This update for xen fixes the following issues :
Security issues fixed :
CVE-2018-19967: Fixed HLE constructs that allowed guests to lock up the host, resulting in a Denial of Service (DoS). (XSA-282) (bsc#1114988)
CVE-2019-6778: Fixed a heap buffer overflow in tcp_emu() found in slirp (bsc#1123157).
Fixed an issue which could allow malicious or buggy guests with passed through PCI devices to be able to escalate their privileges, crash the host, or access data belonging to other guests. Additionally memory leaks were also possible (bsc#1126140).
Fixed a race condition issue which could allow malicious PV guests to escalate their privilege to that of the hypervisor (bsc#1126141).
Fixed an issue which could allow a malicious unprivileged guest userspace process to escalate its privilege to that of other userspace processes in the same guest and potentially thereby to that of the guest operating system (bsc#1126201).
CVE-2019-9824: Fixed an information leak in SLiRP networking implementation which could allow a user/process to read uninitialised stack memory contents (bsc#1129623).
CVE-2018-19961 CVE-2018-19962: Fixed insufficient TLB flushing / improper large page mappings with AMD IOMMUs (XSA-275)(bsc#1115040).
CVE-2018-19965: Fixed denial of service issue from attempting to use INVPCID with a non-canonical addresses (XSA-279)(bsc#1115045).
CVE-2018-19966: Fixed issue introduced by XSA-240 that could have caused conflicts with shadow paging (XSA-280)(bsc#1115047).
Fixed an issue which could allow malicious PV guests may cause a host crash or gain access to data pertaining to other guests.Additionally, vulnerable configurations are likely to be unstable even in the absence of an attack (bsc#1126198).
Fixed multiple access violations introduced by XENMEM_exchange hypercall which could allow a single PV guest to leak arbitrary amounts of memory, leading to a denial of service (bsc#1126192).
Fixed an issue which could allow malicious 64bit PV guests to cause a host crash (bsc#1127400).
Fixed an issue which could allow malicious or buggy x86 PV guest kernels to mount a Denial of Service attack affecting the whole system (bsc#1126197).
Fixed an issue which could allow an untrusted PV domain with access to a physical device to DMA into its own pagetables leading to privilege escalation (bsc#1126195).
Fixed an issue which could allow a malicious or buggy x86 PV guest kernels can mount a Denial of Service attack affecting the whole system (bsc#1126196).
Other issues addressed :
Upstream bug fixes (bsc#1027519)
Fixed an issue where live migrations were failing when spectre was enabled on xen boot cmdline (bsc#1116380).
Fixed an issue where setup of grant_tables and other variables may fail (bsc#1126325).
Fixed a building issue (bsc#1119161).
Fixed an issue where xpti=no-dom0 was not working as expected (bsc#1105528).
Packages should no longer use /var/adm/fillup-templates (bsc#1069468).
Added Xen cmdline option ‘suse_vtsc_tolerance’ to avoid TSC emulation for HVM domUs (bsc#1026236).
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-2019-1226.
#
# The text description of this plugin is (C) SUSE LLC.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(124147);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");
script_cve_id("CVE-2018-19665", "CVE-2018-19961", "CVE-2018-19962", "CVE-2018-19965", "CVE-2018-19966", "CVE-2018-19967", "CVE-2019-6778", "CVE-2019-9824");
script_name(english:"openSUSE Security Update : xen (openSUSE-2019-1226)");
script_summary(english:"Check for the openSUSE-2019-1226 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 fixes the following issues :
Security issues fixed :
- CVE-2018-19967: Fixed HLE constructs that allowed guests
to lock up the host, resulting in a Denial of Service
(DoS). (XSA-282) (bsc#1114988)
- CVE-2019-6778: Fixed a heap buffer overflow in tcp_emu()
found in slirp (bsc#1123157).
- Fixed an issue which could allow malicious or buggy
guests with passed through PCI devices to be able to
escalate their privileges, crash the host, or access
data belonging to other guests. Additionally memory
leaks were also possible (bsc#1126140).
- Fixed a race condition issue which could allow malicious
PV guests to escalate their privilege to that of the
hypervisor (bsc#1126141).
- Fixed an issue which could allow a malicious
unprivileged guest userspace process to escalate its
privilege to that of other userspace processes in the
same guest and potentially thereby to that of the guest
operating system (bsc#1126201).
- CVE-2019-9824: Fixed an information leak in SLiRP
networking implementation which could allow a
user/process to read uninitialised stack memory contents
(bsc#1129623).
- CVE-2018-19961 CVE-2018-19962: Fixed insufficient TLB
flushing / improper large page mappings with AMD IOMMUs
(XSA-275)(bsc#1115040).
- CVE-2018-19965: Fixed denial of service issue from
attempting to use INVPCID with a non-canonical addresses
(XSA-279)(bsc#1115045).
- CVE-2018-19966: Fixed issue introduced by XSA-240 that
could have caused conflicts with shadow paging
(XSA-280)(bsc#1115047).
- Fixed an issue which could allow malicious PV guests may
cause a host crash or gain access to data pertaining to
other guests.Additionally, vulnerable configurations are
likely to be unstable even in the absence of an attack
(bsc#1126198).
- Fixed multiple access violations introduced by
XENMEM_exchange hypercall which could allow a single PV
guest to leak arbitrary amounts of memory, leading to a
denial of service (bsc#1126192).
- Fixed an issue which could allow malicious 64bit PV
guests to cause a host crash (bsc#1127400).
- Fixed an issue which could allow malicious or buggy x86
PV guest kernels to mount a Denial of Service attack
affecting the whole system (bsc#1126197).
- Fixed an issue which could allow an untrusted PV domain
with access to a physical device to DMA into its own
pagetables leading to privilege escalation
(bsc#1126195).
- Fixed an issue which could allow a malicious or buggy
x86 PV guest kernels can mount a Denial of Service
attack affecting the whole system (bsc#1126196).
Other issues addressed :
- Upstream bug fixes (bsc#1027519)
- Fixed an issue where live migrations were failing when
spectre was enabled on xen boot cmdline (bsc#1116380).
- Fixed an issue where setup of grant_tables and other
variables may fail (bsc#1126325).
- Fixed a building issue (bsc#1119161).
- Fixed an issue where xpti=no-dom0 was not working as
expected (bsc#1105528).
- Packages should no longer use /var/adm/fillup-templates
(bsc#1069468).
- Added Xen cmdline option 'suse_vtsc_tolerance' to avoid
TSC emulation for HVM domUs (bsc#1026236).
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=1026236"
);
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=1069468"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1105528"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1114988"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1115040"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1115045"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1115047"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1116380"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1117756"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1119161"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1123157"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1126140"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1126141"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1126192"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1126195"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1126196"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1126197"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1126198"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1126201"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1126325"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1127400"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1129623"
);
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:U/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:U/RL:O/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
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:42.3");
script_set_attribute(attribute:"vuln_publication_date", value:"2018/12/06");
script_set_attribute(attribute:"patch_publication_date", value:"2019/04/17");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/04/18");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2019-2021 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)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "42.3", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);
flag = 0;
if ( rpm_check(release:"SUSE42.3", reference:"xen-debugsource-4.9.4_02-37.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"xen-devel-4.9.4_02-37.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"xen-libs-4.9.4_02-37.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"xen-libs-debuginfo-4.9.4_02-37.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"xen-tools-domU-4.9.4_02-37.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"xen-tools-domU-debuginfo-4.9.4_02-37.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"xen-4.9.4_02-37.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"xen-doc-html-4.9.4_02-37.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"xen-libs-32bit-4.9.4_02-37.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"xen-libs-debuginfo-32bit-4.9.4_02-37.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"xen-tools-4.9.4_02-37.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"xen-tools-debuginfo-4.9.4_02-37.1") ) 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-2018-19665
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19961
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19962
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19965
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19966
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19967
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6778
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9824
bugzilla.opensuse.org/show_bug.cgi?id=1026236
bugzilla.opensuse.org/show_bug.cgi?id=1027519
bugzilla.opensuse.org/show_bug.cgi?id=1069468
bugzilla.opensuse.org/show_bug.cgi?id=1105528
bugzilla.opensuse.org/show_bug.cgi?id=1114988
bugzilla.opensuse.org/show_bug.cgi?id=1115040
bugzilla.opensuse.org/show_bug.cgi?id=1115045
bugzilla.opensuse.org/show_bug.cgi?id=1115047
bugzilla.opensuse.org/show_bug.cgi?id=1116380
bugzilla.opensuse.org/show_bug.cgi?id=1117756
bugzilla.opensuse.org/show_bug.cgi?id=1119161
bugzilla.opensuse.org/show_bug.cgi?id=1123157
bugzilla.opensuse.org/show_bug.cgi?id=1126140
bugzilla.opensuse.org/show_bug.cgi?id=1126141
bugzilla.opensuse.org/show_bug.cgi?id=1126192
bugzilla.opensuse.org/show_bug.cgi?id=1126195
bugzilla.opensuse.org/show_bug.cgi?id=1126196
bugzilla.opensuse.org/show_bug.cgi?id=1126197
bugzilla.opensuse.org/show_bug.cgi?id=1126198
bugzilla.opensuse.org/show_bug.cgi?id=1126201
bugzilla.opensuse.org/show_bug.cgi?id=1126325
bugzilla.opensuse.org/show_bug.cgi?id=1127400
bugzilla.opensuse.org/show_bug.cgi?id=1129623