The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2020:4751 advisory.
httpd: mod_http2: DoS via slow, unneeded request bodies (CVE-2018-17189)
httpd: mod_http2: read-after-free on a string compare (CVE-2019-0196)
httpd: mod_http2: possible crash on late upgrade (CVE-2019-0197)
httpd: memory corruption on early pushes (CVE-2019-10081)
httpd: read-after-free in h2 connection shutdown (CVE-2019-10082)
httpd: limited cross-site scripting in mod_proxy error page (CVE-2019-10092)
httpd: null-pointer dereference in mod_remoteip (CVE-2019-10097)
httpd: mod_rewrite potential open redirect (CVE-2019-10098)
httpd: mod_rewrite configurations vulnerable to open redirect (CVE-2020-1927)
httpd: mod_proxy_ftp use of uninitialized value (CVE-2020-1934)
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 package checks in this plugin were extracted from
# Red Hat Security Advisory RHSA-2020:4751. The text
# itself is copyright (C) Red Hat, Inc.
##
include('compat.inc');
if (description)
{
script_id(145821);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/02/08");
script_cve_id(
"CVE-2018-17189",
"CVE-2019-0196",
"CVE-2019-0197",
"CVE-2019-10081",
"CVE-2019-10082",
"CVE-2019-10092",
"CVE-2019-10097",
"CVE-2019-10098",
"CVE-2020-1927",
"CVE-2020-1934"
);
script_bugtraq_id(106685, 107665, 107669);
script_xref(name:"RHSA", value:"2020:4751");
script_xref(name:"CEA-ID", value:"CEA-2021-0025");
script_xref(name:"CEA-ID", value:"CEA-2019-0203");
script_name(english:"CentOS 8 : httpd:2.4 (CESA-2020:4751)");
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-2020:4751 advisory.
- httpd: mod_http2: DoS via slow, unneeded request bodies (CVE-2018-17189)
- httpd: mod_http2: read-after-free on a string compare (CVE-2019-0196)
- httpd: mod_http2: possible crash on late upgrade (CVE-2019-0197)
- httpd: memory corruption on early pushes (CVE-2019-10081)
- httpd: read-after-free in h2 connection shutdown (CVE-2019-10082)
- httpd: limited cross-site scripting in mod_proxy error page (CVE-2019-10092)
- httpd: null-pointer dereference in mod_remoteip (CVE-2019-10097)
- httpd: mod_rewrite potential open redirect (CVE-2019-10098)
- httpd: mod_rewrite configurations vulnerable to open redirect (CVE-2020-1927)
- httpd: mod_proxy_ftp use of uninitialized value (CVE-2020-1934)
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-2020:4751");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:P");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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-2019-10082");
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:"2019/01/22");
script_set_attribute(attribute:"patch_publication_date", value:"2020/11/04");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/02/01");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:8");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:httpd");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:httpd-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:httpd-filesystem");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:httpd-manual");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:httpd-tools");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:mod_http2");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:mod_ldap");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:mod_md");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:mod_proxy_html");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:mod_session");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:mod_ssl");
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) 2021-2023 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.x', 'CentOS Stream ' + os_ver);
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/httpd');
if (isnull(module_ver)) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module httpd:2.4');
if ('2.4' >!< module_ver) audit(AUDIT_PACKAGE_NOT_AFFECTED, 'Module httpd:' + module_ver);
var appstreams = {
'httpd:2.4': [
{'reference':'httpd-2.4.37-30.module_el8.3.0+561+97fdbbcc', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'httpd-2.4.37-30.module_el8.3.0+561+97fdbbcc', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'httpd-devel-2.4.37-30.module_el8.3.0+561+97fdbbcc', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'httpd-devel-2.4.37-30.module_el8.3.0+561+97fdbbcc', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'httpd-filesystem-2.4.37-30.module_el8.3.0+561+97fdbbcc', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'httpd-filesystem-2.4.37-30.module_el8.3.0+561+97fdbbcc', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'httpd-manual-2.4.37-30.module_el8.3.0+561+97fdbbcc', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'httpd-manual-2.4.37-30.module_el8.3.0+561+97fdbbcc', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'httpd-tools-2.4.37-30.module_el8.3.0+561+97fdbbcc', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'httpd-tools-2.4.37-30.module_el8.3.0+561+97fdbbcc', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'mod_http2-1.15.7-2.module_el8.3.0+477+498bb568', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'mod_http2-1.15.7-2.module_el8.3.0+477+498bb568', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'mod_ldap-2.4.37-30.module_el8.3.0+561+97fdbbcc', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'mod_ldap-2.4.37-30.module_el8.3.0+561+97fdbbcc', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'mod_md-2.0.8-8.module_el8.3.0+452+00a0bbdd', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
{'reference':'mod_md-2.0.8-8.module_el8.3.0+452+00a0bbdd', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
{'reference':'mod_proxy_html-2.4.37-30.module_el8.3.0+561+97fdbbcc', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
{'reference':'mod_proxy_html-2.4.37-30.module_el8.3.0+561+97fdbbcc', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
{'reference':'mod_session-2.4.37-30.module_el8.3.0+561+97fdbbcc', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'mod_session-2.4.37-30.module_el8.3.0+561+97fdbbcc', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'mod_ssl-2.4.37-30.module_el8.3.0+561+97fdbbcc', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
{'reference':'mod_ssl-2.4.37-30.module_el8.3.0+561+97fdbbcc', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'}
]
};
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 httpd:2.4');
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, 'httpd / httpd-devel / httpd-filesystem / httpd-manual / httpd-tools / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
centos | centos | 8 | cpe:/o:centos:centos:8 |
centos | centos | httpd | p-cpe:/a:centos:centos:httpd |
centos | centos | httpd-devel | p-cpe:/a:centos:centos:httpd-devel |
centos | centos | httpd-filesystem | p-cpe:/a:centos:centos:httpd-filesystem |
centos | centos | httpd-manual | p-cpe:/a:centos:centos:httpd-manual |
centos | centos | httpd-tools | p-cpe:/a:centos:centos:httpd-tools |
centos | centos | mod_http2 | p-cpe:/a:centos:centos:mod_http2 |
centos | centos | mod_ldap | p-cpe:/a:centos:centos:mod_ldap |
centos | centos | mod_md | p-cpe:/a:centos:centos:mod_md |
centos | centos | mod_proxy_html | p-cpe:/a:centos:centos:mod_proxy_html |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-17189
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0196
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0197
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-10081
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-10082
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-10092
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-10097
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-10098
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1927
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1934
access.redhat.com/errata/RHSA-2020:4751