openSUSE: Security Advisory for gnutls (openSUSE-SU-2020:0790-1)

# 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("1.3.6.1.4.1.25623.1.0.853201");
  script_version("2021-08-13T12:00:53+0000");
  script_cve_id("CVE-2020-13777");
  script_tag(name:"cvss_base", value:"5.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:N");
  script_tag(name:"last_modification", value:"2021-08-13 12:00:53 +0000 (Fri, 13 Aug 2021)");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-08-18 15:05:00 +0000 (Tue, 18 Aug 2020)");
  script_tag(name:"creation_date", value:"2020-06-11 03:01:48 +0000 (Thu, 11 Jun 2020)");
  script_name("openSUSE: Security Advisory for gnutls (openSUSE-SU-2020:0790-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2020 Greenbone Networks GmbH");
  script_family("SuSE Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/suse", "ssh/login/rpms", re:"ssh/login/release=openSUSELeap15\.1");

  script_xref(name:"openSUSE-SU", value:"2020:0790-1");
  script_xref(name:"URL", value:"http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00015.html");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'gnutls'
  package(s) announced via the openSUSE-SU-2020:0790-1 advisory.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");

  script_tag(name:"insight", value:"This update for gnutls fixes the following issues:

  - CVE-2020-13777: Fixed an insecure session ticket key construction which
  could have made the TLS server to not bind the session ticket encryption
  key with a value supplied by the application until the initial key
  rotation, allowing an attacker to bypass authentication in TLS 1.3 and
  recover previous conversations in TLS 1.2 (bsc#1172506).

  - Fixed an  improper handling of certificate chain with cross-signed
  intermediate CA certificates (bsc#1172461).

  This update was imported from the SUSE:SLE-15:Update update project.


  Patch Instructions:

  To install this openSUSE Security Update use the SUSE recommended
  installation methods
  like YaST online_update or 'zypper patch'.

  Alternatively you can run the command listed for your product:

  - openSUSE Leap 15.1:

  zypper in -t patch openSUSE-2020-790=1");

  script_tag(name:"affected", value:"'gnutls' package(s) on openSUSE Leap 15.1.");

  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-rpm.inc");

release = rpm_get_ssh_release();
if(!release)
  exit(0);

res = "";
report = "";

if(release == "openSUSELeap15.1") {

  if(!isnull(res = isrpmvuln(pkg:"gnutls", rpm:"gnutls~3.6.7~lp151.2.18.1", rls:"openSUSELeap15.1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"gnutls-debuginfo", rpm:"gnutls-debuginfo~3.6.7~lp151.2.18.1", rls:"openSUSELeap15.1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"gnutls-debugsource", rpm:"gnutls-debugsource~3.6.7~lp151.2.18.1", rls:"openSUSELeap15.1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"gnutls-guile", rpm:"gnutls-guile~3.6.7~lp151.2.18.1", rls:"openSUSELeap15.1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"gnutls-guile-debuginfo", rpm:"gnutls-guile-debuginfo~3.6.7~lp151.2.18.1", rls:"openSUSELeap15.1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libgnutls-dane-devel", rpm:"libgnutls-dane-devel~3.6.7~lp151.2.18.1", rls:"openSUSELeap15.1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libgnutls-dane0", rpm:"libgnutls-dane0~3.6.7~lp151.2.18.1", rls:"openSUSELeap15.1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libgnutls-dane0-debuginfo", rpm:"libgnutls-dane0-debuginfo~3.6.7~lp151.2.18.1", rls:"openSUSELeap15.1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libgnutls-devel", rpm:"libgnutls-devel~3.6.7~lp151.2.18.1", rls:"openSUSELeap15.1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libgnutls30", rpm:"libgnutls30~3.6.7~lp151.2.18.1", rls:"openSUSELeap15.1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libgnutls30-debuginfo", rpm:"libgnutls30-debuginfo~3.6.7~lp151.2.18.1", rls:"openSUSELeap15.1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libgnutls30-hmac", rpm:"libgnutls30-hmac~3.6.7~lp151.2.18.1", rls:"openSUSELeap15.1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libgnutlsxx-devel", rpm:"libgnutlsxx-devel~3.6.7~lp151.2.18.1", rls:"openSUSELeap15.1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libgnutlsxx28", rpm:"libgnutlsxx28~3.6.7~lp151.2.18.1", rls:"openSUSELeap15.1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libgnutlsxx28-debuginfo", rpm:"libgnutlsxx28-debuginfo~3.6.7~lp151.2.18.1", rls:"openSUSELeap15.1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libgnutls-devel-32bit", rpm:"libgnutls-devel-32bit~3.6.7~lp151.2.18.1", rls:"openSUSELeap15.1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libgnutls30-32bit", rpm:"libgnutls30-32bit~3.6.7~lp151.2.18.1", rls:"openSUSELeap15.1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libgnutls30-32bit-debuginfo", rpm:"libgnutls30-32bit-debuginfo~3.6.7~lp151.2.18.1", rls:"openSUSELeap15.1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libgnutls30-hmac-32bit", rpm:"libgnutls30-hmac-32bit~3.6.7~lp151.2.18.1", rls:"openSUSELeap15.1"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

exit(0);