SUSE Security Update: Security update for xen ______________________________________________________________________________ Announcement ID: SUSE-SU-2018:1181-1 Rating: important References: #1027519 #1035442 #1057493 #1072834 #1083292 #1086107 #1089152 #1089635 #1090820 #1090822 #1090823 Cross-References: CVE-2018-10471 CVE-2018-10472 CVE-2018-7550 CVE-2018-8897 Affected Products: SUSE Linux Enterprise Software Development Kit 11-SP4 SUSE Linux Enterprise Server 11-SP4 SUSE Linux Enterprise Debuginfo 11-SP4 ______________________________________________________________________________ An update that solves four vulnerabilities and has 7 fixes is now available. Description: 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). - CVE-2018-7550: The load_multiboot function allowed local guest OS users to execute arbitrary code on the host via a mh_load_end_addr value greater than mh_bss_end_addr, which triggers an out-of-bounds read or write memory access (bsc#1083292). These non-security issues were fixed: - bsc#1072834: Prevent unchecked MSR access error - bsc#1035442: Increase the value of LIBXL_DESTROY_TIMEOUT from 10 to 100 seconds, allowing for more domUs to be shutdown in parallel - bsc#1057493: Prevent DomU crash Patch Instructions: To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: - SUSE Linux Enterprise Software Development Kit 11-SP4: zypper in -t patch sdksp4-xen-13593=1 - SUSE Linux Enterprise Server 11-SP4: zypper in -t patch slessp4-xen-13593=1 - SUSE Linux Enterprise Debuginfo 11-SP4: zypper in -t patch dbgsp4-xen-13593=1 Package List: - SUSE Linux Enterprise Software Development Kit 11-SP4 (i586 x86_64): xen-devel-4.4.4_30-61.26.1 - SUSE Linux Enterprise Server 11-SP4 (i586 x86_64): xen-kmp-default-4.4.4_30_3.0.101_108.38-61.26.1 xen-libs-4.4.4_30-61.26.1 xen-tools-domU-4.4.4_30-61.26.1 - SUSE Linux Enterprise Server 11-SP4 (x86_64): xen-4.4.4_30-61.26.1 xen-doc-html-4.4.4_30-61.26.1 xen-libs-32bit-4.4.4_30-61.26.1 xen-tools-4.4.4_30-61.26.1 - SUSE Linux Enterprise Server 11-SP4 (i586): xen-kmp-pae-4.4.4_30_3.0.101_108.38-61.26.1 - SUSE Linux Enterprise Debuginfo 11-SP4 (i586 x86_64): xen-debuginfo-4.4.4_30-61.26.1 xen-debugsource-4.4.4_30-61.26.1 References: https://www.suse.com/security/cve/CVE-2018-10471.html https://www.suse.com/security/cve/CVE-2018-10472.html https://www.suse.com/security/cve/CVE-2018-7550.html https://www.suse.com/security/cve/CVE-2018-8897.html https://bugzilla.suse.com/1027519 https://bugzilla.suse.com/1035442 https://bugzilla.suse.com/1057493 https://bugzilla.suse.com/1072834 https://bugzilla.suse.com/1083292 https://bugzilla.suse.com/1086107 https://bugzilla.suse.com/1089152 https://bugzilla.suse.com/1089635 https://bugzilla.suse.com/1090820 https://bugzilla.suse.com/1090822 https://bugzilla.suse.com/1090823 -- To unsubscribe, e-mail: opensuse-security-announce+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-security-announce+help@opensuse.org