SUSE Security Update: Security update for xen ______________________________________________________________________________

Announcement ID: SUSE-SU-2017:3239-1 Rating: important References: #1055047 #1056336 #1061075 #1061081 #1061086 #1063123 #1068187 #1068191 Cross-References: CVE-2017-13672 CVE-2017-15289 CVE-2017-15592 CVE-2017-15595 CVE-2017-15597 Affected Products: SUSE Linux Enterprise Server 12-LTSS ______________________________________________________________________________

An update that solves 5 vulnerabilities and has three fixes is now available.

Description:

This update for xen fixes several issues.

These security issues were fixed:

- bsc#1068187: Failure to recognize errors in the Populate on Demand (PoD) code allowed for DoS (XSA-246) - bsc#1068191: Missing p2m error checking in PoD code allowed unprivileged guests to retain a writable mapping of freed memory leading to information leaks, privilege escalation or DoS (XSA-247). - CVE-2017-15289: The mode4and5 write functions allowed local OS guest privileged users to cause a denial of service (out-of-bounds write access and Qemu process crash) via vectors related to dst calculation (bsc#1063123) - CVE-2017-15597: A grant copy operation being done on a grant of a dying domain allowed a malicious guest administrator to corrupt hypervisor memory, allowing for DoS or potentially privilege escalation and information leaks (bsc#1061075). - CVE-2017-15595: x86 PV guest OS users were able to cause a DoS (unbounded recursion, stack consumption, and hypervisor crash) or possibly gain privileges via crafted page-table stacking (bsc#1061081). - CVE-2017-15592: x86 HVM guest OS users were able to cause a DoS (hypervisor crash) or possibly gain privileges because self-linear shadow mappings were mishandled for translated guests (bsc#1061086). - CVE-2017-13672: The VGA display emulator support allowed local guest OS privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors involving display update (bsc#1056336)

This non-security issue was fixed:

- bsc#1055047: Fixed --initrd-inject option in virt-install

Patch Instructions:

To install this SUSE Security Update use YaST online_update. Alternatively you can run the command listed for your product:

- SUSE Linux Enterprise Server 12-LTSS:

zypper in -t patch SUSE-SLE-SERVER-12-2017-2019=1

To bring your system up-to-date, use "zypper patch".

Package List:

- SUSE Linux Enterprise Server 12-LTSS (x86_64):

xen-4.4.4_26-22.59.3 xen-debugsource-4.4.4_26-22.59.3 xen-doc-html-4.4.4_26-22.59.3 xen-kmp-default-4.4.4_26_k3.12.61_52.101-22.59.3 xen-kmp-default-debuginfo-4.4.4_26_k3.12.61_52.101-22.59.3 xen-libs-32bit-4.4.4_26-22.59.3 xen-libs-4.4.4_26-22.59.3 xen-libs-debuginfo-32bit-4.4.4_26-22.59.3 xen-libs-debuginfo-4.4.4_26-22.59.3 xen-tools-4.4.4_26-22.59.3 xen-tools-debuginfo-4.4.4_26-22.59.3 xen-tools-domU-4.4.4_26-22.59.3 xen-tools-domU-debuginfo-4.4.4_26-22.59.3

References:

https://www.suse.com/security/cve/CVE-2017-13672.html https://www.suse.com/security/cve/CVE-2017-15289.html https://www.suse.com/security/cve/CVE-2017-15592.html https://www.suse.com/security/cve/CVE-2017-15595.html https://www.suse.com/security/cve/CVE-2017-15597.html https://bugzilla.suse.com/1055047 https://bugzilla.suse.com/1056336 https://bugzilla.suse.com/1061075 https://bugzilla.suse.com/1061081 https://bugzilla.suse.com/1061086 https://bugzilla.suse.com/1063123 https://bugzilla.suse.com/1068187 https://bugzilla.suse.com/1068191