CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
98.1%
The Apache httpd reports :
moderate: mod_proxy_wstunnel tunneling of non Upgraded connections (CVE-2019-17567)
moderate: Improper Handling of Insufficient Privileges (CVE-2020-13938)
low: mod_proxy_http NULL pointer dereference (CVE-2020-13950)
low: mod_auth_digest possible stack overflow by one nul byte (CVE-2020-35452)
low: mod_session NULL pointer dereference (CVE-2021-26690)
low: mod_session response handling heap overflow (CVE-2021-26691)
moderate: Unexpected URL matching with ‘MergeSlashes OFF’ (CVE-2021-30641)
important: NULL pointer dereference on specially crafted HTTP/2 request (CVE-2021-31618)
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2021 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
# copyright notice, this list of conditions and the following
# disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
# published online in any format, converted to PDF, PostScript,
# RTF and other formats) must reproduce the above copyright
# notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
#
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(151010);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/12/12");
script_cve_id(
"CVE-2019-17567",
"CVE-2020-13938",
"CVE-2020-13950",
"CVE-2020-35452",
"CVE-2021-26690",
"CVE-2021-26691",
"CVE-2021-30641",
"CVE-2021-31618"
);
script_name(english:"FreeBSD : Apache httpd -- Multiple vulnerabilities (cce76eca-ca16-11eb-9b84-d4c9ef517024)");
script_set_attribute(attribute:"synopsis", value:
"The remote FreeBSD host is missing a security-related update.");
script_set_attribute(attribute:"description", value:
"The Apache httpd reports :
- moderate: mod_proxy_wstunnel tunneling of non Upgraded connections
(CVE-2019-17567)
- moderate: Improper Handling of Insufficient Privileges
(CVE-2020-13938)
- low: mod_proxy_http NULL pointer dereference (CVE-2020-13950)
- low: mod_auth_digest possible stack overflow by one nul byte
(CVE-2020-35452)
- low: mod_session NULL pointer dereference (CVE-2021-26690)
- low: mod_session response handling heap overflow (CVE-2021-26691)
- moderate: Unexpected URL matching with 'MergeSlashes OFF'
(CVE-2021-30641)
- important: NULL pointer dereference on specially crafted HTTP/2
request (CVE-2021-31618)");
script_set_attribute(attribute:"see_also", value:"https://httpd.apache.org/security/vulnerabilities_24.html");
# https://vuxml.freebsd.org/freebsd/cce76eca-ca16-11eb-9b84-d4c9ef517024.html
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3cef988a");
script_set_attribute(attribute:"solution", value:
"Update the affected package.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/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:N/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-2021-26691");
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:"2021/06/09");
script_set_attribute(attribute:"patch_publication_date", value:"2021/06/10");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/06/25");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:apache24");
script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"FreeBSD 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/FreeBSD/release", "Host/FreeBSD/pkg_info");
exit(0);
}
include("audit.inc");
include("freebsd_package.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (pkg_test(save_report:TRUE, pkg:"apache24<2.4.48")) flag++;
if (flag)
{
if (report_verbosity > 0) security_hole(port:0, extra:pkg_report_get());
else security_hole(0);
exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-17567
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13938
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13950
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-35452
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26690
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26691
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30641
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31618
www.nessus.org/u?3cef988a
httpd.apache.org/security/vulnerabilities_24.html
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
98.1%