openSUSE: Security Advisory for xen (openSUSE-SU-2016:3134-1)

# Copyright (C) 2017 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("1.3.6.1.4.1.25623.1.0.851495");
  script_version("2025-02-28T05:38:49+0000");
  script_tag(name:"last_modification", value:"2025-02-28 05:38:49 +0000 (Fri, 28 Feb 2025)");
  script_tag(name:"creation_date", value:"2017-02-22 15:15:10 +0100 (Wed, 22 Feb 2017)");
  script_cve_id("CVE-2016-7777", "CVE-2016-7908", "CVE-2016-7909", "CVE-2016-8667",
                "CVE-2016-8669", "CVE-2016-8910", "CVE-2016-9377", "CVE-2016-9378",
                "CVE-2016-9379", "CVE-2016-9380", "CVE-2016-9381", "CVE-2016-9382",
                "CVE-2016-9383", "CVE-2016-9384", "CVE-2016-9385", "CVE-2016-9386",
                "CVE-2016-9637");
  script_tag(name:"cvss_base", value:"7.2");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2017-07-01 01:30:00 +0000 (Sat, 01 Jul 2017)");
  script_tag(name:"qod_type", value:"package");
  script_name("openSUSE: Security Advisory for xen (openSUSE-SU-2016:3134-1)");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'xen'
  package(s) announced via the referenced advisory.");

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

  script_tag(name:"insight", value:"xen was updated to version 4.7.1 to fix 17 security issues.

  These security issues were fixed:

  - CVE-2016-9637: ioport array overflow allowing a malicious guest
  administrator can escalate their privilege to that of the host
  (bsc#1011652).

  - CVE-2016-9386: x86 null segments were not always treated as unusable
  allowing an unprivileged guest user program to elevate its privilege to
  that of the guest operating system. Exploit of this vulnerability is
  easy on Intel and more complicated on AMD (bsc#1009100).

  - CVE-2016-9382: x86 task switch to VM86 mode was mis-handled, allowing a
  unprivileged guest process to escalate its privilege to that of the
  guest operating system on AMD hardware. On Intel hardware a malicious
  unprivileged guest process can crash the guest (bsc#1009103).

  - CVE-2016-9385: x86 segment base write emulation lacked canonical address
  checks, allowing a malicious guest administrator to crash the host
  (bsc#1009104).

  - CVE-2016-9384: Guest 32-bit ELF symbol table load leaking host data to
  unprivileged guest users (bsc#1009105).

  - CVE-2016-9383: The x86 64-bit bit test instruction emulation was broken,
  allowing a guest to modify arbitrary memory leading to arbitrary code
  execution (bsc#1009107).

  - CVE-2016-9377: x86 software interrupt injection was mis-handled,
  allowing an unprivileged guest user to crash the guest (bsc#1009108).

  - CVE-2016-9378: x86 software interrupt injection was mis-handled,
  allowing an unprivileged guest user to crash the guest (bsc#1009108)

  - CVE-2016-9381: Improper processing of shared rings allowing guest
  administrators take over the qemu process, elevating their privilege to
  that of the qemu process (bsc#1009109).

  - CVE-2016-9379: Delimiter injection vulnerabilities in pygrub allowed
  guest administrators to obtain the contents of sensitive host files or
  delete the files (bsc#1009111).

  - CVE-2016-9380: Delimiter injection vulnerabilities in pygrub allowed
  guest administrators to obtain the contents of sensitive host files or
  delete the files  (bsc#1009111).

  - CVE-2016-7777: Xen did not properly honor CR0.TS and CR0.EM, which
  allowed local x86 HVM guest OS users to read or modify FPU, MMX, or XMM
  register state information belonging to arbitrary tasks on the guest by
  modifying an instruction while the hypervisor is preparing to emulate it
  (bsc#1000106).

  - CVE-2016-8910: The rtl8139_cplus_transmit function in hw/net/rtl8139.c
  allowed local guest OS administrators to cause a denial of service
  (infinite loop and CPU consumption) by leveraging failure to limit the
  ring description ...

  Description truncated, please see the referenced URL(s) for more information.");

  script_tag(name:"affected", value:"xen on openSUSE Leap 42.2");

  script_tag(name:"solution", value:"Please install the updated package(s).");

  script_xref(name:"openSUSE-SU", value:"2016:3134-1");
  script_tag(name:"solution_type", value:"VendorFix");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2017 Greenbone Networks GmbH");
  script_family("SuSE Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/opensuse", "ssh/login/rpms", re:"ssh/login/release=openSUSELeap42\.2");
  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-rpm.inc");

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

res = "";
report = "";

if(release == "openSUSELeap42.2") {
  if(!isnull(res = isrpmvuln(pkg:"xen-debugsource", rpm:"xen-debugsource~4.7.1_02~3.1", rls:"openSUSELeap42.2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen-devel", rpm:"xen-devel~4.7.1_02~3.1", rls:"openSUSELeap42.2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen-libs", rpm:"xen-libs~4.7.1_02~3.1", rls:"openSUSELeap42.2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen-libs-debuginfo", rpm:"xen-libs-debuginfo~4.7.1_02~3.1", rls:"openSUSELeap42.2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen-tools-domU", rpm:"xen-tools-domU~4.7.1_02~3.1", rls:"openSUSELeap42.2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen-tools-domU-debuginfo", rpm:"xen-tools-domU-debuginfo~4.7.1_02~3.1", rls:"openSUSELeap42.2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen", rpm:"xen~4.7.1_02~3.1", rls:"openSUSELeap42.2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen-doc-html", rpm:"xen-doc-html~4.7.1_02~3.1", rls:"openSUSELeap42.2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen-libs-32bit", rpm:"xen-libs-32bit~4.7.1_02~3.1", rls:"openSUSELeap42.2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen-libs-debuginfo-32bit", rpm:"xen-libs-debuginfo-32bit~4.7.1_02~3.1", rls:"openSUSELeap42.2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen-tools", rpm:"xen-tools~4.7.1_02~3.1", rls:"openSUSELeap42.2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen-tools-debuginfo", rpm:"xen-tools-debuginfo~4.7.1_02~3.1", rls:"openSUSELeap42.2"))) {
    report += res;
  }

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

exit(0);