tree 35f637ffc51bffdf6a01dd6478ccae2a0a2bcb1e
parent 5dae6e30c531feb31eed99f9039b52bf70832ce3
author Kevin Wolf <kwolf@redhat.com> 1395835568 +0100
committer Stefan Hajnoczi <stefanha@redhat.com> 1396358555 +0200

parallels: Fix catalog size integer overflow (CVE-2014-0143)

The first test case would cause a huge memory allocation, leading to a
qemu abort; the second one to a too small malloc() for the catalog
(smaller than s->catalog_size), which causes a read-only out-of-bounds
array access and on big endian hosts an endianess conversion for an
undefined memory area.

The sample image used here is not an original Parallels image. It was
created using an hexeditor on the basis of the struct that qemu uses.
Good enough for trying to crash the driver, but not for ensuring
compatibility.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>