Several issues were discovered in libytnef, a library used to decode
application/ms-tnef e-mail attachments. Multiple heap overflows,
out-of-bound writes and reads, NULL pointer dereferences and infinite
loops could be exploited by tricking a user into opening a maliciously
crafted winmail.dat file.
# OpenVAS Vulnerability Test
# $Id: deb_3846.nasl 6607 2017-07-07 12:04:25Z cfischer $
# Auto-generated from advisory DSA 3846-1 using nvtgen 1.0
# Script version: 1.0
#
# Author:
# Greenbone Networks
#
# Copyright:
# Copyright (c) 2017 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(703846);
script_version("$Revision: 6607 $");
script_cve_id("CVE-2017-6298", "CVE-2017-6299", "CVE-2017-6300", "CVE-2017-6301", "CVE-2017-6302", "CVE-2017-6303", "CVE-2017-6304", "CVE-2017-6305", "CVE-2017-6306", "CVE-2017-6800", "CVE-2017-6801", "CVE-2017-6802");
script_name("Debian Security Advisory DSA 3846-1 (libytnef - security update)");
script_tag(name: "last_modification", value: "$Date: 2017-07-07 14:04:25 +0200 (Fri, 07 Jul 2017) $");
script_tag(name: "creation_date", value: "2017-05-09 00:00:00 +0200 (Tue, 09 May 2017)");
script_tag(name:"cvss_base", value:"6.8");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/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/2017/dsa-3846.html");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (c) 2017 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: "libytnef on Debian Linux");
script_tag(name: "solution", value: "For the stable distribution (jessie), these problems have been fixed in
version 1.5-6+deb8u1.
For the upcoming stable (stretch) and unstable (sid) distributions,
these problems have been fixed in version 1.9.2-1.
We recommend that you upgrade your libytnef packages.");
script_tag(name: "summary", value: "Several issues were discovered in libytnef, a library used to decode
application/ms-tnef e-mail attachments. Multiple heap overflows,
out-of-bound writes and reads, NULL pointer dereferences and infinite
loops could be exploited by tricking a user into opening a maliciously
crafted winmail.dat file.");
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:"libytnef0:i386", ver:"1.5-6+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"libytnef0:amd64", ver:"1.5-6+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"libytnef0-dev:i386", ver:"1.5-6+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"libytnef0-dev:amd64", ver:"1.5-6+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"libytnef0:i386", ver:"1.9.2-1", rls_regex:"DEB9.[0-9]+")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"libytnef0:amd64", ver:"1.9.2-1", rls_regex:"DEB9.[0-9]+")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"libytnef0-dev:amd64", ver:"1.9.2-1", rls_regex:"DEB9.[0-9]+")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"libytnef0-dev:i386", ver:"1.9.2-1", rls_regex:"DEB9.[0-9]+")) != NULL) {
report += res;
}
if ((res = isdpkgvuln(pkg:"ytnef-tools", ver:"1.9.2-1", rls_regex:"DEB9.[0-9]+")) != NULL) {
report += res;
}
if (report != "") {
security_message(data:report);
} else if (__pkg_match) {
exit(99); # Not vulnerable.
}