RHEL 5 : kernel (RHSA-2015:1190)

2015-06-26T00:00:00
ID REDHAT-RHSA-2015-1190.NASL
Type nessus
Reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-06-02T00:00:00

Description

Updated kernel packages that fix one security issue and one bug are now available for Red Hat Enterprise Linux 5.6 Long Life.

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

  • It was found that the Linux kernel

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2015:1190. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(84422);
  script_version("2.13");
  script_cvs_date("Date: 2019/10/24 15:35:40");

  script_cve_id("CVE-2015-1805");
  script_xref(name:"RHSA", value:"2015:1190");

  script_name(english:"RHEL 5 : kernel (RHSA-2015:1190)");
  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 packages that fix one security issue and one bug are
now available for Red Hat Enterprise Linux 5.6 Long Life.

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

* It was found that the Linux kernel's implementation of vectored pipe
read and write functionality did not take into account the I/O vectors
that were already processed when retrying after a failed atomic access
operation, potentially resulting in memory corruption due to an I/O
vector array overrun. A local, unprivileged user could use this flaw
to crash the system or, potentially, escalate their privileges on the
system. (CVE-2015-1805, Important)

The security impact of this issue was discovered by Red Hat.

This update also fixes the following bug :

* Previously, the signal delivery paths did not clear the TS_USEDFPU
flag, which could cause problems in the switch_to() function and lead
to floating-point unit (FPU) corruption. With this update, TS_USEDFPU
is cleared as expected, and FPU is no longer under threat of
corruption. (BZ#1214237)

All kernel users are advised to upgrade to these updated packages,
which contain backported patches to correct these issues. The system
must be rebooted for this update to take effect."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2015:1190"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2015-1805"
  );
  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:H/RL:OF/RC:C");
  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:"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-PAE");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-PAE-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-PAE-devel");
  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");
  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-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-xen");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-xen-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-xen-devel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:5.6");

  script_set_attribute(attribute:"patch_publication_date", value:"2015/06/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/06/26");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Red Hat Local Security Checks");

  script_dependencies("ssh_get_info.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");

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 = eregmatch(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 (! ereg(pattern:"^5\.6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 5.6", "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);

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2015:1190";
  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_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-PAE-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-PAE-debuginfo-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-PAE-devel-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-debug-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-debug-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-debug-debuginfo-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-debug-debuginfo-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-debug-devel-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-debug-devel-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-debuginfo-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-debuginfo-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-debuginfo-common-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-debuginfo-common-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-devel-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-devel-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", reference:"kernel-doc-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i386", reference:"kernel-headers-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-headers-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-xen-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-xen-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-xen-debuginfo-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-xen-debuginfo-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-xen-devel-2.6.18-238.56.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-xen-devel-2.6.18-238.56.1.el5")) 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 / kernel-PAE / kernel-PAE-debuginfo / kernel-PAE-devel / etc");
  }
}