diff options
Diffstat (limited to 'yocto-poky/meta/recipes-multimedia/libsndfile/files/0001-src-sd2.c-Fix-segfault-in-SD2-RSRC-parser.patch')
-rw-r--r-- | yocto-poky/meta/recipes-multimedia/libsndfile/files/0001-src-sd2.c-Fix-segfault-in-SD2-RSRC-parser.patch | 211 |
1 files changed, 0 insertions, 211 deletions
diff --git a/yocto-poky/meta/recipes-multimedia/libsndfile/files/0001-src-sd2.c-Fix-segfault-in-SD2-RSRC-parser.patch b/yocto-poky/meta/recipes-multimedia/libsndfile/files/0001-src-sd2.c-Fix-segfault-in-SD2-RSRC-parser.patch deleted file mode 100644 index cd48710fb..000000000 --- a/yocto-poky/meta/recipes-multimedia/libsndfile/files/0001-src-sd2.c-Fix-segfault-in-SD2-RSRC-parser.patch +++ /dev/null @@ -1,211 +0,0 @@ -From 9341e9c6e70cd3ad76c901c3cf052d4cb52fd827 Mon Sep 17 00:00:00 2001 -From: Erik de Castro Lopo <erikd@mega-nerd.com> -Date: Thu, 27 Jun 2013 18:04:03 +1000 -Subject: [PATCH] src/sd2.c : Fix segfault in SD2 RSRC parser. - -(Upstream commit 9341e9c6e70cd3ad76c901c3cf052d4cb52fd827) - -A specially crafted resource fork for an SD2 file can cause -the SD2 RSRC parser to read data from outside a dynamically -defined buffer. The data that is read is converted into a -short or int and used during further processing. - -Since no write occurs, this is unlikely to be exploitable. - -Bug reported by The Mayhem Team from Cylab, Carnegie Mellon -Univeristy. Paper is: -http://users.ece.cmu.edu/~arebert/papers/mayhem-oakland-12.pdf - -Upstream-Status: Backport - -Signed-off-by: Yue Tao <yue.tao@windriver.com> ---- - src/sd2.c | 93 ++++++++++++++++++++++++++++++++++++------------------------- - 1 file changed, 55 insertions(+), 38 deletions(-) - -diff --git a/src/sd2.c b/src/sd2.c -index 35ce36b..6be150c 100644 ---- a/src/sd2.c -+++ b/src/sd2.c -@@ -1,5 +1,5 @@ - /* --** Copyright (C) 2001-2011 Erik de Castro Lopo <erikd@mega-nerd.com> -+** Copyright (C) 2001-2013 Erik de Castro Lopo <erikd@mega-nerd.com> - ** Copyright (C) 2004 Paavo Jumppanen - ** - ** This program is free software; you can redistribute it and/or modify -@@ -371,44 +371,61 @@ sd2_write_rsrc_fork (SF_PRIVATE *psf, int UNUSED (calc_length)) - */ - - static inline int --read_char (const unsigned char * data, int offset) --{ return data [offset] ; --} /* read_char */ -+read_rsrc_char (const SD2_RSRC *prsrc, int offset) -+{ const unsigned char * data = prsrc->rsrc_data ; -+ if (offset < 0 || offset >= prsrc->rsrc_len) -+ return 0 ; -+ return data [offset] ; -+} /* read_rsrc_char */ - - static inline int --read_short (const unsigned char * data, int offset) --{ return (data [offset] << 8) + data [offset + 1] ; --} /* read_short */ -+read_rsrc_short (const SD2_RSRC *prsrc, int offset) -+{ const unsigned char * data = prsrc->rsrc_data ; -+ if (offset < 0 || offset + 1 >= prsrc->rsrc_len) -+ return 0 ; -+ return (data [offset] << 8) + data [offset + 1] ; -+} /* read_rsrc_short */ - - static inline int --read_int (const unsigned char * data, int offset) --{ return (data [offset] << 24) + (data [offset + 1] << 16) + (data [offset + 2] << 8) + data [offset + 3] ; --} /* read_int */ -+read_rsrc_int (const SD2_RSRC *prsrc, int offset) -+{ const unsigned char * data = prsrc->rsrc_data ; -+ if (offset < 0 || offset + 3 >= prsrc->rsrc_len) -+ return 0 ; -+ return (data [offset] << 24) + (data [offset + 1] << 16) + (data [offset + 2] << 8) + data [offset + 3] ; -+} /* read_rsrc_int */ - - static inline int --read_marker (const unsigned char * data, int offset) --{ -+read_rsrc_marker (const SD2_RSRC *prsrc, int offset) -+{ const unsigned char * data = prsrc->rsrc_data ; -+ -+ if (offset < 0 || offset + 3 >= prsrc->rsrc_len) -+ return 0 ; -+ - if (CPU_IS_BIG_ENDIAN) - return (data [offset] << 24) + (data [offset + 1] << 16) + (data [offset + 2] << 8) + data [offset + 3] ; -- else if (CPU_IS_LITTLE_ENDIAN) -+ if (CPU_IS_LITTLE_ENDIAN) - return data [offset] + (data [offset + 1] << 8) + (data [offset + 2] << 16) + (data [offset + 3] << 24) ; -- else -- return 0x666 ; --} /* read_marker */ -+ -+ return 0 ; -+} /* read_rsrc_marker */ - - static void --read_str (const unsigned char * data, int offset, char * buffer, int buffer_len) --{ int k ; -+read_rsrc_str (const SD2_RSRC *prsrc, int offset, char * buffer, int buffer_len) -+{ const unsigned char * data = prsrc->rsrc_data ; -+ int k ; - - memset (buffer, 0, buffer_len) ; - -+ if (offset < 0 || offset + buffer_len >= prsrc->rsrc_len) -+ return ; -+ - for (k = 0 ; k < buffer_len - 1 ; k++) - { if (psf_isprint (data [offset + k]) == 0) - return ; - buffer [k] = data [offset + k] ; - } ; - return ; --} /* read_str */ -+} /* read_rsrc_str */ - - static int - sd2_parse_rsrc_fork (SF_PRIVATE *psf) -@@ -435,17 +452,17 @@ sd2_parse_rsrc_fork (SF_PRIVATE *psf) - /* Reset the header storage because we have changed to the rsrcdes. */ - psf->headindex = psf->headend = rsrc.rsrc_len ; - -- rsrc.data_offset = read_int (rsrc.rsrc_data, 0) ; -- rsrc.map_offset = read_int (rsrc.rsrc_data, 4) ; -- rsrc.data_length = read_int (rsrc.rsrc_data, 8) ; -- rsrc.map_length = read_int (rsrc.rsrc_data, 12) ; -+ rsrc.data_offset = read_rsrc_int (&rsrc, 0) ; -+ rsrc.map_offset = read_rsrc_int (&rsrc, 4) ; -+ rsrc.data_length = read_rsrc_int (&rsrc, 8) ; -+ rsrc.map_length = read_rsrc_int (&rsrc, 12) ; - - if (rsrc.data_offset == 0x51607 && rsrc.map_offset == 0x20000) - { psf_log_printf (psf, "Trying offset of 0x52 bytes.\n") ; -- rsrc.data_offset = read_int (rsrc.rsrc_data, 0x52 + 0) + 0x52 ; -- rsrc.map_offset = read_int (rsrc.rsrc_data, 0x52 + 4) + 0x52 ; -- rsrc.data_length = read_int (rsrc.rsrc_data, 0x52 + 8) ; -- rsrc.map_length = read_int (rsrc.rsrc_data, 0x52 + 12) ; -+ rsrc.data_offset = read_rsrc_int (&rsrc, 0x52 + 0) + 0x52 ; -+ rsrc.map_offset = read_rsrc_int (&rsrc, 0x52 + 4) + 0x52 ; -+ rsrc.data_length = read_rsrc_int (&rsrc, 0x52 + 8) ; -+ rsrc.map_length = read_rsrc_int (&rsrc, 0x52 + 12) ; - } ; - - psf_log_printf (psf, " data offset : 0x%04X\n map offset : 0x%04X\n" -@@ -488,7 +505,7 @@ sd2_parse_rsrc_fork (SF_PRIVATE *psf) - goto parse_rsrc_fork_cleanup ; - } ; - -- rsrc.string_offset = rsrc.map_offset + read_short (rsrc.rsrc_data, rsrc.map_offset + 26) ; -+ rsrc.string_offset = rsrc.map_offset + read_rsrc_short (&rsrc, rsrc.map_offset + 26) ; - if (rsrc.string_offset > rsrc.rsrc_len) - { psf_log_printf (psf, "Bad string offset (%d).\n", rsrc.string_offset) ; - error = SFE_SD2_BAD_RSRC ; -@@ -497,7 +514,7 @@ sd2_parse_rsrc_fork (SF_PRIVATE *psf) - - rsrc.type_offset = rsrc.map_offset + 30 ; - -- rsrc.type_count = read_short (rsrc.rsrc_data, rsrc.map_offset + 28) + 1 ; -+ rsrc.type_count = read_rsrc_short (&rsrc, rsrc.map_offset + 28) + 1 ; - if (rsrc.type_count < 1) - { psf_log_printf (psf, "Bad type count.\n") ; - error = SFE_SD2_BAD_RSRC ; -@@ -513,11 +530,11 @@ sd2_parse_rsrc_fork (SF_PRIVATE *psf) - - rsrc.str_index = -1 ; - for (k = 0 ; k < rsrc.type_count ; k ++) -- { marker = read_marker (rsrc.rsrc_data, rsrc.type_offset + k * 8) ; -+ { marker = read_rsrc_marker (&rsrc, rsrc.type_offset + k * 8) ; - - if (marker == STR_MARKER) - { rsrc.str_index = k ; -- rsrc.str_count = read_short (rsrc.rsrc_data, rsrc.type_offset + k * 8 + 4) + 1 ; -+ rsrc.str_count = read_rsrc_short (&rsrc, rsrc.type_offset + k * 8 + 4) + 1 ; - error = parse_str_rsrc (psf, &rsrc) ; - goto parse_rsrc_fork_cleanup ; - } ; -@@ -549,26 +566,26 @@ parse_str_rsrc (SF_PRIVATE *psf, SD2_RSRC * rsrc) - for (k = 0 ; data_offset + data_len < rsrc->rsrc_len ; k++) - { int slen ; - -- slen = read_char (rsrc->rsrc_data, str_offset) ; -- read_str (rsrc->rsrc_data, str_offset + 1, name, SF_MIN (SIGNED_SIZEOF (name), slen + 1)) ; -+ slen = read_rsrc_char (rsrc, str_offset) ; -+ read_rsrc_str (rsrc, str_offset + 1, name, SF_MIN (SIGNED_SIZEOF (name), slen + 1)) ; - str_offset += slen + 1 ; - -- rsrc_id = read_short (rsrc->rsrc_data, rsrc->item_offset + k * 12) ; -+ rsrc_id = read_rsrc_short (rsrc, rsrc->item_offset + k * 12) ; - -- data_offset = rsrc->data_offset + read_int (rsrc->rsrc_data, rsrc->item_offset + k * 12 + 4) ; -+ data_offset = rsrc->data_offset + read_rsrc_int (rsrc, rsrc->item_offset + k * 12 + 4) ; - if (data_offset < 0 || data_offset > rsrc->rsrc_len) - { psf_log_printf (psf, "Exiting parser on data offset of %d.\n", data_offset) ; - break ; - } ; - -- data_len = read_int (rsrc->rsrc_data, data_offset) ; -+ data_len = read_rsrc_int (rsrc, data_offset) ; - if (data_len < 0 || data_len > rsrc->rsrc_len) - { psf_log_printf (psf, "Exiting parser on data length of %d.\n", data_len) ; - break ; - } ; - -- slen = read_char (rsrc->rsrc_data, data_offset + 4) ; -- read_str (rsrc->rsrc_data, data_offset + 5, value, SF_MIN (SIGNED_SIZEOF (value), slen + 1)) ; -+ slen = read_rsrc_char (rsrc, data_offset + 4) ; -+ read_rsrc_str (rsrc, data_offset + 5, value, SF_MIN (SIGNED_SIZEOF (value), slen + 1)) ; - - psf_log_printf (psf, " 0x%04x %4d %4d %3d '%s'\n", data_offset, rsrc_id, data_len, slen, value) ; - --- -1.7.9.5 - |