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nessusThis script is Copyright (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.ORACLELINUX_ELSA-2022-6003.NASL
HistoryAug 10, 2022 - 12:00 a.m.

Oracle Linux 9 : kernel (ELSA-2022-6003)

2022-08-1000:00:00
This script is Copyright (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
16

4.9 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

NONE

Availability Impact

NONE

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

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.6 High

CVSS4

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/SC:H/VI:H/SI:H/VA:N/SA:N

0.0004 Low

EPSS

Percentile

5.1%

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2022-6003 advisory.

  • A kernel information leak flaw was identified in the scsi_ioctl function in drivers/scsi/scsi_ioctl.c in the Linux kernel. This flaw allows a local attacker with a special user privilege (CAP_SYS_ADMIN or CAP_SYS_RAWIO) to create issues with confidentiality. (CVE-2022-0494)

  • A use-after-free exists in the Linux Kernel in tc_new_tfilter that could allow a local attacker to gain privilege escalation. The exploit requires unprivileged user namespaces. We recommend upgrading past commit 04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5 (CVE-2022-1055)

Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.

##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2022-6003.
##

include('compat.inc');

if (description)
{
  script_id(164032);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/16");

  script_cve_id("CVE-2022-0494", "CVE-2022-1055");

  script_name(english:"Oracle Linux 9 : kernel (ELSA-2022-6003)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the
ELSA-2022-6003 advisory.

  - A kernel information leak flaw was identified in the scsi_ioctl function in drivers/scsi/scsi_ioctl.c in
    the Linux kernel. This flaw allows a local attacker with a special user privilege (CAP_SYS_ADMIN or
    CAP_SYS_RAWIO) to create issues with confidentiality. (CVE-2022-0494)

  - A use-after-free exists in the Linux Kernel in tc_new_tfilter that could allow a local attacker to gain
    privilege escalation. The exploit requires unprivileged user namespaces. We recommend upgrading past
    commit 04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5 (CVE-2022-1055)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://linux.oracle.com/errata/ELSA-2022-6003.html");
  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: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:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-0494");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2022-1055");

  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:"2022/03/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/08/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/08/10");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:bpftool");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-abi-stablelists");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-cross-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-debug-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-debug-devel-matched");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-debug-modules");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-debug-modules-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-devel-matched");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-modules");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-modules-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-tools-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-tools-libs-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:perf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:python3-perf");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Oracle Linux Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("linux_alt_patch_detect.nasl", "ssh_get_info.nasl");
  script_require_keys("Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/local_checks_enabled");

  exit(0);
}


include('ksplice.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');
var 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');
var 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');
var os_ver = os_ver[1];
if (! preg(pattern:"^9([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Oracle Linux 9', 'Oracle Linux ' + os_ver);

if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Oracle Linux', cpu);

var machine_uptrack_level = get_one_kb_item('Host/uptrack-uname-r');
if (machine_uptrack_level)
{
  var trimmed_uptrack_level = ereg_replace(string:machine_uptrack_level, pattern:"\.(x86_64|i[3-6]86|aarch64)$", replace:'');
  var fixed_uptrack_levels = ['5.14.0-70.22.1.0.1.el9_0'];
  foreach var fixed_uptrack_level ( fixed_uptrack_levels ) {
    if (rpm_spec_vers_cmp(a:trimmed_uptrack_level, b:fixed_uptrack_level) >= 0)
    {
      audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for ELSA-2022-6003');
    }
  }
  __rpm_report = 'Running KSplice level of ' + trimmed_uptrack_level + ' does not meet the minimum fixed level of ' + join(fixed_uptrack_levels, sep:' / ') + ' for this advisory.\n\n';
}

var 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.');
var expected_kernel_major_minor = '5.14';
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);

var pkgs = [
    {'reference':'bpftool-5.14.0-70.22.1.0.1.el9_0', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'bpftool-5.14.0-70.22.1.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-5.14.0-70.22.1.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-5.14.0'},
    {'reference':'kernel-abi-stablelists-5.14.0-70.22.1.0.1.el9_0', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-abi-stablelists-5.14.0'},
    {'reference':'kernel-core-5.14.0-70.22.1.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-core-5.14.0'},
    {'reference':'kernel-cross-headers-5.14.0-70.22.1.0.1.el9_0', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-cross-headers-5.14.0'},
    {'reference':'kernel-cross-headers-5.14.0-70.22.1.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-cross-headers-5.14.0'},
    {'reference':'kernel-debug-5.14.0-70.22.1.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-5.14.0'},
    {'reference':'kernel-debug-core-5.14.0-70.22.1.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-core-5.14.0'},
    {'reference':'kernel-debug-devel-5.14.0-70.22.1.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-devel-5.14.0'},
    {'reference':'kernel-debug-devel-matched-5.14.0-70.22.1.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-devel-matched-5.14.0'},
    {'reference':'kernel-debug-modules-5.14.0-70.22.1.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-modules-5.14.0'},
    {'reference':'kernel-debug-modules-extra-5.14.0-70.22.1.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-modules-extra-5.14.0'},
    {'reference':'kernel-devel-5.14.0-70.22.1.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-devel-5.14.0'},
    {'reference':'kernel-devel-matched-5.14.0-70.22.1.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-devel-matched-5.14.0'},
    {'reference':'kernel-headers-5.14.0-70.22.1.0.1.el9_0', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-headers-5.14.0'},
    {'reference':'kernel-headers-5.14.0-70.22.1.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-headers-5.14.0'},
    {'reference':'kernel-modules-5.14.0-70.22.1.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-modules-5.14.0'},
    {'reference':'kernel-modules-extra-5.14.0-70.22.1.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-modules-extra-5.14.0'},
    {'reference':'kernel-tools-5.14.0-70.22.1.0.1.el9_0', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-tools-5.14.0'},
    {'reference':'kernel-tools-5.14.0-70.22.1.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-tools-5.14.0'},
    {'reference':'kernel-tools-libs-5.14.0-70.22.1.0.1.el9_0', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-tools-libs-5.14.0'},
    {'reference':'kernel-tools-libs-5.14.0-70.22.1.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-tools-libs-5.14.0'},
    {'reference':'kernel-tools-libs-devel-5.14.0-70.22.1.0.1.el9_0', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-tools-libs-devel-5.14.0'},
    {'reference':'kernel-tools-libs-devel-5.14.0-70.22.1.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-tools-libs-devel-5.14.0'},
    {'reference':'perf-5.14.0-70.22.1.0.1.el9_0', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'perf-5.14.0-70.22.1.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3-perf-5.14.0-70.22.1.0.1.el9_0', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3-perf-5.14.0-70.22.1.0.1.el9_0', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var reference = NULL;
  var release = NULL;
  var sp = NULL;
  var cpu = NULL;
  var el_string = NULL;
  var rpm_spec_vers_cmp = NULL;
  var epoch = NULL;
  var allowmaj = NULL;
  var exists_check = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) release = 'EL' + package_array['release'];
  if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
  if (!empty_or_null(package_array['cpu'])) cpu = package_array['cpu'];
  if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
  if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
  if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (reference && release) {
    if (exists_check) {
        if (rpm_exists(release:release, rpm:exists_check) && rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
    } else {
        if (rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
    }
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'bpftool / kernel / kernel-abi-stablelists / etc');
}
VendorProductVersionCPE
oraclelinux9cpe:/o:oracle:linux:9
oraclelinuxbpftoolp-cpe:/a:oracle:linux:bpftool
oraclelinuxkernelp-cpe:/a:oracle:linux:kernel
oraclelinuxkernel-abi-stablelistsp-cpe:/a:oracle:linux:kernel-abi-stablelists
oraclelinuxkernel-corep-cpe:/a:oracle:linux:kernel-core
oraclelinuxkernel-cross-headersp-cpe:/a:oracle:linux:kernel-cross-headers
oraclelinuxkernel-debugp-cpe:/a:oracle:linux:kernel-debug
oraclelinuxkernel-debug-corep-cpe:/a:oracle:linux:kernel-debug-core
oraclelinuxkernel-debug-develp-cpe:/a:oracle:linux:kernel-debug-devel
oraclelinuxkernel-debug-devel-matchedp-cpe:/a:oracle:linux:kernel-debug-devel-matched
Rows per page:
1-10 of 221

4.9 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

NONE

Availability Impact

NONE

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

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.6 High

CVSS4

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/SC:H/VI:H/SI:H/VA:N/SA:N

0.0004 Low

EPSS

Percentile

5.1%