Security update for xen SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2018:3230-1 Final 1 1 2018-10-18T12:44:39Z current 2018-10-18T12:44:39Z 2018-10-18T12:44:39Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for xen This update for xen fixes several issues. 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). These non-security issues were fixed: - bsc#1086039: Ensure that Dom0 does represent DomU cpu flags correctly - bsc#1027519: Fixed shadow mode guests The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-SLE-SERVER-12-SP2-BCL-2018-841 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2018/suse-su-20183230-1/ Link for SUSE-SU-2018:3230-1 https://lists.suse.com/pipermail/sle-security-updates/2018-October/004740.html E-Mail link for SUSE-SU-2018:3230-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1027519 SUSE Bug 1027519 https://bugzilla.suse.com/1086039 SUSE Bug 1086039 https://bugzilla.suse.com/1089152 SUSE Bug 1089152 https://bugzilla.suse.com/1089635 SUSE Bug 1089635 https://bugzilla.suse.com/1090820 SUSE Bug 1090820 https://bugzilla.suse.com/1090822 SUSE Bug 1090822 https://bugzilla.suse.com/1090823 SUSE Bug 1090823 https://www.suse.com/security/cve/CVE-2017-5754/ SUSE CVE CVE-2017-5754 page https://www.suse.com/security/cve/CVE-2018-10471/ SUSE CVE CVE-2018-10471 page https://www.suse.com/security/cve/CVE-2018-10472/ SUSE CVE CVE-2018-10472 page https://www.suse.com/security/cve/CVE-2018-8897/ SUSE CVE CVE-2018-8897 page SUSE Linux Enterprise Server 12 SP2-BCL xen-4.7.5_02-43.30.1 xen-doc-html-4.7.5_02-43.30.1 xen-libs-4.7.5_02-43.30.1 xen-libs-32bit-4.7.5_02-43.30.1 xen-tools-4.7.5_02-43.30.1 xen-tools-domU-4.7.5_02-43.30.1 xen-4.7.5_02-43.30.1 as a component of SUSE Linux Enterprise Server 12 SP2-BCL xen-doc-html-4.7.5_02-43.30.1 as a component of SUSE Linux Enterprise Server 12 SP2-BCL xen-libs-4.7.5_02-43.30.1 as a component of SUSE Linux Enterprise Server 12 SP2-BCL xen-libs-32bit-4.7.5_02-43.30.1 as a component of SUSE Linux Enterprise Server 12 SP2-BCL xen-tools-4.7.5_02-43.30.1 as a component of SUSE Linux Enterprise Server 12 SP2-BCL xen-tools-domU-4.7.5_02-43.30.1 as a component of SUSE Linux Enterprise Server 12 SP2-BCL Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis of the data cache. CVE-2017-5754 SUSE Linux Enterprise Server 12 SP2-BCL:xen-4.7.5_02-43.30.1 SUSE Linux Enterprise Server 12 SP2-BCL:xen-doc-html-4.7.5_02-43.30.1 SUSE Linux Enterprise Server 12 SP2-BCL:xen-libs-32bit-4.7.5_02-43.30.1 SUSE Linux Enterprise Server 12 SP2-BCL:xen-libs-4.7.5_02-43.30.1 SUSE Linux Enterprise Server 12 SP2-BCL:xen-tools-4.7.5_02-43.30.1 SUSE Linux Enterprise Server 12 SP2-BCL:xen-tools-domU-4.7.5_02-43.30.1 important 4.9 AV:L/AC:L/Au:N/C:C/I:N/A:N To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2018/suse-su-20183230-1/ https://www.suse.com/security/cve/CVE-2017-5754.html CVE-2017-5754 https://bugzilla.suse.com/1068032 SUSE Bug 1068032 https://bugzilla.suse.com/1074562 SUSE Bug 1074562 https://bugzilla.suse.com/1074578 SUSE Bug 1074578 https://bugzilla.suse.com/1074701 SUSE Bug 1074701 https://bugzilla.suse.com/1075006 SUSE Bug 1075006 https://bugzilla.suse.com/1075008 SUSE Bug 1075008 https://bugzilla.suse.com/1087939 SUSE Bug 1087939 https://bugzilla.suse.com/1089055 SUSE Bug 1089055 https://bugzilla.suse.com/1115045 SUSE Bug 1115045 https://bugzilla.suse.com/1136865 SUSE Bug 1136865 https://bugzilla.suse.com/1178658 SUSE Bug 1178658 https://bugzilla.suse.com/1201877 SUSE Bug 1201877 An issue was discovered in Xen through 4.10.x allowing x86 PV guest OS users 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. CVE-2018-10471 SUSE Linux Enterprise Server 12 SP2-BCL:xen-4.7.5_02-43.30.1 SUSE Linux Enterprise Server 12 SP2-BCL:xen-doc-html-4.7.5_02-43.30.1 SUSE Linux Enterprise Server 12 SP2-BCL:xen-libs-32bit-4.7.5_02-43.30.1 SUSE Linux Enterprise Server 12 SP2-BCL:xen-libs-4.7.5_02-43.30.1 SUSE Linux Enterprise Server 12 SP2-BCL:xen-tools-4.7.5_02-43.30.1 SUSE Linux Enterprise Server 12 SP2-BCL:xen-tools-domU-4.7.5_02-43.30.1 moderate To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2018/suse-su-20183230-1/ https://www.suse.com/security/cve/CVE-2018-10471.html CVE-2018-10471 https://bugzilla.suse.com/1089635 SUSE Bug 1089635 https://bugzilla.suse.com/1178658 SUSE Bug 1178658 An issue was discovered in Xen through 4.10.x allowing x86 HVM guest OS users (in certain configurations) 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. CVE-2018-10472 SUSE Linux Enterprise Server 12 SP2-BCL:xen-4.7.5_02-43.30.1 SUSE Linux Enterprise Server 12 SP2-BCL:xen-doc-html-4.7.5_02-43.30.1 SUSE Linux Enterprise Server 12 SP2-BCL:xen-libs-32bit-4.7.5_02-43.30.1 SUSE Linux Enterprise Server 12 SP2-BCL:xen-libs-4.7.5_02-43.30.1 SUSE Linux Enterprise Server 12 SP2-BCL:xen-tools-4.7.5_02-43.30.1 SUSE Linux Enterprise Server 12 SP2-BCL:xen-tools-domU-4.7.5_02-43.30.1 moderate To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2018/suse-su-20183230-1/ https://www.suse.com/security/cve/CVE-2018-10472.html CVE-2018-10472 https://bugzilla.suse.com/1089152 SUSE Bug 1089152 A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures Software Developer's Manual (SDM) was mishandled in the development of some or all operating-system kernels, resulting in unexpected behavior for #DB exceptions that are deferred by MOV SS or POP SS, as demonstrated by (for example) privilege escalation in Windows, macOS, some Xen configurations, or FreeBSD, or a Linux kernel crash. The MOV to SS and POP SS instructions inhibit interrupts (including NMIs), data breakpoints, and single step trap exceptions until the instruction boundary following the next instruction (SDM Vol. 3A; section 6.8.3). (The inhibited data breakpoints are those on memory accessed by the MOV to SS or POP to SS instruction itself.) Note that debug exceptions are not inhibited by the interrupt enable (EFLAGS.IF) system flag (SDM Vol. 3A; section 2.3). If the instruction following the MOV to SS or POP to SS instruction is an instruction like SYSCALL, SYSENTER, INT 3, etc. that transfers control to the operating system at CPL < 3, the debug exception is delivered after the transfer to CPL < 3 is complete. OS kernels may not expect this order of events and may therefore experience unexpected behavior when it occurs. CVE-2018-8897 SUSE Linux Enterprise Server 12 SP2-BCL:xen-4.7.5_02-43.30.1 SUSE Linux Enterprise Server 12 SP2-BCL:xen-doc-html-4.7.5_02-43.30.1 SUSE Linux Enterprise Server 12 SP2-BCL:xen-libs-32bit-4.7.5_02-43.30.1 SUSE Linux Enterprise Server 12 SP2-BCL:xen-libs-4.7.5_02-43.30.1 SUSE Linux Enterprise Server 12 SP2-BCL:xen-tools-4.7.5_02-43.30.1 SUSE Linux Enterprise Server 12 SP2-BCL:xen-tools-domU-4.7.5_02-43.30.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2018/suse-su-20183230-1/ https://www.suse.com/security/cve/CVE-2018-8897.html CVE-2018-8897 https://bugzilla.suse.com/1087078 SUSE Bug 1087078 https://bugzilla.suse.com/1087088 SUSE Bug 1087088 https://bugzilla.suse.com/1090368 SUSE Bug 1090368 https://bugzilla.suse.com/1090820 SUSE Bug 1090820 https://bugzilla.suse.com/1090869 SUSE Bug 1090869 https://bugzilla.suse.com/1092497 SUSE Bug 1092497 https://bugzilla.suse.com/1093522 SUSE Bug 1093522 https://bugzilla.suse.com/1093524 SUSE Bug 1093524 https://bugzilla.suse.com/1098813 SUSE Bug 1098813 https://bugzilla.suse.com/1100835 SUSE Bug 1100835 https://bugzilla.suse.com/1115893 SUSE Bug 1115893 https://bugzilla.suse.com/1178658 SUSE Bug 1178658