void-packages/srcpkgs/libsndfile/patches/CVE-2017-14245_CVE-2017-142...

109 lines
3.6 KiB
Diff

commit 2d54514a4f6437b67829717c05472d2e3300a258
Author: Fabian Greffrath <fabian@greffrath.com>
Date: Wed Sep 27 14:46:17 2017 +0200
sfe_copy_data_fp: check value of "max" variable for being normal
and check elements of the data[] array for being finite.
Both checks use functions provided by the <math.h> header as declared
by the C99 standard.
Fixes #317
CVE-2017-14245
CVE-2017-14246
diff --git programs/common.c programs/common.c
index a21e62ca..a249a585 100644
--- programs/common.c
+++ programs/common.c
@@ -36,6 +36,7 @@
#include <string.h>
#include <ctype.h>
#include <stdint.h>
+#include <math.h>
#include <sndfile.h>
@@ -45,7 +46,7 @@
#define MIN(x, y) ((x) < (y) ? (x) : (y))
-void
+int
sfe_copy_data_fp (SNDFILE *outfile, SNDFILE *infile, int channels, int normalize)
{ static double data [BUFFER_LEN], max ;
sf_count_t frames, readcount, k ;
@@ -54,6 +55,8 @@ sfe_copy_data_fp (SNDFILE *outfile, SNDFILE *infile, int channels, int normalize
readcount = frames ;
sf_command (infile, SFC_CALC_SIGNAL_MAX, &max, sizeof (max)) ;
+ if (!isnormal (max)) /* neither zero, subnormal, infinite, nor NaN */
+ return 1 ;
if (!normalize && max < 1.0)
{ while (readcount > 0)
@@ -67,12 +70,16 @@ sfe_copy_data_fp (SNDFILE *outfile, SNDFILE *infile, int channels, int normalize
while (readcount > 0)
{ readcount = sf_readf_double (infile, data, frames) ;
for (k = 0 ; k < readcount * channels ; k++)
- data [k] /= max ;
+ { data [k] /= max ;
+
+ if (!isfinite (data [k])) /* infinite or NaN */
+ return 1;
+ }
sf_writef_double (outfile, data, readcount) ;
} ;
} ;
- return ;
+ return 0 ;
} /* sfe_copy_data_fp */
void
@@ -252,7 +259,12 @@ sfe_apply_metadata_changes (const char * filenames [2], const METADATA_INFO * in
/* If the input file is not the same as the output file, copy the data. */
if ((infileminor == SF_FORMAT_DOUBLE) || (infileminor == SF_FORMAT_FLOAT))
- sfe_copy_data_fp (outfile, infile, sfinfo.channels, SF_FALSE) ;
+ { if (sfe_copy_data_fp (outfile, infile, sfinfo.channels, SF_FALSE) != 0)
+ { printf ("Error : Not able to decode input file '%s'\n", filenames [0]) ;
+ error_code = 1 ;
+ goto cleanup_exit ;
+ } ;
+ }
else
sfe_copy_data_int (outfile, infile, sfinfo.channels) ;
} ;
diff --git programs/common.h programs/common.h
index eda2d7d7..986277ee 100644
--- programs/common.h
+++ programs/common.h
@@ -62,7 +62,7 @@ typedef SF_BROADCAST_INFO_VAR (2048) SF_BROADCAST_INFO_2K ;
void sfe_apply_metadata_changes (const char * filenames [2], const METADATA_INFO * info) ;
-void sfe_copy_data_fp (SNDFILE *outfile, SNDFILE *infile, int channels, int normalize) ;
+int sfe_copy_data_fp (SNDFILE *outfile, SNDFILE *infile, int channels, int normalize) ;
void sfe_copy_data_int (SNDFILE *outfile, SNDFILE *infile, int channels) ;
diff --git programs/sndfile-convert.c programs/sndfile-convert.c
index dff7f793..e6de5935 100644
--- programs/sndfile-convert.c
+++ programs/sndfile-convert.c
@@ -335,7 +335,11 @@ main (int argc, char * argv [])
|| (outfileminor == SF_FORMAT_DOUBLE) || (outfileminor == SF_FORMAT_FLOAT)
|| (infileminor == SF_FORMAT_DOUBLE) || (infileminor == SF_FORMAT_FLOAT)
|| (infileminor == SF_FORMAT_VORBIS) || (outfileminor == SF_FORMAT_VORBIS))
- sfe_copy_data_fp (outfile, infile, sfinfo.channels, normalize) ;
+ { if (sfe_copy_data_fp (outfile, infile, sfinfo.channels, normalize) != 0)
+ { printf ("Error : Not able to decode input file %s.\n", infilename) ;
+ return 1 ;
+ } ;
+ }
else
sfe_copy_data_int (outfile, infile, sfinfo.channels) ;