CVE-2014-7823

Eric Blake discovered that libvirt incorrectly handled permissions when processing the qemuDomainFormatXML command. An attacker with read-only privileges could possibly use this to gain access to certain information from the domain xml file (CVE-2014-7823).

These are all security issues fixed in the libvirt-2.5.0-1.1 package on the GA media of openSUSE Tumbleweed.

libvirt was updated to fix security issues and bugs.

These security issues were fixed:

• Fixed denial of service flaw in libvirt's virConnectListAllDomains() function (CVE-2014-3657).
• Information leak with flag VIR_DOMAIN_XML_MIGRATABLE (CVE-2014-7823).
• local denial of service in qemu driver (CVE-2014-8136)

These non-security issues were fixed:

• Get /proc/sys/net/ipv[46] read-write for wicked to work in containers (bsc#904432).
• libxl: Several migration improvements (bsc#903756).
• libxl: allow libxl to find pygrub binary (bdo#770485).
• Fix Qemu AppArmor abstraction (bsc#904426).
• AppArmor confined kvm domains couldn't find the apparmor profile template (bnc#902976).
• Backport commit c110cdb2 to fix non-raw storage format error (bnc#900587).
• qemu: use systemd's TerminateMachine to kill all processes (bsc#899334).
• Transformed Errors into warnings in detect_scsi_host_caps.
• Fix a missing cleanup for lxc containers.
• Adding network configuration to containers. bsc#904432

This collective update for KVM and libvirt provides fixes for security and non-security issues.

kvm:

* Fix NULL pointer dereference because of uninitialized UDP socket.
  (bsc#897654, CVE-2014-3640)
* Fix performance degradation after migration. (bsc#878350)
* Fix potential image corruption due to missing FIEMAP_FLAG_SYNC flag
  in FS_IOC_FIEMAP ioctl. (bsc#908381)
* Add validate hex properties for qdev. (bsc#852397)
* Add boot option to do strict boot (bsc#900084)
* Add query-command-line-options QMP command. (bsc#899144)
* Fix incorrect return value of migrate_cancel. (bsc#843074)
* Fix insufficient parameter validation during ram load. (bsc#905097,
  CVE-2014-7840)
* Fix insufficient blit region checks in qemu/cirrus. (bsc#907805,
  CVE-2014-8106)

libvirt:

* Fix security hole with migratable flag in dumpxml. (bsc#904176,
  CVE-2014-7823)
* Fix domain deadlock. (bsc#899484, CVE-2014-3657)
* Use correct definition when looking up disk in qemu blkiotune.
  (bsc#897783, CVE-2014-3633)
* Fix undefined symbol when starting virtlockd. (bsc#910145)
* Add '-boot strict' to qemu's commandline whenever possible.
  (bsc#900084)
* Add support for 'reboot-timeout' in qemu. (bsc#899144)
* Increase QEMU's monitor timeout to 30sec. (bsc#911742)
* Allow setting QEMU's migration max downtime any time. (bsc#879665)

Security Issues:

* CVE-2014-7823
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-7823>
* CVE-2014-3657
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3657>
* CVE-2014-3633
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3633>
* CVE-2014-3640
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3640>
* CVE-2014-7840
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-7840>
* CVE-2014-8106
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8106>

The virDomainGetXMLDesc API in Libvirt before 1.2.11 allows remote read-only users to obtain the VNC password by using the VIR_DOMAIN_XML_MIGRATABLE flag, which triggers the use of the VIR_DOMAIN_XML_SECURE flag.

Pavel Hrdina discovered that libvirt incorrectly handled locking when processing the virConnectListAllDomains command. An attacker could use this issue to cause libvirtd to hang, resulting in a denial of service. (CVE-2014-3657)

Eric Blake discovered that libvirt incorrectly handled permissions when processing the qemuDomainFormatXML command. An attacker with read-only privileges could possibly use this to gain access to certain information from the domain xml file. (CVE-2014-7823)