openSUSE Security Update: Security update for xen ______________________________________________________________________________ Announcement ID: openSUSE-SU-2017:2394-1 Rating: important References: #1002573 #1026236 #1027519 #1035231 #1046637 #1049578 #1051787 #1051788 #1051789 #1052686 #1055695 Cross-References: CVE-2017-10664 CVE-2017-11434 CVE-2017-12135 CVE-2017-12136 CVE-2017-12137 CVE-2017-12855 Affected Products: openSUSE Leap 42.3 ______________________________________________________________________________ An update that solves 6 vulnerabilities and has 5 fixes is now available. Description: This update for xen fixes several issues. These security issues were fixed: - CVE-2017-12135: Unbounded recursion in grant table code allowed a malicious guest to crash the host or potentially escalate privileges/leak information (XSA-226, bsc#1051787). - CVE-2017-12137: Incorrectly-aligned updates to pagetables allowed for privilege escalation (XSA-227, bsc#1051788). - CVE-2017-12136: Race conditions with maptrack free list handling allows a malicious guest administrator to crash the host or escalate their privilege to that of the host (XSA-228, bsc#1051789). - CVE-2017-11434: The dhcp_decode function in slirp/bootp.c allowed local guest OS users to cause a denial of service (out-of-bounds read) via a crafted DHCP options string (bsc#1049578). - CVE-2017-10664: qemu-nbd did not ignore SIGPIPE, which allowed remote attackers to cause a denial of service (daemon crash) by disconnecting during a server-to-client reply attempt (bsc#1046637). - CVE-2017-12855: Premature clearing of GTF_writing / GTF_reading lead to potentially leaking sensitive information (XSA-230 bsc#1052686. These non-security issues were fixed: - bsc#1055695: XEN: 11SP4 and 12SP3 HVM guests can not be restored after the save using xl stack - bsc#1035231: Migration of HVM domU did not use superpages on destination dom0 - bsc#1002573: Optimized LVM functions in block-dmmd block-dmmd This update was imported from the SUSE:SLE-12-SP3:Update update project. Patch Instructions: To install this openSUSE Security Update use YaST online_update. Alternatively you can run the command listed for your product: - openSUSE Leap 42.3: zypper in -t patch openSUSE-2017-1023=1 To bring your system up-to-date, use "zypper patch". Package List: - openSUSE Leap 42.3 (x86_64): xen-4.9.0_11-4.1 xen-debugsource-4.9.0_11-4.1 xen-devel-4.9.0_11-4.1 xen-doc-html-4.9.0_11-4.1 xen-libs-4.9.0_11-4.1 xen-libs-debuginfo-4.9.0_11-4.1 xen-tools-4.9.0_11-4.1 xen-tools-debuginfo-4.9.0_11-4.1 xen-tools-domU-4.9.0_11-4.1 xen-tools-domU-debuginfo-4.9.0_11-4.1 References: https://www.suse.com/security/cve/CVE-2017-10664.html https://www.suse.com/security/cve/CVE-2017-11434.html https://www.suse.com/security/cve/CVE-2017-12135.html https://www.suse.com/security/cve/CVE-2017-12136.html https://www.suse.com/security/cve/CVE-2017-12137.html https://www.suse.com/security/cve/CVE-2017-12855.html https://bugzilla.suse.com/1002573 https://bugzilla.suse.com/1026236 https://bugzilla.suse.com/1027519 https://bugzilla.suse.com/1035231 https://bugzilla.suse.com/1046637 https://bugzilla.suse.com/1049578 https://bugzilla.suse.com/1051787 https://bugzilla.suse.com/1051788 https://bugzilla.suse.com/1051789 https://bugzilla.suse.com/1052686 https://bugzilla.suse.com/1055695