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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.1885 xen security update 28 June 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: xen Publisher: Debian Operating System: Debian GNU/Linux 9 Linux variants Impact/Access: Denial of Service -- Existing Account Unauthorised Access -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-12893 CVE-2018-12892 CVE-2018-12891 Original Bulletin: http://www.debian.org/security/2018/dsa-4236 Comment: This advisory references vulnerabilities in products which run on platforms other than Debian. It is recommended that administrators running xen check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - - ------------------------------------------------------------------------- Debian Security Advisory DSA-4236-1 security@debian.org https://www.debian.org/security/ Moritz Muehlenhoff June 27, 2018 https://www.debian.org/security/faq - - ------------------------------------------------------------------------- Package : xen CVE ID : CVE-2018-12891 CVE-2018-12892 CVE-2018-12893 Multiple vulnerabilities have been discovered in the Xen hypervisor: CVE-2018-12891 It was discovered that insufficient validation of PV MMU operations may result in denial of service. CVE-2018-12892 It was discovered that libxl fails to honour the 'readonly' flag on HVM-emulated SCSI disks. CVE-2018-12893 It was discovered that incorrect implementation of debug exception checks could result in denial of service. For the stable distribution (stretch), these problems have been fixed in version 4.8.3+xsa267+shim4.10.1+xsa267-1+deb9u9. We recommend that you upgrade your xen packages. For the detailed security status of xen please refer to its security tracker page at: https://security-tracker.debian.org/tracker/xen Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org - -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEtuYvPRKsOElcDakFEMKTtsN8TjYFAlsz/0cACgkQEMKTtsN8 TjYb8g//dg5mvwFAVUlUL3x83h+malQf4qXiaoHRiorREYkmndCmKLR0gsiSy1yf rffQ2lxTnMVEN/pcEwlFDTT3kPvXWS/sKB+8d7wihLOQ/yc+R1lchZz9rLs1wlf6 STOCVSRscSRSLa5HkRSM8peNrE9WgoL9JXQO0dZ6LNGutm+9r2xjVTd/tU+Z+xsd ZSp356iITderx0Sb8ii3UYO+nNW9itJBct3MAdmlQ6jJ6pJrYnpO1l8AE+QKapzk 70zav49qx6QS40HRz7OzJaEWH74VITIRfggxtvCoQFEnrQtkQ48ImMiEToaegtZS DvJTsCY8YqQ9DLsINoLEwQkHelIl4w9mzH7681/meAZUJjeq80+aVhAFdovFevJ3 jceytwFskKe5qCKqLesFiXwG+sDDbqfpJSKP8xgCL5ltoPO+7aMjkCQwRfyVMEFy ugA9oOYSWbJz5LEs0bhOgmldxgzs+u0yK8hhEQntTXQSMkldL1l6RVzzNZ2WTJZZ UakldERJdbRGVOuzBOEV5GeyRnUtcfBvw7NIIYlcIswcp+h0pSRP5YWCUaEJ2TuB JvKSbNidQxnoguOkuKVmWdO6fZI9oPaIVc5r9nKia017nh/fqLlgy3OC0d9/9Ppm CYQ9plmmS7cs8Keyb7/cp2fouRhJXMMOYvCNvYU2R3UBro9TUm0= =JIlu - -----END PGP SIGNATURE----- - --------------------------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). 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