Two issues were discovered in OpenSSL, the Secure Sockets Layer toolkit.
CVE-2018-0732
Denial of service by a malicious server that sends a very large
prime value to the client during TLS handshake.
CVE-2018-0737
Alejandro Cabrera Aldaya, Billy Brumley, Cesar Pereida Garcia and
Luis Manuel Alvarez Tapia discovered that the OpenSSL RSA Key
generation algorithm has been shown to be vulnerable to a cache
timing side channel attack. An attacker with sufficient access to
mount cache timing attacks during the RSA key generation process
could recover the private key.
# Copyright (C) 2018 Greenbone Networks GmbH
# Text descriptions are largely excerpted from the referenced
# advisory, and are Copyright (C) of the respective author(s)
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# 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_oid("1.3.6.1.4.1.25623.1.0.891449");
script_version("2020-01-29T08:22:52+0000");
script_cve_id("CVE-2018-0732", "CVE-2018-0737");
script_name("Debian LTS: Security Advisory for openssl (DLA-1449-1)");
script_tag(name:"last_modification", value:"2020-01-29 08:22:52 +0000 (Wed, 29 Jan 2020)");
script_tag(name:"creation_date", value:"2018-07-30 00:00:00 +0200 (Mon, 30 Jul 2018)");
script_tag(name:"cvss_base", value:"5.0");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
script_tag(name:"solution_type", value:"VendorFix");
script_tag(name:"qod_type", value:"package");
script_xref(name:"URL", value:"https://lists.debian.org/debian-lts-announce/2018/07/msg00043.html");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2018 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", re:"ssh/login/release=DEB8");
script_tag(name:"affected", value:"openssl on Debian Linux");
script_tag(name:"solution", value:"For Debian 8 'Jessie', these problems have been fixed in version
1.0.1t-1+deb8u9.
We recommend that you upgrade your openssl packages.");
script_tag(name:"summary", value:"Two issues were discovered in OpenSSL, the Secure Sockets Layer toolkit.
CVE-2018-0732
Denial of service by a malicious server that sends a very large
prime value to the client during TLS handshake.
CVE-2018-0737
Alejandro Cabrera Aldaya, Billy Brumley, Cesar Pereida Garcia and
Luis Manuel Alvarez Tapia discovered that the OpenSSL RSA Key
generation algorithm has been shown to be vulnerable to a cache
timing side channel attack. An attacker with sufficient access to
mount cache timing attacks during the RSA key generation process
could recover the private key.");
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(!isnull(res = isdpkgvuln(pkg:"libssl-dev", ver:"1.0.1t-1+deb8u9", rls:"DEB8"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libssl-doc", ver:"1.0.1t-1+deb8u9", rls:"DEB8"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libssl1.0.0", ver:"1.0.1t-1+deb8u9", rls:"DEB8"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libssl1.0.0-dbg", ver:"1.0.1t-1+deb8u9", rls:"DEB8"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"openssl", ver:"1.0.1t-1+deb8u9", rls:"DEB8"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}