SUSE SLES12 Security Update : xen (SUSE-SU-2019:0020-1)
High Nessus Plugin ID 120987
SynopsisThe remote SUSE host is missing one or more security updates.
DescriptionThis update for xen fixes the following issues :
Security vulnerabilities fixed :
CVE-2018-19961, CVE-2018-19962: Fixed an issue related to insufficient TLB flushing with AMD IOMMUs, which potentially allowed a guest to escalate its privileges, may cause a Denial of Service (DoS) affecting the entire host, or may be able to access data it is not supposed to access. (XSA-275) (bsc#1115040)
CVE-2018-19965: Fixed an issue related to the INVPCID instruction in case non-canonical addresses are accessed, which may allow a guest to cause Xen to crash, resulting in a Denial of Service (DoS) affecting the entire host. (XSA-279) (bsc#1115045)
CVE-2018-19966: Fixed an issue related to a previous fix for XSA-240, which conflicted with shadow paging and allowed a guest to cause Xen to crash, resulting in a Denial of Service (DoS). (XSA-280) (bsc#1115047)
CVE-2018-19665: Fixed an integer overflow resulting in memory corruption in various Bluetooth functions, allowing this to crash qemu process resulting in Denial of Service (DoS). (bsc#1117756).
CVE-2018-18849: Fixed an out of bounds memory access in the LSI53C895A SCSI host bus adapter emulation, which allowed a user and/or process to crash the qemu process resulting in a Denial of Service (DoS).
Other bugs fixed: Fixed an issue related to a domU hang on SLE12-SP3 HV (bsc#1108940)
Fixed an issue with xpti=no-dom0 not working as expected (bsc#1105528)
Fixed an issue with live migrations, which used to fail when spectre is enabled on xen boot cmdline (bsc#1116380)
Upstream bug fixes (bsc#1027519)
Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
SolutionTo 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 OpenStack Cloud 7:zypper in -t patch SUSE-OpenStack-Cloud-7-2019-20=1
SUSE Linux Enterprise Server for SAP 12-SP2:zypper in -t patch SUSE-SLE-SAP-12-SP2-2019-20=1
SUSE Linux Enterprise Server 12-SP2-LTSS:zypper in -t patch SUSE-SLE-SERVER-12-SP2-2019-20=1
SUSE Linux Enterprise Server 12-SP2-BCL:zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2019-20=1
SUSE Enterprise Storage 4:zypper in -t patch SUSE-Storage-4-2019-20=1