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| author | Kevin Wolf <kwolf@redhat.com> | 2014-03-26 13:06:06 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2014-04-01 15:22:35 +0200 |
| commit | 6a83f8b5bec6f59e56cc49bd49e4c3f8f805d56f (patch) | |
| tree | 4063692109e5f06ece922daad860641ec0fe8421 /tests | |
| parent | c05e4667be91b46ab42b5a11babf8e84d476cc6b (diff) | |
| download | hqemu-6a83f8b5bec6f59e56cc49bd49e4c3f8f805d56f.zip hqemu-6a83f8b5bec6f59e56cc49bd49e4c3f8f805d56f.tar.gz | |
qcow2: Check maximum L1 size in qcow2_snapshot_load_tmp() (CVE-2014-0143)
This avoids an 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>
Diffstat (limited to 'tests')
| -rwxr-xr-x | tests/qemu-iotests/080 | 15 | ||||
| -rw-r--r-- | tests/qemu-iotests/080.out | 6 |
2 files changed, 20 insertions, 1 deletions
diff --git a/tests/qemu-iotests/080 b/tests/qemu-iotests/080 index 59e7a44..6b3a3e7 100755 --- a/tests/qemu-iotests/080 +++ b/tests/qemu-iotests/080 @@ -30,7 +30,8 @@ status=1 # failure is the default! _cleanup() { - _cleanup_test_img + rm -f $TEST_IMG.snap + _cleanup_test_img } trap "_cleanup; exit \$status" 0 1 2 3 15 @@ -58,6 +59,10 @@ offset_ext_size=$((header_size + 4)) offset_l2_table_0=$((0x40000)) +offset_snap1=$((0x70000)) +offset_snap1_l1_offset=$((offset_snap1 + 0)) +offset_snap1_l1_size=$((offset_snap1 + 8)) + echo echo "== Huge header size ==" _make_test_img 64M @@ -161,6 +166,14 @@ poke_file "$TEST_IMG" "$offset_l2_table_0" "\xbf\xff\xff\xff\xff\xff\x00\x00" poke_file "$TEST_IMG" "$offset_l2_table_0" "\x80\x00\x00\xff\xff\xff\x00\x00" { $QEMU_IMG snapshot -c test $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir +echo +echo "== Invalid snapshot L1 table ==" +_make_test_img 64M +{ $QEMU_IO -c "write 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir +{ $QEMU_IMG snapshot -c test $TEST_IMG; } 2>&1 | _filter_testdir +poke_file "$TEST_IMG" "$offset_snap1_l1_size" "\x10\x00\x00\x00" +{ $QEMU_IMG convert -s test $TEST_IMG $TEST_IMG.snap; } 2>&1 | _filter_testdir + # success, all done echo "*** done" rm -f $seq.full diff --git a/tests/qemu-iotests/080.out b/tests/qemu-iotests/080.out index 4d84fbf..f7a943c 100644 --- a/tests/qemu-iotests/080.out +++ b/tests/qemu-iotests/080.out @@ -74,4 +74,10 @@ wrote 512/512 bytes at offset 0 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) qemu-img: Could not create snapshot 'test': -27 (File too large) qemu-img: Could not create snapshot 'test': -11 (Resource temporarily unavailable) + +== Invalid snapshot L1 table == +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 +wrote 512/512 bytes at offset 0 +512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +qemu-img: Failed to load snapshot: Snapshot L1 table too large *** done |
