db8b2514ce
division by zero. PR: 202941 Submitted by: junovitch Obtained from: https://trac.xiph.org/changeset/19117 Obtained from: Fedora vorbis-tools Git (commit 63a1a62d) Security: CVE-2014-9638 Security: CVE-2014-9639 Security: a35f415d-572a-11e5-b0a4-f8b156b6dcc8 MFH: 2015Q3
84 lines
2.5 KiB
C
84 lines
2.5 KiB
C
--- oggenc/audio.c.orig 2010-03-24 08:27:14 UTC
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+++ oggenc/audio.c
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@@ -13,6 +13,7 @@
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#include <config.h>
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#endif
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+#include <limits.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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@@ -245,12 +246,13 @@ static int aiff_permute_matrix[6][6] =
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int aiff_open(FILE *in, oe_enc_opt *opt, unsigned char *buf, int buflen)
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{
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int aifc; /* AIFC or AIFF? */
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- unsigned int len;
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- unsigned char *buffer;
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+ unsigned int len, readlen;
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+ unsigned char buffer[22];
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unsigned char buf2[8];
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aiff_fmt format;
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aifffile *aiff = malloc(sizeof(aifffile));
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int i;
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+ long channels;
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if(buf[11]=='C')
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aifc=1;
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@@ -269,19 +271,25 @@ int aiff_open(FILE *in, oe_enc_opt *opt,
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return 0; /* Weird common chunk */
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}
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- buffer = alloca(len);
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-
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- if(fread(buffer,1,len,in) < len)
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+ readlen = len < sizeof(buffer) ? len : sizeof(buffer);
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+ if(fread(buffer,1,readlen,in) < readlen ||
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+ (len > readlen && !seek_forward(in, len-readlen)))
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{
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fprintf(stderr, _("Warning: Unexpected EOF in reading AIFF header\n"));
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return 0;
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}
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- format.channels = READ_U16_BE(buffer);
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+ format.channels = channels = READ_U16_BE(buffer);
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format.totalframes = READ_U32_BE(buffer+2);
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format.samplesize = READ_U16_BE(buffer+6);
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format.rate = (int)read_IEEE80(buffer+8);
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+ if(channels <= 0L || SHRT_MAX < channels)
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+ {
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+ fprintf(stderr, _("Warning: Unsupported count of channels in AIFF header\n"));
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+ return 0;
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+ }
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+
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aiff->bigendian = 1;
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if(aifc)
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@@ -412,6 +420,7 @@ int wav_open(FILE *in, oe_enc_opt *opt,
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wav_fmt format;
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wavfile *wav = malloc(sizeof(wavfile));
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int i;
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+ long channels;
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/* Ok. At this point, we know we have a WAV file. Now we have to detect
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* whether we support the subtype, and we have to find the actual data
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@@ -449,12 +458,18 @@ int wav_open(FILE *in, oe_enc_opt *opt,
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}
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format.format = READ_U16_LE(buf);
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- format.channels = READ_U16_LE(buf+2);
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+ format.channels = channels = READ_U16_LE(buf+2);
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format.samplerate = READ_U32_LE(buf+4);
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format.bytespersec = READ_U32_LE(buf+8);
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format.align = READ_U16_LE(buf+12);
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format.samplesize = READ_U16_LE(buf+14);
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+ if(channels <= 0L || SHRT_MAX < channels)
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+ {
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+ fprintf(stderr, _("Warning: Unsupported count of channels in WAV header\n"));
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+ return 0;
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+ }
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+
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if(format.format == -2) /* WAVE_FORMAT_EXTENSIBLE */
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{
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if(len<40)
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