4.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
6.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
7.9 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
26.7%
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)
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 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).
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).
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 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).
Other issues fixed :
Upstream bug fixes (bsc#1027519)
Fixed an issue where setup of grant_tables and other variables may fail (bsc#1126325).
Added a requirement for xen, xl.cfg firmware='pvgrub32|pvgrub64 (bsc#1127620).
Added Xen cmdline option ‘suse_vtsc_tolerance’ to avoid TSC emulation for HVM domUs (bsc#1026236).
This update was imported from the SUSE:SLE-15: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-2019-1199.
#
# The text description of this plugin is (C) SUSE LLC.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(124141);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/03");
script_cve_id("CVE-2018-19967");
script_name(english:"openSUSE Security Update : xen (openSUSE-2019-1199)");
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)
- 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 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).
- 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).
- 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
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).
Other issues fixed :
- Upstream bug fixes (bsc#1027519)
- Fixed an issue where setup of grant_tables and other
variables may fail (bsc#1126325).
- Added a requirement for xen, xl.cfg
firmware='pvgrub32|pvgrub64 (bsc#1127620).
- Added Xen cmdline option 'suse_vtsc_tolerance' to avoid
TSC emulation for HVM domUs (bsc#1026236).
This update was imported from the SUSE:SLE-15: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=1114988");
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=1127620");
script_set_attribute(attribute:"solution", value:
"Update the affected xen packages.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:N/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:N/I:N/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-19967");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"vuln_publication_date", value:"2018/12/08");
script_set_attribute(attribute:"patch_publication_date", value:"2019/04/12");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/04/18");
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-32bit-debuginfo");
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:15.0");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"SuSE Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
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 !~ "^(SUSE15\.0)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "15.0", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);
flag = 0;
if ( rpm_check(release:"SUSE15.0", reference:"xen-debugsource-4.10.3_02-lp150.2.16.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"xen-devel-4.10.3_02-lp150.2.16.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"xen-libs-4.10.3_02-lp150.2.16.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"xen-libs-debuginfo-4.10.3_02-lp150.2.16.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"xen-tools-domU-4.10.3_02-lp150.2.16.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"xen-tools-domU-debuginfo-4.10.3_02-lp150.2.16.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"xen-4.10.3_02-lp150.2.16.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"xen-doc-html-4.10.3_02-lp150.2.16.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"xen-libs-32bit-4.10.3_02-lp150.2.16.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"xen-libs-32bit-debuginfo-4.10.3_02-lp150.2.16.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"xen-tools-4.10.3_02-lp150.2.16.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"xen-tools-debuginfo-4.10.3_02-lp150.2.16.1") ) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
else security_warning(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-debugsource | p-cpe:/a:novell:opensuse:xen-debugsource |
novell | opensuse | xen-libs-32bit | p-cpe:/a:novell:opensuse:xen-libs-32bit |
novell | opensuse | 15.0 | cpe:/o:novell:opensuse:15.0 |
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-debuginfo | p-cpe:/a:novell:opensuse:xen-libs-debuginfo |
novell | opensuse | xen-tools-domu-debuginfo | p-cpe:/a:novell:opensuse:xen-tools-domu-debuginfo |
novell | opensuse | xen | p-cpe:/a:novell:opensuse:xen |
novell | opensuse | xen-libs | p-cpe:/a:novell:opensuse:xen-libs |
novell | opensuse | xen-tools | p-cpe:/a:novell:opensuse:xen-tools |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19967
bugzilla.opensuse.org/show_bug.cgi?id=1026236
bugzilla.opensuse.org/show_bug.cgi?id=1027519
bugzilla.opensuse.org/show_bug.cgi?id=1114988
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=1127620
4.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
6.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
7.9 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
26.7%