block/cloop: prevent offsets_size integer overflow (CVE-2014-0143)
[qemu/qmp-unstable.git] / tests / qemu-iotests / 075
blob9ce6b1fb8c98be4ae1c7a83143996cbfd106494e
1 #!/bin/bash
3 # cloop format input validation tests
5 # Copyright (C) 2013 Red Hat, Inc.
7 # This program is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 2 of the License, or
10 # (at your option) any later version.
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
21 # creator
22 owner=stefanha@redhat.com
24 seq=`basename $0`
25 echo "QA output created by $seq"
27 here=`pwd`
28 tmp=/tmp/$$
29 status=1 # failure is the default!
31 _cleanup()
33 _cleanup_test_img
35 trap "_cleanup; exit \$status" 0 1 2 3 15
37 # get standard environment, filters and checks
38 . ./common.rc
39 . ./common.filter
41 _supported_fmt cloop
42 _supported_proto generic
43 _supported_os Linux
45 block_size_offset=128
46 n_blocks_offset=132
48 echo
49 echo "== check that the first sector can be read =="
50 _use_sample_img simple-pattern.cloop.bz2
51 $QEMU_IO -c "read 0 512" $TEST_IMG 2>&1 | _filter_qemu_io | _filter_testdir
53 echo
54 echo "== block_size must be a multiple of 512 =="
55 _use_sample_img simple-pattern.cloop.bz2
56 poke_file "$TEST_IMG" "$block_size_offset" "\x00\x00\x02\x01"
57 $QEMU_IO -c "read 0 512" $TEST_IMG 2>&1 | _filter_qemu_io | _filter_testdir
59 echo
60 echo "== block_size cannot be zero =="
61 _use_sample_img simple-pattern.cloop.bz2
62 poke_file "$TEST_IMG" "$block_size_offset" "\x00\x00\x00\x00"
63 $QEMU_IO -c "read 0 512" $TEST_IMG 2>&1 | _filter_qemu_io | _filter_testdir
65 echo
66 echo "== huge block_size ==="
67 _use_sample_img simple-pattern.cloop.bz2
68 poke_file "$TEST_IMG" "$block_size_offset" "\xff\xff\xfe\x00"
69 $QEMU_IO -c "read 0 512" $TEST_IMG 2>&1 | _filter_qemu_io | _filter_testdir
71 echo
72 echo "== offsets_size overflow ==="
73 _use_sample_img simple-pattern.cloop.bz2
74 poke_file "$TEST_IMG" "$n_blocks_offset" "\xff\xff\xff\xff"
75 $QEMU_IO -c "read 0 512" $TEST_IMG 2>&1 | _filter_qemu_io | _filter_testdir
77 # success, all done
78 echo "*** done"
79 rm -f $seq.full
80 status=0