news 28 Posted July 30, 2016 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Package : xen Version : 4.1.6.lts1-1 CVE ID : CVE-2014-3672 CVE-2016-3158 CVE-2016-3159 CVE-2016-3710 CVE-2016-3712 CVE-2016-3960 CVE-2016-4480 CVE-2016-6258 Debian Bug : Multiple vulnerabilities have been discovered in the Xen hypervisor. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2014-3672 (XSA-180) Andrew Sorensen discovered that a HVM domain can exhaust the hosts disk space by filling up the log file. CVE-2016-3158, CVE-2016-3159 (XSA-172) Jan Beulich from SUSE discovered that Xen does not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors. A malicious domain can take advantage of this flaw to obtain address space usage and timing information, about another domain, at a fairly low rate. CVE-2016-3710 (XSA-179) Wei Xiao and Qinghao Tang of 360.cn Inc discovered an out-of-bounds read and write flaw in the QEMU VGA module. A privileged guest user could use this flaw to execute arbitrary code on the host with the privileges of the hosting QEMU process. CVE-2016-3712 (XSA-179) Zuozhi Fzz of Alibaba Inc discovered potential integer overflow or out-of-bounds read access issues in the QEMU VGA module. A privileged guest user could use this flaw to mount a denial of service (QEMU process crash). CVE-2016-3960 (XSA-173) Ling Liu and Yihan Lian of the Cloud Security Team, Qihoo 360 discovered an integer overflow in the x86 shadow pagetable code. A HVM guest using shadow pagetables can cause the host to crash. A PV guest using shadow pagetables (i.e. being migrated) with PV superpages enabled (which is not the default) can crash the host, or corrupt hypervisor memory, potentially leading to privilege escalation. CVE-2016-4480 (XSA-176) Jan Beulich discovered that incorrect page table handling could result in privilege escalation inside a Xen guest instance. CVE-2016-6258 (XSA-182) Jérémie Boutoille discovered that incorrect pagetable handling in PV instances could result in guest to host privilege escalation. Additionally this Xen Security Advisory without a CVE was fixed: XSA-166 Konrad Rzeszutek Wilk and Jan Beulich discovered that ioreq handling is possibly susceptible to a multiple read issue. For Debian 7 "Wheezy", these problems have been fixed in version 4.1.6.lts1-1. We recommend that you upgrade your xen packages. Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS -----BEGIN PGP SIGNATURE----- iQIcBAEBCAAGBQJXnG7HAAoJEAe4t7DqmBILHEQP/Rc4wQC3bIp3FC1EWf+ZmrZ7 IKSCmujP9gdpnm8O2nswcFTd+XaJ1ncYK0Q4Te7yppspAmyF9YLBoyOxcQstXNbA Wu/+kR3bvZJIR48wzBsGocZL9NvKnHdGHs3d4tkd9MUGU7rx1BGNqxBW/8h49nmC HQVRQGTYKlW+slljMzVi3RPUB4VRWy2EzVtHcAHXdje4WJDora4RdLc4iqtfKpgJ q+5NnilNClYa617i220AyKcUsgvzY4lLXCtQM4LotOY4YX9js1Lr0e+B/kLs8fVs pJxkJVTrsLa1NlE1Wj3IuwYRNnyEoPUngZX9E6YKyA797FGotwrGenmyTpeWLi+W IQbyVFlYIdKX88OgEmz+j7LIs9YSV2wXkigpcddqXnL6yHFZ0Zl7iAC7vyT/MgSV lHtV9w0hAjC/g/Y/TDxEHzusHNo97pAMJQVuEpmB9T+bzkg6hfJin+OjldQtQ6lW 3MGvkztwfhiYsRJyoDxYuVBr4GT5MdCgTujTtThVxdntmPk0aLvbYsvKyKecAIMU +Y1iVx5ErboP06vlzdJ7RBNAc3lvYvpvtbfMYSGCCyYMREPdLnwaDaZ234RNOvI3 QbSAbuPrjf9L5HaSDpdFMgFaJtrNCKKiXO5zSXTx8BYL9bkFJ8ORlDdxGe5ScbO0 cq++Ai7qDrQDTZpQVv9m =yWuS -----END PGP SIGNATURE----- Share this post Link to post
