SUSE Security Update: Security update for xen ______________________________________________________________________________
Announcement ID: SUSE-SU-2018:1203-1 Rating: important References: #1083292 #1089152 #1089635 #1090820 #1090822 #1090823 Cross-References: CVE-2018-10471 CVE-2018-10472 CVE-2018-7550 CVE-2018-8897 Affected Products: SUSE Linux Enterprise Server 11-SP3-LTSS SUSE Linux Enterprise Point of Sale 11-SP3 SUSE Linux Enterprise Debuginfo 11-SP3 ______________________________________________________________________________
An update that solves four vulnerabilities and has two 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).
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 Server 11-SP3-LTSS:
zypper in -t patch slessp3-xen-13595=1
- SUSE Linux Enterprise Point of Sale 11-SP3:
zypper in -t patch sleposp3-xen-13595=1
- SUSE Linux Enterprise Debuginfo 11-SP3:
zypper in -t patch dbgsp3-xen-13595=1
Package List:
- SUSE Linux Enterprise Server 11-SP3-LTSS (i586 x86_64):
xen-kmp-default-4.2.5_21_3.0.101_0.47.106.19-45.22.1 xen-libs-4.2.5_21-45.22.1 xen-tools-domU-4.2.5_21-45.22.1
- SUSE Linux Enterprise Server 11-SP3-LTSS (x86_64):
xen-4.2.5_21-45.22.1 xen-doc-html-4.2.5_21-45.22.1 xen-doc-pdf-4.2.5_21-45.22.1 xen-libs-32bit-4.2.5_21-45.22.1 xen-tools-4.2.5_21-45.22.1
- SUSE Linux Enterprise Server 11-SP3-LTSS (i586):
xen-kmp-pae-4.2.5_21_3.0.101_0.47.106.19-45.22.1
- SUSE Linux Enterprise Point of Sale 11-SP3 (i586):
xen-kmp-default-4.2.5_21_3.0.101_0.47.106.19-45.22.1 xen-kmp-pae-4.2.5_21_3.0.101_0.47.106.19-45.22.1 xen-libs-4.2.5_21-45.22.1 xen-tools-domU-4.2.5_21-45.22.1
- SUSE Linux Enterprise Debuginfo 11-SP3 (i586 x86_64):
xen-debuginfo-4.2.5_21-45.22.1 xen-debugsource-4.2.5_21-45.22.1
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/1083292 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