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qemu/tests/qemu-iotests/080.out

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qcow2: Check header_length (CVE-2014-0144) This fixes an unbounded allocation for s->unknown_header_fields. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-03-26 20:05:41 +08:00
QA output created by 080
== Huge header size ==
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
qemu-io: can't open device TEST_DIR/t.qcow2: qcow2 header exceeds cluster size
no file open, try 'help open'
qemu-io: can't open device TEST_DIR/t.qcow2: qcow2 header exceeds cluster size
no file open, try 'help open'
qcow2: Check backing_file_offset (CVE-2014-0144) Header, header extension and the backing file name must all be stored in the first cluster. Setting the backing file to a much higher value allowed header extensions to become much bigger than we want them to be (unbounded allocation). Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-03-26 20:05:42 +08:00
== Huge unknown header extension ==
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
qemu-io: can't open device TEST_DIR/t.qcow2: Invalid backing file offset
no file open, try 'help open'
qemu-io: can't open device TEST_DIR/t.qcow2: Header extension too large
no file open, try 'help open'
qcow2: Check refcount table size (CVE-2014-0144) Limit the in-memory reference count table size to 8 MB, it's enough in practice. This fixes an unbounded allocation as well as a buffer overflow in qcow2_refcount_init(). Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-03-26 20:05:43 +08:00
== Huge refcount table size ==
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
qemu-io: can't open device TEST_DIR/t.qcow2: Reference count table too large
no file open, try 'help open'
qemu-io: can't open device TEST_DIR/t.qcow2: Reference count table too large
no file open, try 'help open'
qcow2: Validate refcount table offset The end of the refcount table must not exceed INT64_MAX so that integer overflows are avoided. Also check for misaligned refcount table. Such images are invalid and probably the result of data corruption. Error out to avoid further corruption. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-03-26 20:05:44 +08:00
== Misaligned refcount table ==
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
qemu-io: can't open device TEST_DIR/t.qcow2: Invalid reference count table offset
no file open, try 'help open'
== Huge refcount offset ==
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
qemu-io: can't open device TEST_DIR/t.qcow2: Invalid reference count table offset
no file open, try 'help open'
qcow2: Check header_length (CVE-2014-0144) This fixes an unbounded allocation for s->unknown_header_fields. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-03-26 20:05:41 +08:00
*** done