CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
80.4%
The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-2375 advisory.
A flaw was found in postgresql in versions before 13.3, before 12.7, before 11.12, before 10.17 and before 9.6.22. While modifying certain SQL array values, missing bounds checks let authenticated database users write arbitrary bytes to a wide area of server memory. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-32027)
Memory disclosure in INSERT … ON CONFLICT … DO UPDATEmore details (CVE-2021-32028)
Memory disclosure in partitioned-table UPDATE … RETURNINGmore details (CVE-2021-32029)
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2021-2375.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(150724);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/08/19");
script_cve_id("CVE-2021-32027", "CVE-2021-32028", "CVE-2021-32029");
script_xref(name:"IAVB", value:"2021-B-0036-S");
script_name(english:"Oracle Linux 8 : postgresql:13 (ELSA-2021-2375)");
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-2021-2375 advisory.
- A flaw was found in postgresql in versions before 13.3, before 12.7, before 11.12, before 10.17 and before
9.6.22. While modifying certain SQL array values, missing bounds checks let authenticated database users
write arbitrary bytes to a wide area of server memory. The highest threat from this vulnerability is to
data confidentiality and integrity as well as system availability. (CVE-2021-32027)
- Memory disclosure in INSERT ... ON CONFLICT ... DO UPDATEmore details (CVE-2021-32028)
- Memory disclosure in partitioned-table UPDATE ... RETURNINGmore details (CVE-2021-32029)
Note that Nessus has not tested for this issue 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-2021-2375.html");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-32027");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"vuln_publication_date", value:"2021/05/13");
script_set_attribute(attribute:"patch_publication_date", value:"2021/06/11");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/06/11");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:8");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:pgaudit");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgres-decoderbufs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-contrib");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-docs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-plperl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-plpython3");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-pltcl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-server");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-server-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-static");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-test");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-test-rpm-macros");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-upgrade");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:postgresql-upgrade-devel");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Oracle Linux Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/local_checks_enabled");
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) || !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:"^8([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Oracle Linux 8', 'Oracle Linux ' + os_ver);
if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Oracle Linux', cpu);
module_ver = get_kb_item('Host/RedHat/appstream/postgresql');
if (isnull(module_ver)) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module postgresql:13');
if ('13' >!< module_ver) audit(AUDIT_PACKAGE_NOT_AFFECTED, 'Module postgresql:' + module_ver);
appstreams = {
'postgresql:13': [
{'reference':'pgaudit-1.5.0-1.module+el8.4.0+20016+06fd4df3', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'pgaudit-1.5.0-1.module+el8.4.0+20016+06fd4df3', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgres-decoderbufs-0.10.0-2.module+el8.4.0+20016+06fd4df3', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgres-decoderbufs-0.10.0-2.module+el8.4.0+20016+06fd4df3', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-contrib-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-contrib-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-docs-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-docs-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-plperl-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-plperl-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-plpython3-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-plpython3-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-pltcl-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-pltcl-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-server-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-server-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-server-devel-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-server-devel-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-static-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-static-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-test-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-test-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-test-rpm-macros-13.3-1.module+el8.4.0+20192+096f5771', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-upgrade-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-upgrade-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-upgrade-devel-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'postgresql-upgrade-devel-13.3-1.module+el8.4.0+20192+096f5771', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
]
};
flag = 0;
appstreams_found = 0;
foreach module (keys(appstreams)) {
appstream = NULL;
appstream_name = NULL;
appstream_version = NULL;
appstream_split = split(module, sep:':', keep:FALSE);
if (!empty_or_null(appstream_split)) {
appstream_name = appstream_split[0];
appstream_version = appstream_split[1];
if (!empty_or_null(appstream_name)) appstream = get_one_kb_item('Host/RedHat/appstream/' + appstream_name);
}
if (!empty_or_null(appstream) && appstream_version == appstream || appstream_name == 'all') {
appstreams_found++;
foreach package_array ( appstreams[module] ) {
reference = NULL;
release = NULL;
sp = NULL;
cpu = NULL;
el_string = NULL;
rpm_spec_vers_cmp = NULL;
epoch = NULL;
allowmaj = 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 (reference && release) {
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 (!appstreams_found) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module postgresql:13');
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : rpm_report_get()
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'pgaudit / postgres-decoderbufs / postgresql / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
oracle | linux | 8 | cpe:/o:oracle:linux:8 |
oracle | linux | pgaudit | p-cpe:/a:oracle:linux:pgaudit |
oracle | linux | postgres-decoderbufs | p-cpe:/a:oracle:linux:postgres-decoderbufs |
oracle | linux | postgresql | p-cpe:/a:oracle:linux:postgresql |
oracle | linux | postgresql-contrib | p-cpe:/a:oracle:linux:postgresql-contrib |
oracle | linux | postgresql-docs | p-cpe:/a:oracle:linux:postgresql-docs |
oracle | linux | postgresql-plperl | p-cpe:/a:oracle:linux:postgresql-plperl |
oracle | linux | postgresql-plpython3 | p-cpe:/a:oracle:linux:postgresql-plpython3 |
oracle | linux | postgresql-pltcl | p-cpe:/a:oracle:linux:postgresql-pltcl |
oracle | linux | postgresql-server | p-cpe:/a:oracle:linux:postgresql-server |
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
80.4%