FreeBSD : libssh2 -- multiple issues (6e58e1e9-2636-413e-9f84-4c0e21143628)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2022 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(124182);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/31");

  script_cve_id(
    "CVE-2019-3855",
    "CVE-2019-3856",
    "CVE-2019-3857",
    "CVE-2019-3858",
    "CVE-2019-3859",
    "CVE-2019-3860",
    "CVE-2019-3861",
    "CVE-2019-3862",
    "CVE-2019-3863"
  );

  script_name(english:"FreeBSD : libssh2 -- multiple issues (6e58e1e9-2636-413e-9f84-4c0e21143628)");

  script_set_attribute(attribute:"synopsis", value:
"The remote FreeBSD host is missing one or more security-related
updates.");
  script_set_attribute(attribute:"description", value:
"libssh2 developers report :

- Defend against possible integer overflows in
comp_method_zlib_decomp.

- Defend against writing beyond the end of the payload in
_libssh2_transport_read().

- Sanitize padding_length - _libssh2_transport_read().

- This prevents an underflow resulting in a potential out-of-bounds
read if a server sends a too-large padding_length, possibly with
malicious intent.

- Prevent zero-byte allocation in sftp_packet_read() which could lead
to an out-of-bounds read.

- Check the length of data passed to sftp_packet_add() to prevent
out-of-bounds reads.

- Add a required_size parameter to sftp_packet_require et. al. to
require callers of these functions to handle packets that are too
short.

- Additional length checks to prevent out-of-bounds reads and writes
in _libssh2_packet_add().");
  script_set_attribute(attribute:"see_also", value:"https://github.com/libssh2/libssh2/releases/tag/libssh2-1.8.1");
  script_set_attribute(attribute:"see_also", value:"https://libssh2.org/CVE-2019-3855.html");
  script_set_attribute(attribute:"see_also", value:"https://libssh2.org/CVE-2019-3856.html");
  script_set_attribute(attribute:"see_also", value:"https://libssh2.org/CVE-2019-3857.html");
  script_set_attribute(attribute:"see_also", value:"https://libssh2.org/CVE-2019-3858.html");
  script_set_attribute(attribute:"see_also", value:"https://libssh2.org/CVE-2019-3859.html");
  script_set_attribute(attribute:"see_also", value:"https://libssh2.org/CVE-2019-3860.html");
  script_set_attribute(attribute:"see_also", value:"https://libssh2.org/CVE-2019-3861.html");
  script_set_attribute(attribute:"see_also", value:"https://libssh2.org/CVE-2019-3862.html");
  script_set_attribute(attribute:"see_also", value:"https://libssh2.org/CVE-2019-3863.html");
  # https://vuxml.freebsd.org/freebsd/6e58e1e9-2636-413e-9f84-4c0e21143628.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?842549c3");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  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:N/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-2019-3855");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2019-3862");

  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:"2019/03/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/04/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/04/19");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:libssh2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:linux-c6-libssh2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:linux-c7-libssh2");
  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) 2019-2024 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:"libssh2<1.8.1,3")) flag++;
if (pkg_test(save_report:TRUE, pkg:"linux-c6-libssh2<1.4.2_7")) flag++;
if (pkg_test(save_report:TRUE, pkg:"linux-c7-libssh2<1.4.3_3")) 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");