FreeBSD : cURL -- Multiple vulnerabilities (301a01b7-d50e-11e7-ac58-b499baebfeaf)

2017-11-30T00:00:00
ID FREEBSD_PKG_301A01B7D50E11E7AC58B499BAEBFEAF.NASL
Type nessus
Reporter This script is Copyright (C) 2017-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-04-02T00:00:00

Description

The cURL project reports :

  • NTLM buffer overflow via integer overflow (CVE-2017-8816)libcurl contains a buffer overrun flaw in the NTLM authentication code. The internal function Curl_ntlm_core_mk_ntlmv2_hash sums up the lengths of the user name + password (= SUM) and multiplies the sum by two (= SIZE) to figure out how large storage to allocate from the heap.

  • FTP wildcard out of bounds read (CVE-2017-8817) libcurl contains a read out of bounds flaw in the FTP wildcard function. libcurl

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2018 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("compat.inc");

if (description)
{
  script_id(104863);
  script_version("3.5");
  script_cvs_date("Date: 2018/11/10 11:49:46");

  script_cve_id("CVE-2017-8816", "CVE-2017-8817", "CVE-2017-8818");

  script_name(english:"FreeBSD : cURL -- Multiple vulnerabilities (301a01b7-d50e-11e7-ac58-b499baebfeaf)");
  script_summary(english:"Checks for updated packages in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote FreeBSD host is missing one or more security-related
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The cURL project reports :

- NTLM buffer overflow via integer overflow (CVE-2017-8816)libcurl
contains a buffer overrun flaw in the NTLM authentication code. The
internal function Curl_ntlm_core_mk_ntlmv2_hash sums up the lengths of
the user name + password (= SUM) and multiplies the sum by two (=
SIZE) to figure out how large storage to allocate from the heap.

- FTP wildcard out of bounds read (CVE-2017-8817) libcurl contains a
read out of bounds flaw in the FTP wildcard function. libcurl's FTP
wildcard matching feature, which is enabled with the
CURLOPT_WILDCARDMATCH option can use a built-in wildcard function or a
user provided one. The built-in wildcard function has a flaw that
makes it not detect the end of the pattern string if it ends with an
open bracket ([) but instead it will continue reading the heap beyond
the end of the URL buffer that holds the wildcard.

- SSL out of buffer access (CVE-2017-8818) libcurl contains an out
boundary access flaw in SSL related code. When allocating memory for a
connection (the internal struct called connectdata), a certain amount
of memory is allocated at the end of the struct to be used for SSL
related structs. Those structs are used by the particular SSL library
libcurl is built to use. The application can also tell libcurl which
specific SSL library to use if it was built to support more than one."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://curl.haxx.se/changes.html"
  );
  # https://vuxml.freebsd.org/freebsd/301a01b7-d50e-11e7-ac58-b499baebfeaf.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?b74b79e5"
  );
  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:P/A:P");
  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_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:curl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:linux-c7-curl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/11/29");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/11/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/11/30");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"FreeBSD Local Security Checks");

  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:"curl>=7.21.0<7.57.0")) flag++;
if (pkg_test(save_report:TRUE, pkg:"linux-c7-curl>=7.21.0<7.29.0_4")) 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");