The remote host is missing an update for the
# Copyright (C) 2020 Greenbone Networks GmbH
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(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("1.3.6.1.4.1.25623.1.0.844470");
script_version("2020-06-24T03:42:18+0000");
script_cve_id("CVE-2019-17023", "CVE-2020-12399");
script_tag(name:"cvss_base", value:"4.3");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:P/A:N");
script_tag(name:"last_modification", value:"2020-06-24 03:42:18 +0000 (Wed, 24 Jun 2020)");
script_tag(name:"creation_date", value:"2020-06-17 03:00:15 +0000 (Wed, 17 Jun 2020)");
script_name("Ubuntu: Security Advisory for nss (USN-4397-1)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2020 Greenbone Networks GmbH");
script_family("Ubuntu Local Security Checks");
script_dependencies("gather-package-list.nasl");
script_mandatory_keys("ssh/login/ubuntu_linux", "ssh/login/packages", re:"ssh/login/release=(UBUNTU19\.10|UBUNTU18\.04 LTS|UBUNTU16\.04 LTS|UBUNTU20\.04 LTS)");
script_xref(name:"USN", value:"4397-1");
script_xref(name:"URL", value:"https://lists.ubuntu.com/archives/ubuntu-security-announce/2020-June/005481.html");
script_tag(name:"summary", value:"The remote host is missing an update for the 'nss'
package(s) announced via the USN-4397-1 advisory.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");
script_tag(name:"insight", value:"It was discovered that NSS incorrectly handled the TLS State Machine. A
remote attacker could possibly use this issue to cause NSS to hang,
resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS
and Ubuntu 19.10. (CVE-2019-17023)
Cesar Pereida Garcia discovered that NSS incorrectly handled DSA key
generation. A local attacker could possibly use this issue to perform a
timing attack and recover DSA keys. (CVE-2020-12399)");
script_tag(name:"affected", value:"'nss' package(s) on Ubuntu 20.04 LTS, Ubuntu 19.10, Ubuntu 18.04 LTS, Ubuntu 16.04 LTS.");
script_tag(name:"solution", value:"Please install the updated package(s).");
script_tag(name:"solution_type", value:"VendorFix");
script_tag(name:"qod_type", value:"package");
exit(0);
}
include("revisions-lib.inc");
include("pkg-lib-deb.inc");
release = dpkg_get_ssh_release();
if(!release)
exit(0);
res = "";
report = "";
if(release == "UBUNTU19.10") {
if(!isnull(res = isdpkgvuln(pkg:"libnss3", ver:"2:3.45-1ubuntu2.3", rls:"UBUNTU19.10"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
if(release == "UBUNTU18.04 LTS") {
if(!isnull(res = isdpkgvuln(pkg:"libnss3", ver:"2:3.35-2ubuntu2.8", rls:"UBUNTU18.04 LTS"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
if(release == "UBUNTU16.04 LTS") {
if(!isnull(res = isdpkgvuln(pkg:"libnss3", ver:"2:3.28.4-0ubuntu0.16.04.11", rls:"UBUNTU16.04 LTS"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
if(release == "UBUNTU20.04 LTS") {
if(!isnull(res = isdpkgvuln(pkg:"libnss3", ver:"2:3.49.1-1ubuntu1.1", rls:"UBUNTU20.04 LTS"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
exit(0);