:enterprise_linux:python-perf-debuginfo
redhatenterprise_linuxkernel-headersp-cpe:/a:redhat:enterprise_linux:kernel-headers
redhatenterprise_linuxkernel-firmwarep-cpe:/a:redhat:enterprise_linux:kernel-firmware
redhatenterprise_linuxkernel-develp-cpe:/a:redhat:enterprise_linux:kernel-devel
redhatenterprise_linuxkernel-debug-develp-cpe:/a:redhat:enterprise_linux:kernel-debug-devel
redhatenterprise_linuxkernel-docp-cpe:/a:redhat:enterprise_linux:kernel-doc
redhatenterprise_linuxperf-debuginfop-cpe:/a:redhat:enterprise_linux:perf-debuginfo
redhatenterprise_linuxkernel-debuginfop-cpe:/a:redhat:enterprise_linux:kernel-debuginfo
redhatenterprise_linuxkernel-debuginfo-common-x86_64p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo-common-x86_64
Rows per page:
1-10 of 161

CVSS2

2.1

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:L/Au:N/C:P/I:N/A:N

CVSS3

5.6

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

AI Score

7.1

Confidence

High

EPSS

0.001

Percentile

35.1%