Security update for xen SUSE Patch security@suse.de SUSE Security Team openSUSE-SU-2017:2394-1 Final 1 1 2017-09-08T15:16:07Z current 2017-09-08T15:16:07Z 2017-09-08T15:16:07Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for xen 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. The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://lists.opensuse.org/opensuse-security-announce/2017-09/msg00023.html E-Mail link for openSUSE-SU-2017:2394-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings openSUSE Leap 42.3 xen-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-tools-4.9.0_11-4.1 xen-tools-domU-4.9.0_11-4.1 xen-4.9.0_11-4.1 as a component of openSUSE Leap 42.3 xen-devel-4.9.0_11-4.1 as a component of openSUSE Leap 42.3 xen-doc-html-4.9.0_11-4.1 as a component of openSUSE Leap 42.3 xen-libs-4.9.0_11-4.1 as a component of openSUSE Leap 42.3 xen-tools-4.9.0_11-4.1 as a component of openSUSE Leap 42.3 xen-tools-domU-4.9.0_11-4.1 as a component of openSUSE Leap 42.3 qemu-nbd in QEMU (aka Quick Emulator) does not ignore SIGPIPE, which allows remote attackers to cause a denial of service (daemon crash) by disconnecting during a server-to-client reply attempt. CVE-2017-10664 openSUSE Leap 42.3:xen-4.9.0_11-4.1 openSUSE Leap 42.3:xen-devel-4.9.0_11-4.1 openSUSE Leap 42.3:xen-doc-html-4.9.0_11-4.1 openSUSE Leap 42.3:xen-libs-4.9.0_11-4.1 openSUSE Leap 42.3:xen-tools-4.9.0_11-4.1 openSUSE Leap 42.3:xen-tools-domU-4.9.0_11-4.1 moderate 5 AV:N/AC:L/Au:N/C:N/I:N/A:P Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2017-09/msg00023.html https://www.suse.com/security/cve/CVE-2017-10664.html CVE-2017-10664 https://bugzilla.suse.com/1046636 SUSE Bug 1046636 https://bugzilla.suse.com/1046637 SUSE Bug 1046637 https://bugzilla.suse.com/1178658 SUSE Bug 1178658 The dhcp_decode function in slirp/bootp.c in QEMU (aka Quick Emulator) allows local guest OS users to cause a denial of service (out-of-bounds read and QEMU process crash) via a crafted DHCP options string. CVE-2017-11434 openSUSE Leap 42.3:xen-4.9.0_11-4.1 openSUSE Leap 42.3:xen-devel-4.9.0_11-4.1 openSUSE Leap 42.3:xen-doc-html-4.9.0_11-4.1 openSUSE Leap 42.3:xen-libs-4.9.0_11-4.1 openSUSE Leap 42.3:xen-tools-4.9.0_11-4.1 openSUSE Leap 42.3:xen-tools-domU-4.9.0_11-4.1 moderate 4.7 AV:L/AC:M/Au:N/C:N/I:N/A:C Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2017-09/msg00023.html https://www.suse.com/security/cve/CVE-2017-11434.html CVE-2017-11434 https://bugzilla.suse.com/1049381 SUSE Bug 1049381 https://bugzilla.suse.com/1049578 SUSE Bug 1049578 https://bugzilla.suse.com/1178658 SUSE Bug 1178658 Xen allows local OS guest users to cause a denial of service (crash) or possibly obtain sensitive information or gain privileges via vectors involving transitive grants. CVE-2017-12135 openSUSE Leap 42.3:xen-4.9.0_11-4.1 openSUSE Leap 42.3:xen-devel-4.9.0_11-4.1 openSUSE Leap 42.3:xen-doc-html-4.9.0_11-4.1 openSUSE Leap 42.3:xen-libs-4.9.0_11-4.1 openSUSE Leap 42.3:xen-tools-4.9.0_11-4.1 openSUSE Leap 42.3:xen-tools-domU-4.9.0_11-4.1 moderate 5.2 AV:L/AC:H/Au:N/C:P/I:P/A:C Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2017-09/msg00023.html https://www.suse.com/security/cve/CVE-2017-12135.html CVE-2017-12135 https://bugzilla.suse.com/1051787 SUSE Bug 1051787 https://bugzilla.suse.com/1169392 SUSE Bug 1169392 https://bugzilla.suse.com/1178658 SUSE Bug 1178658 Race condition in the grant table code in Xen 4.6.x through 4.9.x allows local guest OS administrators to cause a denial of service (free list corruption and host crash) or gain privileges on the host via vectors involving maptrack free list handling. CVE-2017-12136 openSUSE Leap 42.3:xen-4.9.0_11-4.1 openSUSE Leap 42.3:xen-devel-4.9.0_11-4.1 openSUSE Leap 42.3:xen-doc-html-4.9.0_11-4.1 openSUSE Leap 42.3:xen-libs-4.9.0_11-4.1 openSUSE Leap 42.3:xen-tools-4.9.0_11-4.1 openSUSE Leap 42.3:xen-tools-domU-4.9.0_11-4.1 moderate 6.2 AV:L/AC:H/Au:N/C:C/I:C/A:C Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2017-09/msg00023.html https://www.suse.com/security/cve/CVE-2017-12136.html CVE-2017-12136 https://bugzilla.suse.com/1051789 SUSE Bug 1051789 arch/x86/mm.c in Xen allows local PV guest OS users to gain host OS privileges via vectors related to map_grant_ref. CVE-2017-12137 openSUSE Leap 42.3:xen-4.9.0_11-4.1 openSUSE Leap 42.3:xen-devel-4.9.0_11-4.1 openSUSE Leap 42.3:xen-doc-html-4.9.0_11-4.1 openSUSE Leap 42.3:xen-libs-4.9.0_11-4.1 openSUSE Leap 42.3:xen-tools-4.9.0_11-4.1 openSUSE Leap 42.3:xen-tools-domU-4.9.0_11-4.1 moderate 6.2 AV:L/AC:H/Au:N/C:C/I:C/A:C Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2017-09/msg00023.html https://www.suse.com/security/cve/CVE-2017-12137.html CVE-2017-12137 https://bugzilla.suse.com/1051788 SUSE Bug 1051788 https://bugzilla.suse.com/1178658 SUSE Bug 1178658 Xen maintains the _GTF_{read,writ}ing bits as appropriate, to inform the guest that a grant is in use. A guest is expected not to modify the grant details while it is in use, whereas the guest is free to modify/reuse the grant entry when it is not in use. Under some circumstances, Xen will clear the status bits too early, incorrectly informing the guest that the grant is no longer in use. A guest may prematurely believe that a granted frame is safely private again, and reuse it in a way which contains sensitive information, while the domain on the far end of the grant is still using the grant. Xen 4.9, 4.8, 4.7, 4.6, and 4.5 are affected. CVE-2017-12855 openSUSE Leap 42.3:xen-4.9.0_11-4.1 openSUSE Leap 42.3:xen-devel-4.9.0_11-4.1 openSUSE Leap 42.3:xen-doc-html-4.9.0_11-4.1 openSUSE Leap 42.3:xen-libs-4.9.0_11-4.1 openSUSE Leap 42.3:xen-tools-4.9.0_11-4.1 openSUSE Leap 42.3:xen-tools-domU-4.9.0_11-4.1 moderate Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2017-09/msg00023.html https://www.suse.com/security/cve/CVE-2017-12855.html CVE-2017-12855 https://bugzilla.suse.com/1052686 SUSE Bug 1052686 https://bugzilla.suse.com/1178658 SUSE Bug 1178658