Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.2973 SUSE Security Update: Security update for xen 15 December 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: xen Publisher: SUSE Operating System: Xen Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Increased Privileges -- Existing Account Delete Arbitrary Files -- Existing Account Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2016-9637 CVE-2016-9386 CVE-2016-9385 CVE-2016-9383 CVE-2016-9382 CVE-2016-9381 CVE-2016-9380 CVE-2016-9379 CVE-2016-8910 CVE-2016-8909 CVE-2016-8669 CVE-2016-8667 CVE-2016-8576 CVE-2016-7909 CVE-2016-7908 CVE-2016-7777 Reference: ESB-2016.2919 ESB-2016.2907 ESB-2016.2876 - --------------------------BEGIN INCLUDED TEXT-------------------- SUSE Security Update: Security update for xen ______________________________________________________________________________ Announcement ID: SUSE-SU-2016:3156-1 Rating: important References: #1000106 #1003030 #1003032 #1004016 #1005004 #1005005 #1007157 #1007160 #1009100 #1009103 #1009104 #1009107 #1009109 #1009111 #1011652 #953518 Cross-References: CVE-2016-7777 CVE-2016-7908 CVE-2016-7909 CVE-2016-8576 CVE-2016-8667 CVE-2016-8669 CVE-2016-8909 CVE-2016-8910 CVE-2016-9379 CVE-2016-9380 CVE-2016-9381 CVE-2016-9382 CVE-2016-9383 CVE-2016-9385 CVE-2016-9386 CVE-2016-9637 Affected Products: SUSE Linux Enterprise Server for SAP 12 SUSE Linux Enterprise Server 12-LTSS ______________________________________________________________________________ An update that fixes 16 vulnerabilities is now available. Description: This update for xen fixes several issues. These security issues were fixed: - CVE-2016-9637: ioport array overflow allowing a malicious guest administrator can escalate their privilege to that of the host (bsc#1011652) - CVE-2016-9386: x86 null segments were not always treated as unusable allowing an unprivileged guest user program to elevate its privilege to that of the guest operating system. Exploit of this vulnerability is easy on Intel and more complicated on AMD (bsc#1009100) - CVE-2016-9382: x86 task switch to VM86 mode was mis-handled, allowing a unprivileged guest process to escalate its privilege to that of the guest operating system on AMD hardware. On Intel hardware a malicious unprivileged guest process can crash the guest (bsc#1009103) - CVE-2016-9385: x86 segment base write emulation lacked canonical address checks, allowing a malicious guest administrator to crash the host (bsc#1009104) - CVE-2016-9383: The x86 64-bit bit test instruction emulation was broken, allowing a guest to modify arbitrary memory leading to arbitray code execution (bsc#1009107) - CVE-2016-9381: Improper processing of shared rings allowing guest administrators take over the qemu process, elevating their privilege to that of the qemu process (bsc#1009109) - CVE-2016-9380: Delimiter injection vulnerabilities in pygrub allowed guest administrators to obtain the contents of sensitive host files or delete the files (bsc#1009111) - CVE-2016-9379: Delimiter injection vulnerabilities in pygrub allowed guest administrators to obtain the contents of sensitive host files or delete the files (bsc#1009111) - CVE-2016-7777: Xen did not properly honor CR0.TS and CR0.EM, which allowed local x86 HVM guest OS users to read or modify FPU, MMX, or XMM register state information belonging to arbitrary tasks on the guest by modifying an instruction while the hypervisor is preparing to emulate it (bsc#1000106) - CVE-2016-8910: The rtl8139_cplus_transmit function in hw/net/rtl8139.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) by leveraging failure to limit the ring descriptor count (bsc#1007157) - CVE-2016-8909: The intel_hda_xfer function in hw/audio/intel-hda.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) via an entry with the same value for buffer length and pointer position (bsc#1007160) - CVE-2016-8667: The rc4030_write function in hw/dma/rc4030.c in allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via a large interval timer reload value (bsc#1005004) - CVE-2016-8669: The serial_update_parameters function in hw/char/serial.c allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via vectors involving a value of divider greater than baud base (bsc#1005005) - CVE-2016-8576: The xhci_ring_fetch function in hw/usb/hcd-xhci.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by leveraging failure to limit the number of link Transfer Request Blocks (TRB) to process (bsc#1004016) - CVE-2016-7908: The mcf_fec_do_tx function in hw/net/mcf_fec.c did not properly limit the buffer descriptor count when transmitting packets, which allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags (bsc#1003030) - CVE-2016-7909: The pcnet_rdra_addr function in hw/net/pcnet.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by setting the (1) receive or (2) transmit descriptor ring length to 0 (bsc#1003032) These non-security issues were fixed: - bsc#953518: Unplug also SCSI disks in qemu-xen-traditional for upstream unplug protocol - bsc#953518: Unplug also SCSI disks in qemu-xen 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 for SAP 12: zypper in -t patch SUSE-SLE-SAP-12-2016-1825=1 - SUSE Linux Enterprise Server 12-LTSS: zypper in -t patch SUSE-SLE-SERVER-12-2016-1825=1 To bring your system up-to-date, use "zypper patch". Package List: - SUSE Linux Enterprise Server for SAP 12 (x86_64): xen-4.4.4_05-22.25.1 xen-debugsource-4.4.4_05-22.25.1 xen-doc-html-4.4.4_05-22.25.1 xen-kmp-default-4.4.4_05_k3.12.60_52.57-22.25.1 xen-kmp-default-debuginfo-4.4.4_05_k3.12.60_52.57-22.25.1 xen-libs-32bit-4.4.4_05-22.25.1 xen-libs-4.4.4_05-22.25.1 xen-libs-debuginfo-32bit-4.4.4_05-22.25.1 xen-libs-debuginfo-4.4.4_05-22.25.1 xen-tools-4.4.4_05-22.25.1 xen-tools-debuginfo-4.4.4_05-22.25.1 xen-tools-domU-4.4.4_05-22.25.1 xen-tools-domU-debuginfo-4.4.4_05-22.25.1 - SUSE Linux Enterprise Server 12-LTSS (x86_64): xen-4.4.4_05-22.25.1 xen-debugsource-4.4.4_05-22.25.1 xen-doc-html-4.4.4_05-22.25.1 xen-kmp-default-4.4.4_05_k3.12.60_52.57-22.25.1 xen-kmp-default-debuginfo-4.4.4_05_k3.12.60_52.57-22.25.1 xen-libs-32bit-4.4.4_05-22.25.1 xen-libs-4.4.4_05-22.25.1 xen-libs-debuginfo-32bit-4.4.4_05-22.25.1 xen-libs-debuginfo-4.4.4_05-22.25.1 xen-tools-4.4.4_05-22.25.1 xen-tools-debuginfo-4.4.4_05-22.25.1 xen-tools-domU-4.4.4_05-22.25.1 xen-tools-domU-debuginfo-4.4.4_05-22.25.1 References: https://www.suse.com/security/cve/CVE-2016-7777.html https://www.suse.com/security/cve/CVE-2016-7908.html https://www.suse.com/security/cve/CVE-2016-7909.html https://www.suse.com/security/cve/CVE-2016-8576.html https://www.suse.com/security/cve/CVE-2016-8667.html https://www.suse.com/security/cve/CVE-2016-8669.html https://www.suse.com/security/cve/CVE-2016-8909.html https://www.suse.com/security/cve/CVE-2016-8910.html https://www.suse.com/security/cve/CVE-2016-9379.html https://www.suse.com/security/cve/CVE-2016-9380.html https://www.suse.com/security/cve/CVE-2016-9381.html https://www.suse.com/security/cve/CVE-2016-9382.html https://www.suse.com/security/cve/CVE-2016-9383.html https://www.suse.com/security/cve/CVE-2016-9385.html https://www.suse.com/security/cve/CVE-2016-9386.html https://www.suse.com/security/cve/CVE-2016-9637.html https://bugzilla.suse.com/1000106 https://bugzilla.suse.com/1003030 https://bugzilla.suse.com/1003032 https://bugzilla.suse.com/1004016 https://bugzilla.suse.com/1005004 https://bugzilla.suse.com/1005005 https://bugzilla.suse.com/1007157 https://bugzilla.suse.com/1007160 https://bugzilla.suse.com/1009100 https://bugzilla.suse.com/1009103 https://bugzilla.suse.com/1009104 https://bugzilla.suse.com/1009107 https://bugzilla.suse.com/1009109 https://bugzilla.suse.com/1009111 https://bugzilla.suse.com/1011652 https://bugzilla.suse.com/953518 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWFHcpYx+lLeg9Ub1AQhZaw//bYZHZ9fqTCYspT5GKzsjFf3wf/X7xqCA Lxh23dtlA0lJv5ti5h6fawUKeLUsmhr/z17BpSkhxNYWUeQ8V0Xayplz30vjDDS9 iiK/HTkZQOxx8pYQLiYFf8HKuo6KCnT4IvO50Q2hlvx0sMcyR8gbZNYPkt1N6uTu r67RHIwQ7b+svviWBOx06FpGty8+B+LaOCp0e/fUinHQJifox+P8CBNMwDGdD6m1 lPc9t2iA/4P9NzuaxxuQn53hRwU0A5sYhQMG3cvbgFkJDb2vIVbrMLHuSOJTIeF1 0yVfSNNSyfSC6uGrcq38NMlYXZmV+v8j5AkLjBXJgqHNOEhBKae7xNcYG0HA+fM2 sVAYKHE0FtRVL0oO2YiazJNnyKGABKx4/TVCs85CNtQKq3XaRhElb3+nJdoBa+lE ebrX2/xKFrA4mKaC23Z7+LoOJSyt3x3dJ7O+ipiOXZ61Fp03mMdHbNPe3Vf2yd0d 1E57buMI2h7xZrfB2PlbAwyNxj7cYRA+emqe1owfZFp3WoxKwjN/HhxKnQS8tW4M 84O/vQS4jSg9uFSXBJcyzUZo+flonnvegF5YJGpcVpuF/ZlrHATilUi0p5fTBqtt PMnY1ubI9RkhkDRNck+8RS4iNTvXNsJeL6d86GjotJ0iGsobogIXo4aYQkSewkHq nG8npmEXuEY= =/00i -----END PGP SIGNATURE-----