This update for xen to version 4.9.2 fixes several issues.
This feature was added :
These security issues were fixed :
CVE-2018-8897: Prevent mishandling of debug exceptions on x86 (XSA-260, bsc#1090820)
Handle HPET timers in IO-APIC mode correctly to prevent malicious or buggy HVM guests from causing a hypervisor crash or potentially privilege escalation/information leaks (XSA-261, bsc#1090822)
Prevent unbounded loop, induced by qemu allowing an attacker to permanently keep a physical CPU core busy (XSA-262, bsc#1090823)
CVE-2018-10472: x86 HVM guest OS users (in certain configurations) were able to read arbitrary dom0 files via QMP live insertion of a CDROM, in conjunction with specifying the target file as the backing file of a snapshot (bsc#1089152).
CVE-2018-10471: x86 PV guest OS users were able to cause a denial of service (out-of-bounds zero write and hypervisor crash) via unexpected INT 80 processing, because of an incorrect fix for CVE-2017-5754 (bsc#1089635).
CVE-2018-7540: x86 PV guest OS users were able to cause a denial of service (host OS CPU hang) via non-preemptable L3/L4 pagetable freeing (bsc#1080635).
CVE-2018-7541: Guest OS users were able to cause a denial of service (hypervisor crash) or gain privileges by triggering a grant-table transition from v2 to v1 (bsc#1080662).
CVE-2018-7542: x86 PVH guest OS users were able to cause a denial of service (NULL pointer dereference and hypervisor crash) by leveraging the mishandling of configurations that lack a Local APIC (bsc#1080634).
These non-security issues were fixed :
bsc#1087252: Update built-in defaults for xenstored in stubdom, keep default to run xenstored as daemon in dom0
bsc#1087251: Preserve xen-syms from xen-dbg.gz to allow processing vmcores with crash(1)
bsc#1072834: Prevent unchecked MSR access error This update was imported from the SUSE:SLE-12-SP3: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-2018-454.
#
# The text description of this plugin is (C) SUSE LLC.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(109751);
script_version("1.11");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/06/03");
script_cve_id("CVE-2017-5754", "CVE-2018-10471", "CVE-2018-10472", "CVE-2018-7540", "CVE-2018-7541", "CVE-2018-7542", "CVE-2018-8897");
script_xref(name:"IAVA", value:"2018-A-0019");
script_xref(name:"IAVB", value:"2018-B-0057-S");
script_name(english:"openSUSE Security Update : xen (openSUSE-2018-454) (Meltdown)");
script_summary(english:"Check for the openSUSE-2018-454 patch");
script_set_attribute(
attribute:"synopsis",
value:"The remote openSUSE host is missing a security update."
);
script_set_attribute(
attribute:"description",
value:
"This update for xen to version 4.9.2 fixes several issues.
This feature was added :
- Added script, udev rule and systemd service to watch for
vcpu online/offline events in a HVM domU. They are
triggered via 'xl vcpu-set domU N'
These security issues were fixed :
- CVE-2018-8897: Prevent mishandling of debug exceptions
on x86 (XSA-260, bsc#1090820)
- Handle HPET timers in IO-APIC mode correctly to prevent
malicious or buggy HVM guests from causing a hypervisor
crash or potentially privilege escalation/information
leaks (XSA-261, bsc#1090822)
- Prevent unbounded loop, induced by qemu allowing an
attacker to permanently keep a physical CPU core busy
(XSA-262, bsc#1090823)
- CVE-2018-10472: x86 HVM guest OS users (in certain
configurations) were able to read arbitrary dom0 files
via QMP live insertion of a CDROM, in conjunction with
specifying the target file as the backing file of a
snapshot (bsc#1089152).
- CVE-2018-10471: x86 PV guest OS users were able to cause
a denial of service (out-of-bounds zero write and
hypervisor crash) via unexpected INT 80 processing,
because of an incorrect fix for CVE-2017-5754
(bsc#1089635).
- CVE-2018-7540: x86 PV guest OS users were able to cause
a denial of service (host OS CPU hang) via
non-preemptable L3/L4 pagetable freeing (bsc#1080635).
- CVE-2018-7541: Guest OS users were able to cause a
denial of service (hypervisor crash) or gain privileges
by triggering a grant-table transition from v2 to v1
(bsc#1080662).
- CVE-2018-7542: x86 PVH guest OS users were able to cause
a denial of service (NULL pointer dereference and
hypervisor crash) by leveraging the mishandling of
configurations that lack a Local APIC (bsc#1080634).
These non-security issues were fixed :
- bsc#1087252: Update built-in defaults for xenstored in
stubdom, keep default to run xenstored as daemon in dom0
- bsc#1087251: Preserve xen-syms from xen-dbg.gz to allow
processing vmcores with crash(1)
- bsc#1072834: Prevent unchecked MSR access error This
update was imported from the SUSE:SLE-12-SP3:Update
update project."
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1027519"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1072834"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1080634"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1080635"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1080662"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1087251"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1087252"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1089152"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1089635"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1090820"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1090822"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1090823"
);
# https://features.opensuse.org/324965
script_set_attribute(
attribute:"see_also",
value:"https://features.opensuse.org/"
);
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_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC: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_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:"metasploit_name", value:'Microsoft Windows POP/MOV SS Local Privilege Elevation Vulnerability');
script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
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-debuginfo");
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:42.3");
script_set_attribute(attribute:"patch_publication_date", value:"2018/05/11");
script_set_attribute(attribute:"in_the_news", value:"true");
script_set_attribute(attribute:"plugin_publication_date", value:"2018/05/14");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2018-2021 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/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\.3)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "42.3", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(x86_64)$") audit(AUDIT_ARCH_NOT, "x86_64", ourarch);
flag = 0;
if ( rpm_check(release:"SUSE42.3", reference:"xen-4.9.2_04-19.2") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"xen-debugsource-4.9.2_04-19.2") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"xen-devel-4.9.2_04-19.2") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"xen-doc-html-4.9.2_04-19.2") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"xen-libs-4.9.2_04-19.2") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"xen-libs-debuginfo-4.9.2_04-19.2") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"xen-tools-4.9.2_04-19.2") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"xen-tools-debuginfo-4.9.2_04-19.2") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"xen-tools-domU-4.9.2_04-19.2") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"xen-tools-domU-debuginfo-4.9.2_04-19.2") ) 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 / xen-debugsource / xen-devel / xen-doc-html / xen-libs / etc");
}
Vendor | Product | Version | CPE |
---|---|---|---|
novell | opensuse | xen | p-cpe:/a:novell:opensuse:xen |
novell | opensuse | xen-debugsource | p-cpe:/a:novell:opensuse:xen-debugsource |
novell | opensuse | xen-devel | p-cpe:/a:novell:opensuse:xen-devel |
novell | opensuse | xen-doc-html | p-cpe:/a:novell:opensuse:xen-doc-html |
novell | opensuse | xen-libs | p-cpe:/a:novell:opensuse:xen-libs |
novell | opensuse | xen-libs-debuginfo | p-cpe:/a:novell:opensuse:xen-libs-debuginfo |
novell | opensuse | xen-tools | p-cpe:/a:novell:opensuse:xen-tools |
novell | opensuse | xen-tools-debuginfo | p-cpe:/a:novell:opensuse:xen-tools-debuginfo |
novell | opensuse | xen-tools-domu | p-cpe:/a:novell:opensuse:xen-tools-domu |
novell | opensuse | xen-tools-domu-debuginfo | p-cpe:/a:novell:opensuse:xen-tools-domu-debuginfo |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5754
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10471
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10472
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7540
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7541
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7542
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8897
bugzilla.opensuse.org/show_bug.cgi?id=1027519
bugzilla.opensuse.org/show_bug.cgi?id=1072834
bugzilla.opensuse.org/show_bug.cgi?id=1080634
bugzilla.opensuse.org/show_bug.cgi?id=1080635
bugzilla.opensuse.org/show_bug.cgi?id=1080662
bugzilla.opensuse.org/show_bug.cgi?id=1087251
bugzilla.opensuse.org/show_bug.cgi?id=1087252
bugzilla.opensuse.org/show_bug.cgi?id=1089152
bugzilla.opensuse.org/show_bug.cgi?id=1089635
bugzilla.opensuse.org/show_bug.cgi?id=1090820
bugzilla.opensuse.org/show_bug.cgi?id=1090822
bugzilla.opensuse.org/show_bug.cgi?id=1090823
features.opensuse.org/