| code | #%NASL_MIN_LEVEL 80502
#
# (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(18868);
script_version("1.15");
script_cvs_date("Date: 2019/08/02 13:32:37");
script_cve_id("CVE-2005-0610");
script_name(english:"FreeBSD : portupgrade -- insecure temporary file handling vulnerability (22f00553-a09d-11d9-a788-0001020eed82)");
script_summary(english:"Checks for updated package in pkg_info output");
script_set_attribute(
attribute:"synopsis",
value:"The remote FreeBSD host is missing a security-related update."
);
script_set_attribute(
attribute:"description",
value:
"Simon L. Nielsen discovered that portupgrade handles temporary files
in an insecure manner. This could allow an unprivileged local attacker
to execute arbitrary commands or overwrite arbitrary files with the
permissions of the user running portupgrade, typically root, by way of
a symlink attack.
The following issues exist where the temporary files are created, by
default in the world writeable directory /var/tmp, with the
permissions of the user running portupgrade :
- pkg_fetch download packages with a predictable local filename
allowing a local attacker to overwrite arbitrary local files or
potentially replace the downloaded package after download but before
install with a package with malicious content, allowing the attacker
to run arbitrary commands.
- portupgrade will, when upgrading ports/packages, write the old
package to a predictable temporary file, allowing an attacker to
overwrite arbitrary files via a symlink attack.
- portupgrade will touch a temporary file with a constant filename
(pkgdb.fixme) allowing an attacker to create arbitrary zero-byte files
via a symlink attack.
A workaround for these issues is to set the PKG_TMPDIR environment
variable to a directory only write-able by the user running
portupgrade."
);
# https://vuxml.freebsd.org/freebsd/22f00553-a09d-11d9-a788-0001020eed82.html
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?7e81db2f"
);
script_set_attribute(attribute:"solution", value:"Update the affected package.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:portupgrade");
script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");
script_set_attribute(attribute:"vuln_publication_date", value:"2005/04/12");
script_set_attribute(attribute:"patch_publication_date", value:"2005/04/12");
script_set_attribute(attribute:"plugin_publication_date", value:"2005/07/13");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2005-2019 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:"portupgrade>=10000000_9<20041226_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");
|