Fix for CVE-2014-3633, which is public.

- CVE-2014-3633: Use correct definition when looking up disk in
  qemu blkiotune
  3e745e8f-CVE-2014-3633.patch

OBS-URL: https://build.opensuse.org/package/show/Virtualization/libvirt?expand=0&rev=408

3e745e8f-CVE-2014-3633.patch

@@ -0,0 +1,41 @@
+commit 3e745e8f775dfe6f64f18b5c2fe4791b35d3546b
+Author: Peter Krempa <pkrempa@redhat.com>
+Date:   Thu Sep 11 16:35:53 2014 +0200
+
+    CVE-2014-3633: qemu: blkiotune: Use correct definition when looking up disk
+    
+    Live definition was used to look up the disk index while persistent one
+    was indexed leading to a crash in qemuDomainGetBlockIoTune. Use the
+    correct def and report a nice error.
+    
+    Unfortunately it's accessible via read-only connection, though it can
+    only crash libvirtd in the cases where the guest is hot-plugging disks
+    without reflecting those changes to the persistent definition.  So
+    avoiding hotplug, or doing hotplug where persistent is always modified
+    alongside live definition, will avoid the out-of-bounds access.
+    
+    Introduced in: eca96694a7f992be633d48d5ca03cedc9bbc3c9aa (v0.9.8)
+    Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1140724
+    Reported-by: Luyao Huang <lhuang@redhat.com>
+    Signed-off-by: Peter Krempa <pkrempa@redhat.com>
+
+Index: libvirt-1.2.8/src/qemu/qemu_driver.c
+===================================================================
+--- libvirt-1.2.8.orig/src/qemu/qemu_driver.c
++++ libvirt-1.2.8/src/qemu/qemu_driver.c
+@@ -16141,9 +16141,13 @@ qemuDomainGetBlockIoTune(virDomainPtr do
+     }
+ 
+     if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
+-        int idx = virDomainDiskIndexByName(vm->def, disk, true);
+-        if (idx < 0)
++        int idx = virDomainDiskIndexByName(persistentDef, disk, true);
++        if (idx < 0) {
++            virReportError(VIR_ERR_INVALID_ARG,
++                           _("disk '%s' was not found in the domain config"),
++                           disk);
+             goto endjob;
++        }
+         reply = persistentDef->disks[idx]->blkdeviotune;
+     }
+ 

libvirt.changes

@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Thu Sep 18 22:42:38 MDT 2014 - jfehlig@suse.com
+
+- CVE-2014-3633: Use correct definition when looking up disk in
+  qemu blkiotune
+  3e745e8f-CVE-2014-3633.patch
+
 -------------------------------------------------------------------
 Wed Sep 10 10:24:26 MDT 2014 - jfehlig@suse.com
 

libvirt.spec

@@ -429,6 +429,7 @@ Source1:        libvirtd.init
 Source2:        libvirtd-relocation-server.fw
 Source99:       baselibs.conf
 # Upstream patches
+Patch0:         3e745e8f-CVE-2014-3633.patch
 # Patches pending upstream review
 Patch100:       libvirt-guests-wait-for-ntp.patch
 # Need to go upstream
@@ -950,6 +951,7 @@ namespaces.
 
 %prep
 %setup -q
+%patch0 -p1
 %patch100 -p1
 %patch150 -p1
 %patch151 -p1