SUSE: Security Advisory (SUSE-SU-2018:3686-1)

# SPDX-FileCopyrightText: 2021 Greenbone AG
# 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-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.1.4.2018.3686.1");
  script_cve_id("CVE-2018-15473", "CVE-2018-15919");
  script_tag(name:"creation_date", value:"2021-06-09 14:57:34 +0000 (Wed, 09 Jun 2021)");
  script_version("2024-02-02T14:37:50+0000");
  script_tag(name:"last_modification", value:"2024-02-02 14:37:50 +0000 (Fri, 02 Feb 2024)");
  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:"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:"2018-11-07 16:04:30 +0000 (Wed, 07 Nov 2018)");

  script_name("SUSE: Security Advisory (SUSE-SU-2018:3686-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2021 Greenbone AG");
  script_family("SuSE Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/suse_sles", "ssh/login/rpms", re:"ssh/login/release=(SLES15\.0)");

  script_xref(name:"Advisory-ID", value:"SUSE-SU-2018:3686-1");
  script_xref(name:"URL", value:"https://www.suse.com/support/update/announcement/2018/suse-su-20183686-1/");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'openssh' package(s) announced via the SUSE-SU-2018:3686-1 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 existance 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)");

  script_tag(name:"affected", value:"'openssh' package(s) on SUSE Linux Enterprise Module for Basesystem 15, SUSE Linux Enterprise Module for Desktop Applications 15, SUSE Linux Enterprise Module for Open Buildservice Development Tools 15, SUSE Linux Enterprise Module for Server Applications 15.");

  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 == "SLES15.0") {

  if(!isnull(res = isrpmvuln(pkg:"openssh", rpm:"openssh~7.6p1~9.3.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openssh-debuginfo", rpm:"openssh-debuginfo~7.6p1~9.3.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openssh-debugsource", rpm:"openssh-debugsource~7.6p1~9.3.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openssh-helpers", rpm:"openssh-helpers~7.6p1~9.3.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openssh-helpers-debuginfo", rpm:"openssh-helpers-debuginfo~7.6p1~9.3.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openssh-askpass-gnome", rpm:"openssh-askpass-gnome~7.6p1~9.3.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openssh-askpass-gnome-debuginfo", rpm:"openssh-askpass-gnome-debuginfo~7.6p1~9.3.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openssh-fips", rpm:"openssh-fips~7.6p1~9.3.1", rls:"SLES15.0"))) {
    report += res;
  }

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

exit(0);