libtool attempts to create a temporary directory in which to write scratch files needed during processing. A malicious user may create a symlink and then manipulate the directory so as to write to files to which she normally has no permissions.
This has been reported as a ``symlink vulnerability’', although I do not think that is an accurate description.
This vulnerability could possibly be used on a multi-user system to gain elevated privileges, e.g. root builds some packages, and another user successfully exploits this vulnerability to write to a system file.
#%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 2003-2018 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('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(37213);
script_version("1.13");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");
script_name(english:"FreeBSD : GNU libtool insecure temporary file handling (cacaffbc-5e64-11d8-80e3-0020ed76ef5a)");
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:
"libtool attempts to create a temporary directory in which to write
scratch files needed during processing. A malicious user may create a
symlink and then manipulate the directory so as to write to files to
which she normally has no permissions.
This has been reported as a ``symlink vulnerability'', although I do
not think that is an accurate description.
This vulnerability could possibly be used on a multi-user system to
gain elevated privileges, e.g. root builds some packages, and another
user successfully exploits this vulnerability to write to a system
file."
);
# http://www.geocrawler.com/mail/msg.php3?msg_id=3438808&list=405
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?cb8a324b"
);
# http://www.securityfocus.com/archive/1/352333
script_set_attribute(
attribute:"see_also",
value:"https://www.securityfocus.com/archive/1/352333"
);
# https://vuxml.freebsd.org/freebsd/cacaffbc-5e64-11d8-80e3-0020ed76ef5a.html
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?a27d80c3"
);
script_set_attribute(attribute:"solution", value:"Update the affected packages.");
script_set_attribute(attribute:"risk_factor", value:"High");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:libtool");
script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");
script_set_attribute(attribute:"vuln_publication_date", value:"2004/01/30");
script_set_attribute(attribute:"patch_publication_date", value:"2004/02/13");
script_set_attribute(attribute:"plugin_publication_date", value:"2009/04/23");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2009-2021 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:"libtool>=1.3<1.3.5_2")) flag++;
if (pkg_test(save_report:TRUE, pkg:"libtool>=1.4<1.4.3_3")) flag++;
if (pkg_test(save_report:TRUE, pkg:"libtool>=1.5<1.5.2")) 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");