Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.1244 SUSE-SU-2019:0921-1 Security update for xen 11 April 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: xen Publisher: SUSE Operating System: SUSE Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Increased Privileges -- Existing Account Access Privileged Data -- Existing Account Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-9824 CVE-2019-6778 CVE-2018-19967 Reference: ESB-2019.1165 ESB-2019.1098.3 ESB-2019.0502.3 ESB-2019.0496 Original Bulletin: https://www.suse.com/support/update/announcement/2019/suse-su-20190921-1.html - --------------------------BEGIN INCLUDED TEXT-------------------- SUSE Security Update: Security update for xen ______________________________________________________________________________ Announcement ID: SUSE-SU-2019:0921-1 Rating: important References: #1026236 #1114988 #1123157 #1126140 #1126141 #1126192 #1126195 #1126196 #1126198 #1126201 #1127400 #1129623 Cross-References: CVE-2018-19967 CVE-2019-6778 CVE-2019-9824 Affected Products: SUSE OpenStack Cloud 7 SUSE Linux Enterprise Server for SAP 12-SP2 SUSE Linux Enterprise Server 12-SP2-LTSS SUSE Linux Enterprise Server 12-SP2-BCL SUSE Enterprise Storage 4 ______________________________________________________________________________ An update that solves three vulnerabilities and has 9 fixes is now available. Description: This update for xen fixes the following issues: Security issues fixed: o Fixed an issue which could allow malicious PV guests may cause a host crash or gain access to data pertaining to other guests.Additionally, vulnerable configurations are likely to be unstable even in the absence of an attack (bsc#1126198). o Fixed multiple access violations introduced by XENMEM_exchange hypercall which could allow a single PV guest to leak arbitrary amounts of memory, leading to a denial of service (bsc#1126192). o Fixed an issue which could allow a malicious unprivileged guest userspace process to escalate its privilege to that of other userspace processes in the same guest and potentially thereby to that of the guest operating system (bsc#1126201). o Fixed an issue which could allow a malicious or buggy x86 PV guest kernels can mount a Denial of Service attack affecting the whole system (bsc# 1126196). o Fixed an issue which could allow an untrusted PV domain with access to a physical device to DMA into its own pagetables leading to privilege escalation (bsc#1126195). o CVE-2019-6778: Fixed a heap buffer overflow in tcp_emu() found in slirp (bsc#1123157). o Fixed an issue which could allow malicious 64bit PV guests to cause a host crash (bsc#1127400). o Fixed an issue which could allow malicious or buggy guests with passed through PCI devices to be able to escalate their privileges, crash the host, or access data belonging to other guests. Additionally memory leaks were also possible (bsc#1126140). o Fixed a race condition issue which could allow malicious PV guests to escalate their privilege to that of the hypervisor (bsc#1126141). o CVE-2019-9824: Fixed an information leak in SLiRP networking implementation which could allow a user/process to read uninitialised stack memory contents (bsc#1129623). o CVE-2018-19967: Fixed HLE constructs that allowed guests to lock up the host, resulting in a Denial of Service (DoS). (XSA-282) (bsc#1114988) Other issue addressed: o Added Xen cmdline option "suse_vtsc_tolerance" to avoid TSC emulation for HVM domUs (bsc#1026236). Patch Instructions: To 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: o SUSE OpenStack Cloud 7: zypper in -t patch SUSE-OpenStack-Cloud-7-2019-921=1 o SUSE Linux Enterprise Server for SAP 12-SP2: zypper in -t patch SUSE-SLE-SAP-12-SP2-2019-921=1 o SUSE Linux Enterprise Server 12-SP2-LTSS: zypper in -t patch SUSE-SLE-SERVER-12-SP2-2019-921=1 o SUSE Linux Enterprise Server 12-SP2-BCL: zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2019-921=1 o SUSE Enterprise Storage 4: zypper in -t patch SUSE-Storage-4-2019-921=1 Package List: o SUSE OpenStack Cloud 7 (x86_64): xen-4.7.6_06-43.48.1 xen-debugsource-4.7.6_06-43.48.1 xen-doc-html-4.7.6_06-43.48.1 xen-libs-32bit-4.7.6_06-43.48.1 xen-libs-4.7.6_06-43.48.1 xen-libs-debuginfo-32bit-4.7.6_06-43.48.1 xen-libs-debuginfo-4.7.6_06-43.48.1 xen-tools-4.7.6_06-43.48.1 xen-tools-debuginfo-4.7.6_06-43.48.1 xen-tools-domU-4.7.6_06-43.48.1 xen-tools-domU-debuginfo-4.7.6_06-43.48.1 o SUSE Linux Enterprise Server for SAP 12-SP2 (x86_64): xen-4.7.6_06-43.48.1 xen-debugsource-4.7.6_06-43.48.1 xen-doc-html-4.7.6_06-43.48.1 xen-libs-32bit-4.7.6_06-43.48.1 xen-libs-4.7.6_06-43.48.1 xen-libs-debuginfo-32bit-4.7.6_06-43.48.1 xen-libs-debuginfo-4.7.6_06-43.48.1 xen-tools-4.7.6_06-43.48.1 xen-tools-debuginfo-4.7.6_06-43.48.1 xen-tools-domU-4.7.6_06-43.48.1 xen-tools-domU-debuginfo-4.7.6_06-43.48.1 o SUSE Linux Enterprise Server 12-SP2-LTSS (x86_64): xen-4.7.6_06-43.48.1 xen-debugsource-4.7.6_06-43.48.1 xen-doc-html-4.7.6_06-43.48.1 xen-libs-32bit-4.7.6_06-43.48.1 xen-libs-4.7.6_06-43.48.1 xen-libs-debuginfo-32bit-4.7.6_06-43.48.1 xen-libs-debuginfo-4.7.6_06-43.48.1 xen-tools-4.7.6_06-43.48.1 xen-tools-debuginfo-4.7.6_06-43.48.1 xen-tools-domU-4.7.6_06-43.48.1 xen-tools-domU-debuginfo-4.7.6_06-43.48.1 o SUSE Linux Enterprise Server 12-SP2-BCL (x86_64): xen-4.7.6_06-43.48.1 xen-debugsource-4.7.6_06-43.48.1 xen-doc-html-4.7.6_06-43.48.1 xen-libs-32bit-4.7.6_06-43.48.1 xen-libs-4.7.6_06-43.48.1 xen-libs-debuginfo-32bit-4.7.6_06-43.48.1 xen-libs-debuginfo-4.7.6_06-43.48.1 xen-tools-4.7.6_06-43.48.1 xen-tools-debuginfo-4.7.6_06-43.48.1 xen-tools-domU-4.7.6_06-43.48.1 xen-tools-domU-debuginfo-4.7.6_06-43.48.1 o SUSE Enterprise Storage 4 (x86_64): xen-4.7.6_06-43.48.1 xen-debugsource-4.7.6_06-43.48.1 xen-doc-html-4.7.6_06-43.48.1 xen-libs-32bit-4.7.6_06-43.48.1 xen-libs-4.7.6_06-43.48.1 xen-libs-debuginfo-32bit-4.7.6_06-43.48.1 xen-libs-debuginfo-4.7.6_06-43.48.1 xen-tools-4.7.6_06-43.48.1 xen-tools-debuginfo-4.7.6_06-43.48.1 xen-tools-domU-4.7.6_06-43.48.1 xen-tools-domU-debuginfo-4.7.6_06-43.48.1 References: o https://www.suse.com/security/cve/CVE-2018-19967.html o https://www.suse.com/security/cve/CVE-2019-6778.html o https://www.suse.com/security/cve/CVE-2019-9824.html o https://bugzilla.suse.com/1026236 o https://bugzilla.suse.com/1114988 o https://bugzilla.suse.com/1123157 o https://bugzilla.suse.com/1126140 o https://bugzilla.suse.com/1126141 o https://bugzilla.suse.com/1126192 o https://bugzilla.suse.com/1126195 o https://bugzilla.suse.com/1126196 o https://bugzilla.suse.com/1126198 o https://bugzilla.suse.com/1126201 o https://bugzilla.suse.com/1127400 o https://bugzilla.suse.com/1129623 - --------------------------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: https://www.auscert.org.au/bulletins/ =========================================================================== 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 iQIVAwUBXK7VZmaOgq3Tt24GAQhQHw/+MSnd6Ku6wH874uwlFppuVAmgMBmM02ZO kj685v+yT9S1aKn/WrFWJPkASCihfGTNASSGxtNdnHK29xLxRx5jXSzQC/BIoRbc Q5aJOscr2GTJYZbR1GsRAFCz4wxDKMaGO4KTr4t78SpgN3bq8uTRQ3Ld2JhBm0NS 9+FZkpK3yZf9+a2H4d2upQGzAmv3YoAVDe2/Fc+PKGYKQv2RulrC745Vd9Ns7+7l RvTr6c8o85zD5p6Xbp8l9XE85YnDOdN+/Yh9ANYnzEZhv3DQSh7uE4wRqNQ4j3W0 dBGP4UoeZ+oofdsxkp4l234tzk6KnclRF54eT5EVvZ1pgBQEAYTJiGmbC7hRenyY RYbtTbk8ghsBvLAE4ZkfIOCTU92Ye23qIKkagO9k9DciThycg9oy74xtJSGaz1kH qRlFuMWayV/D3mPz2p8L+54KJ//i41/jUYvOQOyq6Dtg0Hw6uTHxmgmUA0Tq73K7 QINiJ9Qea+zLUqSepFVDXrLwIw/WXMc1qA6B8wZFLVWxaCc8o1P1ha5iBTxbWgDM Gxud2levZpm5VwdvhNGBnvP4HjZ03FiLdhx7A2ay4A4F4CoXj5XAn+I1rsVeqoi4 xygDD7HQUiIXfyppoC6/i5ggIM5Hybs+QVbuYg/oNzBxJG3mK+//qYCb0KtB1SbN +lsfUoVx8cg= =urrs -----END PGP SIGNATURE-----