Vulnerabilities > CVE-2017-7718 - Out-of-bounds Read vulnerability in multiple products

#
# (C) Tenable Network Security, Inc.
#
# The package checks in this plugin were extracted from OracleVM
# Security Advisory OVMSA-2018-0238.
#

include("compat.inc");

if (description)
{
  script_id(111023);
  script_version("1.8");
  script_cvs_date("Date: 2019/09/27 13:00:35");

  script_cve_id("CVE-2016-9603", "CVE-2017-13672", "CVE-2017-15289", "CVE-2017-2633", "CVE-2017-5715", "CVE-2017-7718", "CVE-2017-7980", "CVE-2018-3639", "CVE-2018-5683", "CVE-2018-7858");

  script_name(english:"OracleVM 3.4 : qemu-kvm (OVMSA-2018-0238) (Spectre)");
  script_summary(english:"Checks the RPM output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote OracleVM host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote OracleVM system is missing necessary patches to address
critical security updates :

  -
    qemu-kvm-i386-define-the-ssbd-CPUID-feature-bit-CVE-2018
    -3639.patch 

  -
    qemu-kvm-i386-Define-the-Virt-SSBD-MSR-and-handling-of-i
    t-CVE.patch 

  -
    qemu-kvm-i386-define-the-AMD-virt-ssbd-CPUID-feature-bit
    -CVE-.patch 

  - Resolves: bz#1574074 (CVE-2018-3639 qemu-kvm: hw: cpu:
    speculative store bypass [rhel-6.10.z])

  - kvm-vga-add-share_surface-flag.patch [bz#1553674]

  - kvm-vga-add-sanity-checks.patch [bz#1553674]

  - Resolves: bz#1553674 (CVE-2018-7858 qemu-kvm: Qemu:
    cirrus: OOB access when updating vga display [rhel-6])

  - kvm-target-i386-add-support-for-SPEC_CTRL-MSR.patch
    [bz#1525939 bz#1528024]

  -
    kvm-target-i386-cpu-add-new-CPUID-bits-for-indirect-bran
    .patch 

  -
    kvm-target-i386-cpu-add-new-CPU-models-for-indirect-bran
    .patch 

  -
    kvm-cirrus-fix-oob-access-in-mode4and5-write-functions.p
    atch [bz#1501298]

  -
    kvm-vga-stop-passing-pointers-to-vga_draw_line-functions
    .patch 

  -
    kvm-vga-check-the-validation-of-memory-addr-when-draw-te
    .patch 

  - Resolves: bz#1486641 (CVE-2017-13672 qemu-kvm-rhev:
    Qemu: vga: OOB read access during display update
    [rhel-6.10])

  - Resolves: bz#1501298 (CVE-2017-15289 qemu-kvm: Qemu:
    cirrus: OOB access issue in mode4and5 write functions
    [rhel-6.10])

  - Resolves: bz#1525939 (CVE-2017-5715 qemu-kvm: hw: cpu:
    speculative execution branch target injection
    [rhel-6.10])

  - Resolves: bz#1528024 (CVE-2017-5715 qemu-kvm-rhev: hw:
    cpu: speculative execution branch target injection
    [rhel-6.10])

  - Resolves: bz#1534692 (CVE-2018-5683 qemu-kvm: Qemu:
    Out-of-bounds read in vga_draw_text routine [rhel-6.10])

  - Resolves: bz#1549152 (qemu-kvm-rhev: remove unused patch
    file [rhel-6.10])

  - kvm-vns-tls-don-t-use-depricated-gnutls-functions.patch
    [bz#1428750]

  - kvm-vnc-apply-display-size-limits.patch [bz#1430616
    bz#1430617]

  -
    kvm-fix-cirrus_vga-fix-OOB-read-case-qemu-Segmentation-f
    .patch 

  -
    kvm-cirrus-vnc-zap-bitblit-support-from-console-code.pat
    ch [bz#1443448 bz#1443450 bz#1447542 bz#1447545]

  - kvm-cirrus-avoid-write-only-variables.patch [bz#1444378
    bz#1444380]

  -
    kvm-cirrus-stop-passing-around-dst-pointers-in-the-blitt
    .patch 

  -
    kvm-cirrus-stop-passing-around-src-pointers-in-the-blitt
    .patch 

  -
    kvm-cirrus-fix-off-by-one-in-cirrus_bitblt_rop_bkwd_tran
    .patch 

  - kvm-cirrus-fix-PUTPIXEL-macro.patch [bz#1444378
    bz#1444380]

  - Resolves: bz#1428750 (Fails to build in brew)

  - Resolves: bz#1430616 (CVE-2017-2633 qemu-kvm: Qemu: VNC:
    memory corruption due to unchecked resolution limit
    [rhel-6.10])

  - Resolves: bz#1430617 (CVE-2017-2633 qemu-kvm-rhev: Qemu:
    VNC: memory corruption due to unchecked resolution limit
    [rhel-6.10])

  - Resolves: bz#1443448 (CVE-2017-7718 qemu-kvm: Qemu:
    display: cirrus: OOB read access issue [rhel-6.10])

  - Resolves: bz#1443450 (CVE-2017-7718 qemu-kvm-rhev: Qemu:
    display: cirrus: OOB read access issue [rhel-6.10])

  - Resolves: bz#1444378 (CVE-2017-7980 qemu-kvm: Qemu:
    display: cirrus: OOB r/w access issues in bitblt
    routines [rhel-6.10])

  - Resolves: bz#1444380 (CVE-2017-7980 qemu-kvm-rhev: Qemu:
    display: cirrus: OOB r/w access issues in bitblt
    routines [rhel-6.10])

  - Resolves: bz#1447542 (CVE-2016-9603 qemu-kvm: Qemu:
    cirrus: heap buffer overflow via vnc connection
    [rhel-6.10])

  - Resolves: bz#1447545 (CVE-2016-9603 qemu-kvm-rhev: Qemu:
    cirrus: heap buffer overflow via vnc connection
    [rhel-6.10])"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/oraclevm-errata/2018-July/000873.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected qemu-img package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:qemu-img");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:vm_server:3.4");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/04/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/07/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/07/12");
  script_set_attribute(attribute:"in_the_news", value:"true");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"OracleVM Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/OracleVM/release", "Host/OracleVM/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/OracleVM/release");
if (isnull(release) || "OVS" >!< release) audit(AUDIT_OS_NOT, "OracleVM");
if (! preg(pattern:"^OVS" + "3\.4" + "(\.[0-9]|$)", string:release)) audit(AUDIT_OS_NOT, "OracleVM 3.4", "OracleVM " + release);
if (!get_kb_item("Host/OracleVM/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "OracleVM", cpu);
if ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu);

flag = 0;
if (rpm_check(release:"OVS3.4", reference:"qemu-img-0.12.1.2-2.506.el6_10.1")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "qemu-img");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2017:1143-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(99959);
  script_version("3.11");
  script_cvs_date("Date: 2019/09/11 11:22:15");

  script_cve_id("CVE-2016-9603", "CVE-2017-7718");

  script_name(english:"SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2017:1143-1)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SUSE host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for xen fixes several issues. These security issues were
fixed :

  - A malicious 64-bit PV guest may be able to access all of
    system memory, allowing for all of privilege escalation,
    host crashes, and information leaks by placing a IRET
    hypercall in the middle of a multicall batch (XSA-213,
    bsc#1034843)

  - A malicious pair of guests may be able to access all of
    system memory, allowing for all of privilege escalation,
    host crashes, and information leaks because of a missing
    check when transfering pages via GNTTABOP_transfer
    (XSA-214, bsc#1034844).

  - CVE-2017-7718: hw/display/cirrus_vga_rop.h allowed local
    guest OS privileged users to cause a denial of service
    (out-of-bounds read and QEMU process crash) via vectors
    related to copying VGA data via the
    cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_
    functions (bsc#1034994).

  - CVE-2016-9603: A privileged user within the guest VM
    could have caused a heap overflow in the device model
    process, potentially escalating their privileges to that
    of the device model process (bsc#1028655)

The update package also includes non-security fixes. See advisory for
details.

Note that Tenable Network Security has extracted the preceding
description block directly from the SUSE security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1022703"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1028655"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1029827"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1030144"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1034843"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1034844"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1034994"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1036146"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-9603/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-7718/"
  );
  # https://www.suse.com/support/update/announcement/2017/suse-su-20171143-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?93872939"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Software Development Kit 12-SP2:zypper in -t
patch SUSE-SLE-SDK-12-SP2-2017-663=1

SUSE Linux Enterprise Server 12-SP2:zypper in -t patch
SUSE-SLE-SERVER-12-SP2-2017-663=1

SUSE Linux Enterprise Desktop 12-SP2:zypper in -t patch
SUSE-SLE-DESKTOP-12-SP2-2017-663=1

To bring your system up-to-date, use 'zypper patch'."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-doc-html");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-libs-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools-domU");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools-domU-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/04/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/05/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/05/03");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
os_ver = os_ver[1];
if (! preg(pattern:"^(SLED12|SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED12 / SLES12", "SUSE " + os_ver);

if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);
if (cpu >!< "x86_64") audit(AUDIT_ARCH_NOT, "x86_64", cpu);


sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(2)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP2", os_ver + " SP" + sp);
if (os_ver == "SLED12" && (! preg(pattern:"^(2)$", string:sp))) audit(AUDIT_OS_NOT, "SLED12 SP2", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-4.7.2_04-39.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-debugsource-4.7.2_04-39.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-doc-html-4.7.2_04-39.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-libs-32bit-4.7.2_04-39.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-libs-4.7.2_04-39.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-libs-debuginfo-32bit-4.7.2_04-39.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-libs-debuginfo-4.7.2_04-39.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-tools-4.7.2_04-39.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-tools-debuginfo-4.7.2_04-39.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-tools-domU-4.7.2_04-39.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-tools-domU-debuginfo-4.7.2_04-39.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"xen-4.7.2_04-39.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"xen-debugsource-4.7.2_04-39.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"xen-libs-32bit-4.7.2_04-39.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"xen-libs-4.7.2_04-39.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"xen-libs-debuginfo-32bit-4.7.2_04-39.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"xen-libs-debuginfo-4.7.2_04-39.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "xen");
}