From 3bbabc06c4b35c84f6747ed850213161aca568c7 Mon Sep 17 00:00:00 2001
From: Petter Reinholdtsen <pere@debian.org>
Date: Tue, 22 Sep 2015 15:14:06 +0200
Subject: [PATCH] oggenc: validate count of channels in the header
(CVE-2014-9638 & CVE-2014-9639)
Author: Kamil Dudka <kdudka@redhat.com>
Origin: http://lists.xiph.org/pipermail/vorbis-dev/2015-February/020423.html
Bug: https://trac.xiph.org/ticket/2136
Bug: https://trac.xiph.org/ticket/2137
Bug-Debian: https://bugs.debian.org/776086
Forwarded: not-needed
Reviewed-By: Petter Reinholdtsen <pere@hungry.com>
Last-Update: 2015-09-22
---
oggenc/audio.c | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 deletions(-)
diff --git a/oggenc/audio.c b/oggenc/audio.c
index 4921fb9..535a704 100644
--- a/oggenc/audio.c
+++ b/oggenc/audio.c
@@ -13,6 +13,7 @@
#include <config.h>
#endif
+#include <limits.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
@@ -251,6 +252,7 @@ int aiff_open(FILE *in, oe_enc_opt *opt, unsigned char *buf, int buflen)
aiff_fmt format;
aifffile *aiff = malloc(sizeof(aifffile));
int i;
+ long channels;
if(buf[11]=='C')
aifc=1;
@@ -277,11 +279,16 @@ int aiff_open(FILE *in, oe_enc_opt *opt, unsigned char *buf, int buflen)
return 0;
}
- format.channels = READ_U16_BE(buffer);
+ format.channels = channels = READ_U16_BE(buffer);
format.totalframes = READ_U32_BE(buffer+2);
format.samplesize = READ_U16_BE(buffer+6);
format.rate = (int)read_IEEE80(buffer+8);
+ if(channels <= 0L || SHRT_MAX < channels)
+ {
+ fprintf(stderr, _("Warning: Unsupported count of channels in AIFF header\n"));
+ return 0;
+ }
aiff->bigendian = 1;
if(aifc)
@@ -416,6 +423,7 @@ int wav_open(FILE *in, oe_enc_opt *opt, unsigned char *oldbuf, int buflen)
wav_fmt format;
wavfile *wav = malloc(sizeof(wavfile));
int i;
+ long channels;
/* Ok. At this point, we know we have a WAV file. Now we have to detect
* whether we support the subtype, and we have to find the actual data
@@ -453,12 +461,18 @@ int wav_open(FILE *in, oe_enc_opt *opt, unsigned char *oldbuf, int buflen)
}
format.format = READ_U16_LE(buf);
- format.channels = READ_U16_LE(buf+2);
+ format.channels = channels = READ_U16_LE(buf+2);
format.samplerate = READ_U32_LE(buf+4);
format.bytespersec = READ_U32_LE(buf+8);
format.align = READ_U16_LE(buf+12);
format.samplesize = READ_U16_LE(buf+14);
+ if(channels <= 0L || SHRT_MAX < channels)
+ {
+ fprintf(stderr, _("Warning: Unsupported count of channels in WAV header\n"));
+ return 0;
+ }
+
if(format.format == -2) /* WAVE_FORMAT_EXTENSIBLE */
{
if(len<40)
--
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