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Debian Security Advisory DSA 3266-1 (fuse - security update)

🗓️ 21 May 2015 00:00:00Reported by Copyright (c) 2015 Greenbone Networks GmbH http://greenbone.netType 
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Debian Security Advisory DSA 3266-1 (fuse - security update). FUSE does not scrub environment before mount/umount, allowing local user to gain elevated privileges

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Code
# OpenVAS Vulnerability Test
# $Id: deb_3266.nasl 6609 2017-07-07 12:05:59Z cfischer $
# Auto-generated from advisory DSA 3266-1 using nvtgen 1.0
# Script version: 1.0
#
# Author:
# Greenbone Networks
#
# Copyright:
# Copyright (c) 2015 Greenbone Networks GmbH http://greenbone.net
# Text descriptions are largely excerpted from the referenced
# advisory, and are Copyright (c) the respective author(s)
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
#


if(description)
{
    script_id(703266);
    script_version("$Revision: 6609 $");
    script_cve_id("CVE-2015-3202");
    script_name("Debian Security Advisory DSA 3266-1 (fuse - security update)");
    script_tag(name: "last_modification", value: "$Date: 2017-07-07 14:05:59 +0200 (Fri, 07 Jul 2017) $");
    script_tag(name: "creation_date", value: "2015-05-21 00:00:00 +0200 (Thu, 21 May 2015)");
    script_tag(name:"cvss_base", value:"3.6");
    script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:N/I:P/A:P");
    script_tag(name: "solution_type", value: "VendorFix");
    script_tag(name: "qod_type", value: "package");

    script_xref(name: "URL", value: "http://www.debian.org/security/2015/dsa-3266.html");


    script_category(ACT_GATHER_INFO);

    script_copyright("Copyright (c) 2015 Greenbone Networks GmbH http://greenbone.net");
    script_family("Debian Local Security Checks");
    script_dependencies("gather-package-list.nasl");
    script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages");
    script_tag(name: "affected",  value: "fuse on Debian Linux");
        script_tag(name: "insight",   value: "Filesystem in Userspace (FUSE) is a simple interface for userspace programs to
export a virtual filesystem to the Linux kernel. It also aims to provide a
secure method for non privileged users to create and mount their own filesystem
implementations.");
    script_tag(name: "solution",  value: "For the oldstable distribution (wheezy), this problem has been fixed
in version 2.9.0-2+deb7u2.

For the stable distribution (jessie), this problem has been fixed in
version 2.9.3-15+deb8u1.

For the testing distribution (stretch) and the unstable distribution
(sid), this problem will be fixed soon.

We recommend that you upgrade your fuse packages.");
    script_tag(name: "summary",   value: "Tavis Ormandy discovered that FUSE, a Filesystem in USErspace, does not
scrub the environment before executing mount or umount with elevated
privileges. A local user can take advantage of this flaw to overwrite
arbitrary files and gain elevated privileges by accessing debugging
features via the environment that would not normally be safe for
unprivileged users.");
    script_tag(name: "vuldetect", value: "This check tests the installed software version using the apt package manager.");
    exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-deb.inc");

res = "";
report = "";
if ((res = isdpkgvuln(pkg:"fuse", ver:"2.9.0-2+deb7u2", rls_regex:"DEB7.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"fuse-dbg", ver:"2.9.0-2+deb7u2", rls_regex:"DEB7.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"fuse-udeb", ver:"2.9.0-2+deb7u2", rls_regex:"DEB7.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"fuse-utils", ver:"2.9.0-2+deb7u2", rls_regex:"DEB7.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libfuse-dev", ver:"2.9.0-2+deb7u2", rls_regex:"DEB7.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libfuse2", ver:"2.9.0-2+deb7u2", rls_regex:"DEB7.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libfuse2-udeb", ver:"2.9.0-2+deb7u2", rls_regex:"DEB7.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"fuse", ver:"2.9.3-15+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"fuse-dbg", ver:"2.9.3-15+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"fuse-udeb", ver:"2.9.3-15+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libfuse-dev", ver:"2.9.3-15+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libfuse2", ver:"2.9.3-15+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libfuse2-udeb", ver:"2.9.3-15+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
    report += res;
}

if (report != "") {
    security_message(data:report);
} else if (__pkg_match) {
    exit(99); # Not vulnerable.
}

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