RHEL 6 : MRG (RHSA-2015:0989)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2015:0989. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(83410);
  script_version("1.14");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/02/05");

  script_cve_id("CVE-2015-3331");
  script_bugtraq_id(74235);
  script_xref(name:"RHSA", value:"2015:0989");

  script_name(english:"RHEL 6 : MRG (RHSA-2015:0989)");
  script_summary(english:"Checks the rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis",
    value:"The remote Red Hat host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description",
    value:
"Updated kernel-rt packages that fix one security issue, several bugs,
and add various enhancements are now available for Red Hat Enterprise
MRG 2.5.

Red Hat Product Security has rated this update as having Important
security impact. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available from the
CVE link in the References section.

The kernel-rt packages contain the Linux kernel, the core of any Linux
operating system.

* A buffer overflow flaw was found in the way the Linux kernel's Intel
AES-NI instructions optimized version of the RFC4106 GCM mode
decryption functionality handled fragmented packets. A remote attacker
could use this flaw to crash, or potentially escalate their privileges
on, a system over a connection with an active AEC-GCM mode IPSec
security association. (CVE-2015-3331, Important)

This update provides a build of the kernel-rt package for Red Hat
Enterprise MRG 2.5, which is layered on Red Hat Enterprise Linux 6.
The kernel-rt sources have been updated to include fixes for the
following issues :

* Audit subsystem not resolving path name on directory watches

* audit watches do not track correctly after a rename

* auditctl output is changed in RHEL 7

* megaraid_sas: non-booting system with intel_iommu=on kernel
parameter

* GFS2: kernel NULL pointer dereference in gfs2_inplace_reserve

* Crypto adapter cannot be brought online - affect all HW

* crypto/seqiv.c: wrong check of return code from crypto_rng_get_bytes

* Backport crypto: sha256_ssse3 - also test for BMI2

* NULL pointer at team_handle_frame+0x62/0x100 [team]

* AES CTR x86_64 'by8' AVX optimization

* Intel RDSEED - Fix for entropy counting

* Intel SHA1 multi-buffer crypto implementation

* Intel SHA1 AVX2 optimization support

* mlx4_en: HW timestamp ends up in error queue of socket which does
not have SO_TIMESTAMPING enabled

(BZ#1213945)

All kernel-rt users are advised to upgrade to these updated packages,
which correct these issues and add these enhancements. The system must
be rebooted for this update to take effect."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2015:0989"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2015-3331"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:ND/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-debuginfo-common-x86_64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-firmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-vanilla");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-vanilla-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-vanilla-devel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/05/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/05/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/05/13");
  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:"Red Hat Local Security Checks");

  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([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 6.x", "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-2015-3331");
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for RHSA-2015:0989");
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2015:0989";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      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_exists(release:"RHEL6", rpm:"mrg-release"))) audit(AUDIT_PACKAGE_NOT_INSTALLED, "MRG");

  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"kernel-rt-3.10.0-229.rt56.151.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"kernel-rt-debug-3.10.0-229.rt56.151.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"kernel-rt-debug-debuginfo-3.10.0-229.rt56.151.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"kernel-rt-debug-devel-3.10.0-229.rt56.151.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"kernel-rt-debuginfo-3.10.0-229.rt56.151.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"kernel-rt-debuginfo-common-x86_64-3.10.0-229.rt56.151.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"kernel-rt-devel-3.10.0-229.rt56.151.el6")) flag++;
  if (rpm_check(release:"RHEL6", reference:"kernel-rt-doc-3.10.0-229.rt56.151.el6")) flag++;
  if (rpm_check(release:"RHEL6", reference:"kernel-rt-firmware-3.10.0-229.rt56.151.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"kernel-rt-trace-3.10.0-229.rt56.151.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"kernel-rt-trace-debuginfo-3.10.0-229.rt56.151.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"kernel-rt-trace-devel-3.10.0-229.rt56.151.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"kernel-rt-vanilla-3.10.0-229.rt56.151.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"kernel-rt-vanilla-debuginfo-3.10.0-229.rt56.151.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"kernel-rt-vanilla-devel-3.10.0-229.rt56.151.el6")) flag++;

  if (flag)
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      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-rt / kernel-rt-debug / kernel-rt-debug-debuginfo / etc");
  }
}