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 arbitray 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 descriptor count (bsc#1007157).
CVE-2016-8667: The rc4030_write function in hw/dma/rc4030.c in allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via a large interval timer reload value (bsc#1005004).
CVE-2016-8669: The serial_update_parameters function in hw/char/serial.c allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via vectors involving a value of divider greater than baud base (bsc#1005005).
CVE-2016-7908: The mcf_fec_do_tx function in hw/net/mcf_fec.c did not properly limit the buffer descriptor count when transmitting packets, which allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags (bsc#1003030).
CVE-2016-7909: The pcnet_rdra_addr function in hw/net/pcnet.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by setting the (1) receive or (2) transmit descriptor ring length to 0 (bsc#1003032).
These non-security issues were fixed :
bsc#1004981: Xen RPM didn’t contain debug hypervisor for EFI systems
bsc#1007941: Xen tools limited the number of vcpus to 256
This update was imported from the SUSE:SLE-12-SP2:Update update project.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2016-1477.
#
# The text description of this plugin is (C) SUSE LLC.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(95910);
script_version("3.11");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");
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_xref(name:"IAVB", value:"2016-B-0149-S");
script_xref(name:"IAVB", value:"2016-B-0190-S");
script_name(english:"openSUSE Security Update : xen (openSUSE-2016-1477)");
script_summary(english:"Check for the openSUSE-2016-1477 patch");
script_set_attribute(
attribute:"synopsis",
value:"The remote openSUSE host is missing a security update."
);
script_set_attribute(
attribute:"description",
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 arbitray 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
descriptor count (bsc#1007157).
- CVE-2016-8667: The rc4030_write function in
hw/dma/rc4030.c in allowed local guest OS administrators
to cause a denial of service (divide-by-zero error and
QEMU process crash) via a large interval timer reload
value (bsc#1005004).
- CVE-2016-8669: The serial_update_parameters function in
hw/char/serial.c allowed local guest OS administrators
to cause a denial of service (divide-by-zero error and
QEMU process crash) via vectors involving a value of
divider greater than baud base (bsc#1005005).
- CVE-2016-7908: The mcf_fec_do_tx function in
hw/net/mcf_fec.c did not properly limit the buffer
descriptor count when transmitting packets, which
allowed local guest OS administrators to cause a denial
of service (infinite loop and QEMU process crash) via
vectors involving a buffer descriptor with a length of 0
and crafted values in bd.flags (bsc#1003030).
- CVE-2016-7909: The pcnet_rdra_addr function in
hw/net/pcnet.c allowed local guest OS administrators to
cause a denial of service (infinite loop and QEMU
process crash) by setting the (1) receive or (2)
transmit descriptor ring length to 0 (bsc#1003032).
These non-security issues were fixed :
- bsc#1004981: Xen RPM didn't contain debug hypervisor for
EFI systems
- bsc#1007941: Xen tools limited the number of vcpus to
256
This update was imported from the SUSE:SLE-12-SP2:Update update
project."
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1000106"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1003030"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1003032"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1004981"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1005004"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1005005"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1007157"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1007941"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1009100"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1009103"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1009104"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1009105"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1009107"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1009108"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1009109"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1009111"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1011652"
);
script_set_attribute(attribute:"solution", value:"Update the affected xen packages.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-debugsource");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-doc-html");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-libs-32bit");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-libs-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-libs-debuginfo-32bit");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-tools");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-tools-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-tools-domU");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-tools-domU-debuginfo");
script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:42.2");
script_set_attribute(attribute:"patch_publication_date", value:"2016/12/13");
script_set_attribute(attribute:"plugin_publication_date", value:"2016/12/16");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2016-2021 Tenable Network Security, Inc.");
script_family(english:"SuSE Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu");
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, "openSUSE");
if (release !~ "^(SUSE42\.2)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "42.2", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);
flag = 0;
if ( rpm_check(release:"SUSE42.2", reference:"xen-debugsource-4.7.1_02-3.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"xen-devel-4.7.1_02-3.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"xen-libs-4.7.1_02-3.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"xen-libs-debuginfo-4.7.1_02-3.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"xen-tools-domU-4.7.1_02-3.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"xen-tools-domU-debuginfo-4.7.1_02-3.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", cpu:"x86_64", reference:"xen-4.7.1_02-3.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", cpu:"x86_64", reference:"xen-doc-html-4.7.1_02-3.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", cpu:"x86_64", reference:"xen-libs-32bit-4.7.1_02-3.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", cpu:"x86_64", reference:"xen-libs-debuginfo-32bit-4.7.1_02-3.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", cpu:"x86_64", reference:"xen-tools-4.7.1_02-3.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", cpu:"x86_64", reference:"xen-tools-debuginfo-4.7.1_02-3.1") ) 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-debugsource / xen-devel / xen-libs-32bit / xen-libs / etc");
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7777
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7908
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7909
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-8667
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-8669
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-8910
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9377
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9378
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9379
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9380
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9381
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9382
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9383
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9384
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9385
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9386
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9637
bugzilla.opensuse.org/show_bug.cgi?id=1000106
bugzilla.opensuse.org/show_bug.cgi?id=1003030
bugzilla.opensuse.org/show_bug.cgi?id=1003032
bugzilla.opensuse.org/show_bug.cgi?id=1004981
bugzilla.opensuse.org/show_bug.cgi?id=1005004
bugzilla.opensuse.org/show_bug.cgi?id=1005005
bugzilla.opensuse.org/show_bug.cgi?id=1007157
bugzilla.opensuse.org/show_bug.cgi?id=1007941
bugzilla.opensuse.org/show_bug.cgi?id=1009100
bugzilla.opensuse.org/show_bug.cgi?id=1009103
bugzilla.opensuse.org/show_bug.cgi?id=1009104
bugzilla.opensuse.org/show_bug.cgi?id=1009105
bugzilla.opensuse.org/show_bug.cgi?id=1009107
bugzilla.opensuse.org/show_bug.cgi?id=1009108
bugzilla.opensuse.org/show_bug.cgi?id=1009109
bugzilla.opensuse.org/show_bug.cgi?id=1009111
bugzilla.opensuse.org/show_bug.cgi?id=1011652