-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - ------------------------------------------------------------------------- Debian Security Advisory DSA-3286-1 security@xxxxxxxxxx https://www.debian.org/security/ Moritz Muehlenhoff June 13, 2015 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : xen CVE ID : CVE-2015-3209 CVE-2015-4103 CVE-2015-4104 CVE-2015-4105 CVE-2015-4106 CVE-2015-4163 CVE-2015-4164 Multiple security issues have been found in the Xen virtualisation solution: CVE-2015-3209 Matt Tait discovered a flaw in the way QEMU's AMD PCnet Ethernet emulation handles multi-TMD packets with a length above 4096 bytes. A privileged guest user in a guest with an AMD PCNet ethernet card enabled can potentially use this flaw to execute arbitrary code on the host with the privileges of the hosting QEMU process. CVE-2015-4103 Jan Beulich discovered that the QEMU Xen code does not properly restrict write access to the host MSI message data field, allowing a malicious guest to cause a denial of service. CVE-2015-4104 Jan Beulich discovered that the QEMU Xen code does not properly restrict access to PCI MSI mask bits, allowing a malicious guest to cause a denial of service. CVE-2015-4105 Jan Beulich reported that the QEMU Xen code enables logging for PCI MSI-X pass-through error messages, allowing a malicious guest to cause a denial of service. CVE-2015-4106 Jan Beulich discovered that the QEMU Xen code does not properly restrict write access to the PCI config space for certain PCI pass-through devices, allowing a malicious guest to cause a denial of service, obtain sensitive information or potentially execute arbitrary code. CVE-2015-4163 Jan Beulich discovered that a missing version check in the GNTTABOP_swap_grant_ref hypercall handler may result in denial of service. This only applies to Debian stable/jessie. CVE-2015-4164 Andrew Cooper discovered a vulnerability in the iret hypercall handler, which may result in denial of service. For the oldstable distribution (wheezy), these problems have been fixed in version 4.1.4-3+deb7u8. For the stable distribution (jessie), these problems have been fixed in version 4.4.1-9+deb8u1. CVE-2015-3209, CVE-2015-4103, CVE-2015-4104, CVE-2015-4105 and CVE-2015-4106 don't affect the Xen package in stable jessie, it uses the standard qemu package and has already been fixed in DSA-3284-1. For the unstable distribution (sid), these problems will be fixed soon. We recommend that you upgrade your xen packages. 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@xxxxxxxxxxxxxxxx -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJVfDmzAAoJEBDCk7bDfE42W3AP+QGuXuhGJ5FFSHK7UmCFPbrn xsujh8hQKJHb7WFc7k/xdimHWRT2K6MJ6v29Zl+MNR2oLcO0ty28Xuyb+EIWwTbV avuP2igg56delwp73P5ts3ZX4YFBCsonqCjIhSd3QCQkAIGL63x78n26OrDAVvba 2piJ2lJPAMhm4gBJvkWbKnQaIDaDN5qzckZwXfHgCYKhu/d0C2ZrD+RcMg+UTq6j CFqWB/xaGMT6WILfiKPOMlKkNxH1rqaJ3Kou5q8i9T4QvZq9vU0KHhYWWecFo/KP S1AH7Vp1UZPQbxVAYHq2mITvIr6RRRMZxJEpzG6wnlPV5G8cM6ZqR1a7nBQ9mhoB lRWNs8zHvMpS2XxfXzgt/pV3jH1Pj+ELPWP+m4Kjy8g2xFaiW8y4LYq4AUv5+oDa IBuJW+UNkEWIyrWqhzu0laT8EwTmS1JFt4est4bbNMU0O2Xdo6qB432XNwM804lo lsii1eEXe0FKpFZVYKho1gLCHVxdWz3EPhZ5qHb8Gi5tnbElVY7aqtACBFXvKd6K 81+qOpiqGk8EMHkdmGBXpwJoMTIczBXxXD9RZazq1Ynr3yNcgtnsz7CVqJTUAb2a Ot4yIf0E5kYAau+tyVQ+Y0ZRbUN3A1u+6gpJqLvTqF80pj1M8kt7DuXC/2lQXl4q ngY7U6RlmLRNSaXd+xvR =gL/x -----END PGP SIGNATURE-----
