Oracle Linux 6 : Unbreakable Enterprise kernel (ELSA-2018-4041)

2018-02-28T00:00:00
ID ORACLELINUX_ELSA-2018-4041.NASL
Type nessus
Reporter Tenable
Modified 2018-02-28T00:00:00

Description

Description of changes:

[2.6.39-400.298.3.el6uek] - ext4: limit group search loop for non-extent files (Lachlan McIlroy) [Orabug: 17488415] - ext4: fixup 64-bit divides in 3.0-stable backport of upstream fix (Todd Poynor) [Orabug: 17488415] - ext4: use atomic64_t for the per-flexbg free_clusters count (Theodore Ts'o) [Orabug: 17488415] - ext4: init pagevec in ext4_da_block_invalidatepages (Eric Sandeen) [Orabug: 17488415] - ext4: do not try to write superblock on ro remount w/o journal (Michael Tokarev) [Orabug: 17488415] - xen-netback: fix grant_copy_op array size (Niranjan Patil) [Orabug: 25653941] - xen-netback: explicitly check max_slots_needed against meta_prod counter (Niranjan Patil) [Orabug: 25653941] - xen-netback: Fix handling of skbs requiring too many slots (Zoltan Kiss) [Orabug: 25653941] - xen-netback: worse-case estimate in xenvif_rx_action is underestimating (Paul Durrant) [Orabug: 25653941] - xen-netback: Add worse-case estimates of max_slots_needed in netbk_rx_action (Niranjan Patil) [Orabug: 25653941] - KEYS: Remove key_type::match in favour of overriding default by match_preparse (Tim Tianyang Chen) [Orabug: 25757946] {CVE-2017-6951} - xen/mmu: Call xen_cleanhighmap() with 4MB aligned for page tables mapping (Zhenzhong Duan) [Orabug: 26737475] - tcp: initialize rcv_mss to TCP_MIN_MSS instead of 0 (Wei Wang) [Orabug: 26813391] {CVE-2017-14106} - rxrpc: Fix several cases where a padded len isn't checked in ticket decode (David Howells) [Orabug: 26880520] {CVE-2017-7482} {CVE-2017-7482} - ocfs2: fstrim: Fix start offset of first cluster group during fstrim (Ashish Samant) [Orabug: 27099836] - Check validity of cl_rpcclient in nfs_server_list_show (Malahal Naineni) [Orabug: 27112186] - USB: serial: console: fix use-after-free after failed setup (Johan Hovold) [Orabug: 27206839] {CVE-2017-16525} - ALSA: usb-audio: Check out-of-bounds access by corrupted buffer descriptor (Takashi Iwai) [Orabug: 27206934] {CVE-2017-16529} - USB: fix out-of-bounds in usb_set_configuration (Greg Kroah-Hartman) [Orabug: 27207243] {CVE-2017-16531} - dccp: CVE-2017-8824: use-after-free in DCCP code (Mohamed Ghannam) [Orabug: 27290308] {CVE-2017-8824}

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2018-4041.
#

include("compat.inc");

if (description)
{
  script_id(107052);
  script_version("$Revision: 3.1 $");
  script_cvs_date("$Date: 2018/02/28 14:56:50 $");

  script_cve_id("CVE-2017-14106", "CVE-2017-16525", "CVE-2017-16529", "CVE-2017-16531", "CVE-2017-6951", "CVE-2017-7482", "CVE-2017-8824");

  script_name(english:"Oracle Linux 6 : Unbreakable Enterprise kernel (ELSA-2018-4041)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Oracle Linux host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Description of changes:

[2.6.39-400.298.3.el6uek]
- ext4: limit group search loop for non-extent files (Lachlan McIlroy) 
[Orabug: 17488415]
- ext4: fixup 64-bit divides in 3.0-stable backport of upstream fix 
(Todd Poynor)  [Orabug: 17488415]
- ext4: use atomic64_t for the per-flexbg free_clusters count (Theodore 
Ts'o)  [Orabug: 17488415]
- ext4: init pagevec in ext4_da_block_invalidatepages (Eric Sandeen) 
[Orabug: 17488415]
- ext4: do not try to write superblock on ro remount w/o journal 
(Michael Tokarev)  [Orabug: 17488415]
- xen-netback: fix grant_copy_op array size (Niranjan Patil)  [Orabug: 
25653941]
- xen-netback: explicitly check max_slots_needed against meta_prod 
counter (Niranjan Patil)  [Orabug: 25653941]
- xen-netback: Fix handling of skbs requiring too many slots (Zoltan 
Kiss)  [Orabug: 25653941]
- xen-netback: worse-case estimate in xenvif_rx_action is 
underestimating (Paul Durrant)  [Orabug: 25653941]
- xen-netback: Add worse-case estimates of max_slots_needed in 
netbk_rx_action (Niranjan Patil)  [Orabug: 25653941]
- KEYS: Remove key_type::match in favour of overriding default by 
match_preparse (Tim Tianyang Chen)  [Orabug: 25757946]  {CVE-2017-6951}
- xen/mmu: Call xen_cleanhighmap() with 4MB aligned for page tables 
mapping (Zhenzhong Duan)  [Orabug: 26737475]
- tcp: initialize rcv_mss to TCP_MIN_MSS instead of 0 (Wei Wang) 
[Orabug: 26813391]  {CVE-2017-14106}
- rxrpc: Fix several cases where a padded len isn't checked in ticket 
decode (David Howells)  [Orabug: 26880520]  {CVE-2017-7482} {CVE-2017-7482}
- ocfs2: fstrim: Fix start offset of first cluster group during fstrim 
(Ashish Samant)  [Orabug: 27099836]
- Check validity of cl_rpcclient in nfs_server_list_show (Malahal 
Naineni)  [Orabug: 27112186]
- USB: serial: console: fix use-after-free after failed setup (Johan 
Hovold)  [Orabug: 27206839]  {CVE-2017-16525}
- ALSA: usb-audio: Check out-of-bounds access by corrupted buffer 
descriptor (Takashi Iwai)  [Orabug: 27206934]  {CVE-2017-16529}
- USB: fix out-of-bounds in usb_set_configuration (Greg Kroah-Hartman) 
[Orabug: 27207243]  {CVE-2017-16531}
- dccp: CVE-2017-8824: use-after-free in DCCP code (Mohamed Ghannam) 
[Orabug: 27290308]  {CVE-2017-8824}"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2018-February/007539.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected unbreakable enterprise kernel packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A: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_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:6");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/02/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/02/28");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018 Tenable Network Security, Inc.");
  script_family(english:"Oracle Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/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);
if (!get_kb_item("Host/OracleLinux")) audit(AUDIT_OS_NOT, "Oracle Linux");
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !eregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, "Oracle Linux");
os_ver = eregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Oracle Linux");
os_ver = os_ver[1];
if (! ereg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Oracle Linux 6", "Oracle 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 ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Oracle Linux", cpu);

flag = 0;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-2.6.39") && rpm_check(release:"EL6", reference:"kernel-uek-2.6.39-400.298.3.el6uek")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-debug-2.6.39") && rpm_check(release:"EL6", reference:"kernel-uek-debug-2.6.39-400.298.3.el6uek")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-debug-devel-2.6.39") && rpm_check(release:"EL6", reference:"kernel-uek-debug-devel-2.6.39-400.298.3.el6uek")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-devel-2.6.39") && rpm_check(release:"EL6", reference:"kernel-uek-devel-2.6.39-400.298.3.el6uek")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-doc-2.6.39") && rpm_check(release:"EL6", reference:"kernel-uek-doc-2.6.39-400.298.3.el6uek")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-firmware-2.6.39") && rpm_check(release:"EL6", reference:"kernel-uek-firmware-2.6.39-400.298.3.el6uek")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "affected kernel");
}