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Fix decoding of Windows resources. 

PR binutils/17512
	* rescoff.c (read_coff_res_dir): Fix detection of buffer overrun.
	* resbin.c (bin_to_res_version): Allow for the padded length of a
	version block to be longer than the recorded length.  Skip padding
	bytes.
This commit is contained in:
Nick Clifton 2016-07-28 15:37:16 +01:00
parent ff20cab8a2
commit 4931146e91
3 changed files with 21 additions and 5 deletions
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8
binutils/ChangeLog
View File

@ -1,3 +1,11 @@
2016-07-28 Nick Clifton <nickc@redhat.com>
PR binutils/17512
* rescoff.c (read_coff_res_dir): Fix detection of buffer overrun.
* resbin.c (bin_to_res_version): Allow for the padded length of a
version block to be longer than the recorded length. Skip padding
bytes.
2016-07-21 H.J. Lu <hongjiu.lu@intel.com>
* configure: Regenerated.

16
binutils/resbin.c
View File

@ -961,9 +961,10 @@ bin_to_res_version (windres_bfd *wrbfd, const bfd_byte *data, rc_uint_type lengt
get_version_header (wrbfd, data, length, "VS_VERSION_INFO",
(unichar **) NULL, &verlen, &vallen, &type, &off);
if ((unsigned int) verlen != length)
fatal (_("version length %d does not match resource length %lu"),
(int) verlen, (unsigned long) length);
/* PR 17512: The verlen field does not include padding length. */
if (verlen > length)
fatal (_("version length %lu greater than resource length %lu"),
verlen, length);
if (type != 0)
fatal (_("unexpected version type %d"), (int) type);
@ -1164,8 +1165,15 @@ bin_to_res_version (windres_bfd *wrbfd, const bfd_byte *data, rc_uint_type lengt
vallen -= 4;
}
}
else if (ch == 0)
{
if (length == 8)
/* Padding - skip. */
break;
fatal (_("nul bytes found in version string"));
}
else
fatal (_("unexpected version string"));
fatal (_("unexpected version string character: %x"), ch);
vi->next = NULL;
*pp = vi;

2
binutils/rescoff.c
View File

@ -249,7 +249,7 @@ read_coff_res_dir (windres_bfd *wrbfd, const bfd_byte *data,
for (j = 0; j < length; j++)
{
/* PR 17512: file: 05dc4a16. */
if (length < 0 || ers >= (bfd_byte *) ere || ers + j * 2 + 4 >= (bfd_byte *) ere)
if (length < 0 || ers >= flaginfo->data_end || ers + j * 2 + 4 >= flaginfo->data_end)
overrun (flaginfo, _("resource name"));
re->id.u.n.name[j] = windres_get_16 (wrbfd, ers + j * 2 + 2, 2);
}