openSUSE: Security Advisory for openssh (openSUSE-SU-2018:3801-1)

# Copyright (C) 2018 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("1.3.6.1.4.1.25623.1.0.852132");
  script_version("2023-11-03T16:10:08+0000");
  script_cve_id("CVE-2018-15473", "CVE-2018-15919");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_tag(name:"last_modification", value:"2023-11-03 16:10:08 +0000 (Fri, 03 Nov 2023)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-03-07 16:29:00 +0000 (Thu, 07 Mar 2019)");
  script_tag(name:"creation_date", value:"2018-11-17 06:15:52 +0100 (Sat, 17 Nov 2018)");
  script_name("openSUSE: Security Advisory for openssh (openSUSE-SU-2018:3801-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2018 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\.0");

  script_xref(name:"openSUSE-SU", value:"2018:3801-1");
  script_xref(name:"URL", value:"https://lists.opensuse.org/opensuse-security-announce/2018-11/msg00023.html");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'openssh'
  package(s) announced via the openSUSE-SU-2018:3801-1 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 openssh fixes the following issues:

  - CVE-2018-15919: Remotely observable behaviour in auth-gss2.c in OpenSSH
  could be used by remote attackers to detect existence of users on a
  target system when GSS2 is in use. OpenSSH developers do not want to
  treat such a username enumeration (or 'oracle') as a vulnerability.
  (bsc#1106163)

  - CVE-2018-15473: OpenSSH was prone to a user existence oracle
  vulnerability due to not delaying bailout for an invalid authenticating
  user until after the packet containing the request has been fully
  parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c.
  (bsc#1105010)

  The following non-security issues were fixed:

  - Stop leaking File descriptors (bsc#964336)

  - sftp-client.c returns wrong error code upon failure (bsc#1091396)

  - added pam_keyinit to pam configuration file (bsc#1081947)


  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 15.0:

  zypper in -t patch openSUSE-2018-1419=1");

  script_tag(name:"affected", value:"openssh on openSUSE Leap 15.0.");

  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 == "openSUSELeap15.0") {
  if(!isnull(res = isrpmvuln(pkg:"openssh", rpm:"openssh~7.6p1~lp150.8.3.1", rls:"openSUSELeap15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openssh-cavs", rpm:"openssh-cavs~7.6p1~lp150.8.3.1", rls:"openSUSELeap15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openssh-cavs-debuginfo", rpm:"openssh-cavs-debuginfo~7.6p1~lp150.8.3.1", rls:"openSUSELeap15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openssh-debuginfo", rpm:"openssh-debuginfo~7.6p1~lp150.8.3.1", rls:"openSUSELeap15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openssh-debugsource", rpm:"openssh-debugsource~7.6p1~lp150.8.3.1", rls:"openSUSELeap15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openssh-fips", rpm:"openssh-fips~7.6p1~lp150.8.3.1", rls:"openSUSELeap15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openssh-helpers", rpm:"openssh-helpers~7.6p1~lp150.8.3.1", rls:"openSUSELeap15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openssh-helpers-debuginfo", rpm:"openssh-helpers-debuginfo~7.6p1~lp150.8.3.1", rls:"openSUSELeap15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openssh-askpass-gnome", rpm:"openssh-askpass-gnome~7.6p1~lp150.8.3.1", rls:"openSUSELeap15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openssh-askpass-gnome-debuginfo", rpm:"openssh-askpass-gnome-debuginfo~7.6p1~lp150.8.3.1", rls:"openSUSELeap15.0"))) {
    report += res;
  }

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

exit(0);