CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
EPSS
Percentile
57.2%
The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2022-5819 advisory.
A memory leak problem was found in the TCP source port generation algorithm in net/ipv4/tcp.c due to the small table perturb size. This flaw may allow an attacker to information leak and may cause a denial of service problem. (CVE-2022-1012)
net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free. (CVE-2022-32250)
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-2022-5819.
##
include('compat.inc');
if (description)
{
script_id(163929);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2022/12/26");
script_cve_id("CVE-2022-1012", "CVE-2022-32250");
script_name(english:"Oracle Linux 8 : kernel (ELSA-2022-5819)");
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 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the
ELSA-2022-5819 advisory.
- A memory leak problem was found in the TCP source port generation algorithm in net/ipv4/tcp.c due to the
small table perturb size. This flaw may allow an attacker to information leak and may cause a denial of
service problem. (CVE-2022-1012)
- net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create
user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to
a use-after-free. (CVE-2022-32250)
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-2022-5819.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:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-32250");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2022-1012");
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:"vuln_publication_date", value:"2022/06/02");
script_set_attribute(attribute:"patch_publication_date", value:"2022/08/08");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/08/09");
script_set_attribute(attribute:"plugin_type", value:"local");
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-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-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_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:8");
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 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:"^8([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Oracle Linux 8', 'Oracle Linux ' + os_ver);
if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && '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 = ['4.18.0-372.19.1.0.1.el8_6'];
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-2022-5819');
}
}
__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 = '4.18';
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-4.18.0-372.19.1.0.1.el8_6', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'bpftool-4.18.0-372.19.1.0.1.el8_6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-4.18.0-372.19.1.0.1.el8_6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-4.18.0'},
{'reference':'kernel-abi-stablelists-4.18.0-372.19.1.0.1.el8_6', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-abi-stablelists-4.18.0'},
{'reference':'kernel-core-4.18.0-372.19.1.0.1.el8_6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-core-4.18.0'},
{'reference':'kernel-cross-headers-4.18.0-372.19.1.0.1.el8_6', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-cross-headers-4.18.0'},
{'reference':'kernel-cross-headers-4.18.0-372.19.1.0.1.el8_6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-cross-headers-4.18.0'},
{'reference':'kernel-debug-4.18.0-372.19.1.0.1.el8_6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-4.18.0'},
{'reference':'kernel-debug-core-4.18.0-372.19.1.0.1.el8_6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-core-4.18.0'},
{'reference':'kernel-debug-devel-4.18.0-372.19.1.0.1.el8_6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-devel-4.18.0'},
{'reference':'kernel-debug-modules-4.18.0-372.19.1.0.1.el8_6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-modules-4.18.0'},
{'reference':'kernel-debug-modules-extra-4.18.0-372.19.1.0.1.el8_6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-modules-extra-4.18.0'},
{'reference':'kernel-devel-4.18.0-372.19.1.0.1.el8_6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-devel-4.18.0'},
{'reference':'kernel-headers-4.18.0-372.19.1.0.1.el8_6', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-headers-4.18.0'},
{'reference':'kernel-headers-4.18.0-372.19.1.0.1.el8_6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-headers-4.18.0'},
{'reference':'kernel-modules-4.18.0-372.19.1.0.1.el8_6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-modules-4.18.0'},
{'reference':'kernel-modules-extra-4.18.0-372.19.1.0.1.el8_6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-modules-extra-4.18.0'},
{'reference':'kernel-tools-4.18.0-372.19.1.0.1.el8_6', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-tools-4.18.0'},
{'reference':'kernel-tools-4.18.0-372.19.1.0.1.el8_6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-tools-4.18.0'},
{'reference':'kernel-tools-libs-4.18.0-372.19.1.0.1.el8_6', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-tools-libs-4.18.0'},
{'reference':'kernel-tools-libs-4.18.0-372.19.1.0.1.el8_6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-tools-libs-4.18.0'},
{'reference':'kernel-tools-libs-devel-4.18.0-372.19.1.0.1.el8_6', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-tools-libs-devel-4.18.0'},
{'reference':'kernel-tools-libs-devel-4.18.0-372.19.1.0.1.el8_6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-tools-libs-devel-4.18.0'},
{'reference':'perf-4.18.0-372.19.1.0.1.el8_6', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'perf-4.18.0-372.19.1.0.1.el8_6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'python3-perf-4.18.0-372.19.1.0.1.el8_6', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'python3-perf-4.18.0-372.19.1.0.1.el8_6', 'cpu':'x86_64', 'release':'8', '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_HOLE,
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');
}
Vendor | Product | Version | CPE |
---|---|---|---|
oracle | linux | kernel-tools-libs-devel | p-cpe:/a:oracle:linux:kernel-tools-libs-devel |
oracle | linux | kernel-devel | p-cpe:/a:oracle:linux:kernel-devel |
oracle | linux | kernel-cross-headers | p-cpe:/a:oracle:linux:kernel-cross-headers |
oracle | linux | kernel-debug-modules | p-cpe:/a:oracle:linux:kernel-debug-modules |
oracle | linux | 8 | cpe:/o:oracle:linux:8 |
oracle | linux | kernel-tools | p-cpe:/a:oracle:linux:kernel-tools |
oracle | linux | kernel-debug-devel | p-cpe:/a:oracle:linux:kernel-debug-devel |
oracle | linux | kernel-headers | p-cpe:/a:oracle:linux:kernel-headers |
oracle | linux | kernel-modules | p-cpe:/a:oracle:linux:kernel-modules |
oracle | linux | kernel-abi-stablelists | p-cpe:/a:oracle:linux:kernel-abi-stablelists |
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
EPSS
Percentile
57.2%