CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
Percentile
99.3%
The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2022:6542 advisory.
Archive_Tar: allows an unserialization attack because phar: is blocked but PHAR: is not blocked (CVE-2020-28948)
Archive_Tar: improper filename sanitization leads to file overwrites (CVE-2020-28949)
Archive_Tar: directory traversal due to inadequate checking of symbolic links (CVE-2020-36193)
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# Red Hat Security Advisory RHSA-2022:6542. The text
# itself is copyright (C) Red Hat, Inc.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(165202);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/02/08");
script_cve_id("CVE-2020-28948", "CVE-2020-28949", "CVE-2020-36193");
script_xref(name:"RHSA", value:"2022:6542");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/09/15");
script_name(english:"CentOS 8 : php:7.4 (CESA-2022:6542)");
script_set_attribute(attribute:"synopsis", value:
"The remote CentOS host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the
CESA-2022:6542 advisory.
- Archive_Tar: allows an unserialization attack because phar: is blocked but PHAR: is not blocked
(CVE-2020-28948)
- Archive_Tar: improper filename sanitization leads to file overwrites (CVE-2020-28949)
- Archive_Tar: directory traversal due to inadequate checking of symbolic links (CVE-2020-36193)
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://access.redhat.com/errata/RHSA-2022:6542");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/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-2020-28949");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"metasploit_name", value:'PEAR Archive_Tar 1.4.10 Arbitrary File Write');
script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/11/19");
script_set_attribute(attribute:"patch_publication_date", value:"2022/09/15");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/09/15");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:8-stream");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:apcu-panel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libzip");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libzip-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libzip-tools");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-pear");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-pecl-apcu");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-pecl-apcu-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-pecl-rrd");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-pecl-xdebug");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-pecl-zip");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"CentOS 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("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/rpm-list", "Host/cpu");
exit(0);
}
include('rpm.inc');
include('rhel.inc');
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/CentOS/release');
if (isnull(os_release) || 'CentOS' >!< os_release) audit(AUDIT_OS_NOT, 'CentOS');
var os_ver = pregmatch(pattern: "CentOS(?: Stream)?(?: Linux)? release ([0-9]+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'CentOS');
os_ver = os_ver[1];
if ('CentOS Stream' >!< os_release) audit(AUDIT_OS_NOT, 'CentOS 8-Stream');
if (!rhel_check_release(operator: 'ge', os_version: os_ver, rhel_version: '8')) audit(AUDIT_OS_NOT, 'CentOS 8.x', 'CentOS ' + os_ver);
if (!get_kb_item('Host/CentOS/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$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'CentOS', cpu);
var module_ver = get_kb_item('Host/RedHat/appstream/php');
if (isnull(module_ver)) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module php:7.4');
if ('7.4' >!< module_ver) audit(AUDIT_PACKAGE_NOT_AFFECTED, 'Module php:' + module_ver);
var appstreams = {
'php:7.4': [
{'reference':'apcu-panel-5.1.18-1.module_el8.3.0+396+9a0d79d6', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'apcu-panel-5.1.18-1.module_el8.3.0+396+9a0d79d6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libzip-1.6.1-1.module_el8.3.0+396+9a0d79d6', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libzip-1.6.1-1.module_el8.3.0+396+9a0d79d6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libzip-devel-1.6.1-1.module_el8.3.0+396+9a0d79d6', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libzip-devel-1.6.1-1.module_el8.3.0+396+9a0d79d6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libzip-tools-1.6.1-1.module_el8.3.0+396+9a0d79d6', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libzip-tools-1.6.1-1.module_el8.3.0+396+9a0d79d6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'php-pear-1.10.13-1.module_el8.6.0+1066+63503082', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'php-pear-1.10.13-1.module_el8.6.0+1066+63503082', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'php-pecl-apcu-5.1.18-1.module_el8.3.0+396+9a0d79d6', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'php-pecl-apcu-5.1.18-1.module_el8.3.0+396+9a0d79d6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'php-pecl-apcu-devel-5.1.18-1.module_el8.3.0+396+9a0d79d6', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'php-pecl-apcu-devel-5.1.18-1.module_el8.3.0+396+9a0d79d6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'php-pecl-rrd-2.0.1-1.module_el8.3.0+396+9a0d79d6', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'php-pecl-rrd-2.0.1-1.module_el8.3.0+396+9a0d79d6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'php-pecl-xdebug-2.9.5-1.module_el8.3.0+396+9a0d79d6', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'php-pecl-xdebug-2.9.5-1.module_el8.3.0+396+9a0d79d6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'php-pecl-zip-1.18.2-1.module_el8.3.0+396+9a0d79d6', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'php-pecl-zip-1.18.2-1.module_el8.3.0+396+9a0d79d6', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
]
};
var flag = 0;
appstreams_found = 0;
foreach module (keys(appstreams)) {
var appstream = NULL;
var appstream_name = NULL;
var appstream_version = NULL;
var 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] ) {
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;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) _release = 'CentOS-' + 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 php:7.4');
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, 'apcu-panel / libzip / libzip-devel / libzip-tools / php-pear / etc');
}
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
Percentile
99.3%