Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2020-5691)

2020-05-20T00:00:00
ID ORACLELINUX_ELSA-2020-5691.NASL
Type nessus
Reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-05-20T00:00:00

Description

Description of changes:

Description of changes: [5.4.17-2011.2.2.el8uek] - scsi: qla2xxx: Move free of fcport out of interrupt context (Joe Carnuccio) [Orabug: 31225231] - xfs: move inode flush to the sync workqueue (Darrick J. Wong) [Orabug: 31132665] - arm64: Kconfig: Enable NODES_SPAN_OTHER_NODES config for NUMA (Hoan Tran) [Orabug: 31049202] - scsi: bnx2fc: timeout calculation invalid for bnx2fc_eh_abort() (Laurence Oberman) [Orabug: 31207643] - jbd2: disable CONFIG_JBD2_DEBUG (Junxiao Bi) [Orabug: 31264694] [5.4.17-2011.2.1.el8uek] - x86/mce: Restart the system when LMCE UE error occurs (Thomas Tai) [Orabug: 31218859] - media: xirlink_cit: add missing descriptor sanity checks (Johan Hovold) [Orabug: 31213764] {CVE-2020-11668} - media: ov519: add missing endpoint sanity checks (Johan Hovold) [Orabug: 31213755] {CVE-2020-11608} - x86/microcode/AMD: Increase microcode PATCH_MAX_SIZE (John Allen) [Orabug: 31213533] - media: stv06xx: add missing descriptor sanity checks (Johan Hovold) [Orabug: 31200576] {CVE-2020-11609} - rds: Fix use-after-free in rds_ib_free_caches (Hans Westgaard Ry) [Orabug: 31200768] - net/rds: Fix MR reference counting problem (Ka-Cheong Poon) [Orabug: 31130194] - net/rds: Replace struct rds_mr

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2020-5691.
#

include("compat.inc");

if (description)
{
  script_id(136727);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/26");

  script_cve_id("CVE-2020-11608", "CVE-2020-11609", "CVE-2020-11668", "CVE-2020-8647", "CVE-2020-8649", "CVE-2020-9391");

  script_name(english:"Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2020-5691)");
  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:

Description of changes: [5.4.17-2011.2.2.el8uek] - scsi: qla2xxx: Move 
free of fcport out of interrupt context (Joe Carnuccio) [Orabug: 
31225231] - xfs: move inode flush to the sync workqueue (Darrick J. 
Wong) [Orabug: 31132665] - arm64: Kconfig: Enable NODES_SPAN_OTHER_NODES 
config for NUMA (Hoan Tran) [Orabug: 31049202] - scsi: bnx2fc: timeout 
calculation invalid for bnx2fc_eh_abort() (Laurence Oberman) [Orabug: 
31207643] - jbd2: disable CONFIG_JBD2_DEBUG (Junxiao Bi) [Orabug: 
31264694] [5.4.17-2011.2.1.el8uek] - x86/mce: Restart the system when 
LMCE UE error occurs (Thomas Tai) [Orabug: 31218859] - media: 
xirlink_cit: add missing descriptor sanity checks (Johan Hovold) 
[Orabug: 31213764] {CVE-2020-11668} - media: ov519: add missing endpoint 
sanity checks (Johan Hovold) [Orabug: 31213755] {CVE-2020-11608} - 
x86/microcode/AMD: Increase microcode PATCH_MAX_SIZE (John Allen) 
[Orabug: 31213533] - media: stv06xx: add missing descriptor sanity 
checks (Johan Hovold) [Orabug: 31200576] {CVE-2020-11609} - rds: Fix 
use-after-free in rds_ib_free_caches (Hans Westgaard Ry) [Orabug: 
31200768] - net/rds: Fix MR reference counting problem (Ka-Cheong Poon) 
[Orabug: 31130194] - net/rds: Replace struct rds_mr's r_refcount with 
struct kref (Ka-Cheong Poon) [Orabug: 31130194] - ctf: discard CTF from 
the vDSO (Nick Alcock) [Orabug: 31194036] [5.4.17-2011.2.0.el8uek] - 
RDMA/rxe: Enhance Soft Roce to support Oracle proprietary shared PD 
extension (Rao Shoaib) [Orabug: 31094525] - mm: Avoid creating virtual 
address aliases in brk()/mmap()/mremap() (Catalin Marinas) [Orabug: 
31053313] {CVE-2020-9391} - rds: Add debugfs for inc/frag cache 
statistics (Hans Westgaard Ry) [Orabug: 31137997] - rds: Add inc/frag 
cache statistics (Hans Westgaard Ry) [Orabug: 31137997] - rds: Control 
the CPU (de)allocating fragments (Hans Westgaard Ry) [Orabug: 31137997] 
- rds: Change caching strategy for receive buffers (Hans Westgaard Ry) 
[Orabug: 31137997] - rds: Add lockfree stack routines (Hans Westgaard 
Ry) [Orabug: 31137997] - net_sched: fix an OOB access in cls_tcindex 
(Cong Wang) [Orabug: 30871138] - vgacon: Fix a UAF in 
vgacon_invert_region (Zhang Xiaoxu) [Orabug: 31143943] {CVE-2020-8649} 
{CVE-2020-8647} {CVE-2020-8647} {CVE-2020-8649} {CVE-2020-8647}"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2020-May/009964.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2020-May/009965.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:N/I:P/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  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-tools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:7");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:8");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/02/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/05/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/20");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Oracle Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl", "linux_alt_patch_detect.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");
include("ksplice.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) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, "Oracle Linux");
os_ver = pregmatch(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 (! preg(pattern:"^(7|8)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Oracle Linux 7 / 8", "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);
if ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu);

if (get_one_kb_item("Host/ksplice/kernel-cves"))
{
  rm_kb_item(name:"Host/uptrack-uname-r");
  cve_list = make_list("CVE-2020-11608", "CVE-2020-11609", "CVE-2020-11668", "CVE-2020-8647", "CVE-2020-8649", "CVE-2020-9391");  
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for ELSA-2020-5691");
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

kernel_major_minor = get_kb_item("Host/uname/major_minor");
if (empty_or_null(kernel_major_minor)) exit(1, "Unable to determine kernel major-minor level.");
expected_kernel_major_minor = "5.4";
if (kernel_major_minor != expected_kernel_major_minor)
  audit(AUDIT_OS_NOT, "running kernel level " + expected_kernel_major_minor + ", it is running kernel level " + kernel_major_minor);

flag = 0;
if (rpm_exists(release:"EL7", rpm:"kernel-uek-5.4.17") && rpm_check(release:"EL7", cpu:"x86_64", reference:"kernel-uek-5.4.17-2011.2.2.el7uek")) flag++;
if (rpm_exists(release:"EL7", rpm:"kernel-uek-debug-5.4.17") && rpm_check(release:"EL7", cpu:"x86_64", reference:"kernel-uek-debug-5.4.17-2011.2.2.el7uek")) flag++;
if (rpm_exists(release:"EL7", rpm:"kernel-uek-debug-devel-5.4.17") && rpm_check(release:"EL7", cpu:"x86_64", reference:"kernel-uek-debug-devel-5.4.17-2011.2.2.el7uek")) flag++;
if (rpm_exists(release:"EL7", rpm:"kernel-uek-devel-5.4.17") && rpm_check(release:"EL7", cpu:"x86_64", reference:"kernel-uek-devel-5.4.17-2011.2.2.el7uek")) flag++;
if (rpm_exists(release:"EL7", rpm:"kernel-uek-doc-5.4.17") && rpm_check(release:"EL7", cpu:"x86_64", reference:"kernel-uek-doc-5.4.17-2011.2.2.el7uek")) flag++;
if (rpm_exists(release:"EL7", rpm:"kernel-uek-tools-5.4.17") && rpm_check(release:"EL7", cpu:"x86_64", reference:"kernel-uek-tools-5.4.17-2011.2.2.el7uek")) flag++;

if (rpm_exists(release:"EL8", rpm:"kernel-uek-5.4.17") && rpm_check(release:"EL8", cpu:"x86_64", reference:"kernel-uek-5.4.17-2011.2.2.el8uek")) flag++;
if (rpm_exists(release:"EL8", rpm:"kernel-uek-debug-5.4.17") && rpm_check(release:"EL8", cpu:"x86_64", reference:"kernel-uek-debug-5.4.17-2011.2.2.el8uek")) flag++;
if (rpm_exists(release:"EL8", rpm:"kernel-uek-debug-devel-5.4.17") && rpm_check(release:"EL8", cpu:"x86_64", reference:"kernel-uek-debug-devel-5.4.17-2011.2.2.el8uek")) flag++;
if (rpm_exists(release:"EL8", rpm:"kernel-uek-devel-5.4.17") && rpm_check(release:"EL8", cpu:"x86_64", reference:"kernel-uek-devel-5.4.17-2011.2.2.el8uek")) flag++;
if (rpm_exists(release:"EL8", rpm:"kernel-uek-doc-5.4.17") && rpm_check(release:"EL8", cpu:"x86_64", reference:"kernel-uek-doc-5.4.17-2011.2.2.el8uek")) flag++;


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