Ubuntu Security Notice 2867-1 - It was discovered that libvirt incorrectly handled the firewall rules on bridge networks when the daemon was restarted. This could result in an unintended firewall configuration. This issue only applied to Ubuntu 12.04 LTS. Peter Krempa discovered that libvirt incorrectly handled locking when certain ACL checks failed. A local attacker could use this issue to cause libvirt to stop responding, resulting in a denial of service. This issue only applied to Ubuntu 14.04 LTS. Various other issues were also addressed.
81de5061f01fc900a3f9b5fe66332907d17877a48a0c25d90b22b5288c911ff4Mandriva Linux Security Advisory 2015-115 - The LXC driver in libvirt 1.0.1 through 1.2.1 allows local users to delete arbitrary host devices via the virDomainDeviceDettach API and a symlink attack on /dev in the container; via the virDomainDeviceAttach API and a symlink attack on /dev in the container; and cause a denial of service (shutdown or reboot host OS) via the virDomainReboot API and a symlink attack on /dev/initctl in the container, related to paths under /proc//root and the virInitctlSetRunLevel function. Various other issues have also been addressed.
6ae8444cee405a1fa17b4071c1f7b85b191e5b4db7e6d53ab6a0a1a1d4adf05dMandriva Linux Security Advisory 2015-070 - The qemuDomainMigratePerform and qemuDomainMigrateFinish2 functions in qemu/qemu_driver.c in libvirt do not unlock the domain when an ACL check fails, which allow local users to cause a denial of service via unspecified vectors. The XML getters for for save images and snapshots objects don't check ACLs for the VIR_DOMAIN_XML_SECURE flag and might possibly dump security sensitive information. A remote attacker able to establish a connection to libvirtd could use this flaw to cause leak certain limited information from the domain xml file. The updated packages provides the latest 1.1.3.9 version which has more robust fixes for MDVSA-2015:023 and MDVSA-2015:035.
796bd3102ef7c6389d24d91c773931cb0e9d2950fc7139ad29fcc5261a01992dRed Hat Security Advisory 2015-0323-02 - The libvirt library is a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. It was found that QEMU's qemuDomainMigratePerform() and qemuDomainMigrateFinish2() functions did not correctly perform a domain unlock on a failed ACL check. A remote attacker able to establish a connection to libvirtd could use this flaw to lock a domain of a more privileged user, causing a denial of service. It was discovered that the virDomainSnapshotGetXMLDesc() and virDomainSaveImageGetXMLDesc() functions did not sufficiently limit the usage of the VIR_DOMAIN_XML_SECURE flag when fine-grained ACLs were enabled. A remote attacker able to establish a connection to libvirtd could use this flaw to obtain certain sensitive information from the domain XML file.
236a2d1e3236a54f694876bb3fd80e8152a17f30280749df5045af4716893432Mandriva Linux Security Advisory 2015-023 - The qemuDomainMigratePerform and qemuDomainMigrateFinish2 functions in qemu/qemu_driver.c in libvirt do not unlock the domain when an ACL check fails, which allow local users to cause a denial of service via unspecified vectors.
3b9e926c5fdecb27c682d9a45247c187e91b7779b1fea3239e09cab6ad24c23cGentoo Linux Security Advisory 201412-36 - Multiple vulnerabilities have been found in libvirt, worst of which allows context-dependent attackers to cause Denial of Service. Versions less than 1.2.10-r3 are affected.
9e5dcc6c41b1732a37708daa02c27ffe7ecd08b0ce8d0bddd364c7c70ba9f917
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