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home:Alexander_Naumov:SLE-12:Update
php72.24758
php-CVE-2019-11035.patch
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File php-CVE-2019-11035.patch of Package php72.24758
X-Git-Url: http://208.43.231.11:8000/?p=php-src.git;a=blobdiff_plain;f=ext%2Fexif%2Fexif.c;h=75f59d71c91b2cdfd6c05e471f18edd9715acd3f;hp=407145fffcb36eea0fb98e7e2b83c9f3e4091af5;hb=330f1716df49c0d3474c18b6dcd370a9dcf57422;hpb=1c0d06441aefee18b30520e2b1ae89cbfcf56a59 Index: php-7.2.5/ext/exif/exif.c =================================================================== --- php-7.2.5.orig/ext/exif/exif.c 2019-04-29 12:08:21.787510186 +0200 +++ php-7.2.5/ext/exif/exif.c 2019-04-29 12:08:21.799510259 +0200 @@ -2062,10 +2062,10 @@ static int exif_file_sections_free(image /* {{{ exif_iif_add_value Add a value to image_info */ -static void exif_iif_add_value(image_info_type *image_info, int section_index, char *name, int tag, int format, int length, void* value, int motorola_intel) +static void exif_iif_add_value(image_info_type *image_info, int section_index, char *name, int tag, int format, int length, void* value, size_t value_len, int motorola_intel) { size_t idex; - void *vptr; + void *vptr, *vptr_end; image_info_value *info_value; image_info_data *info_data; image_info_data *list; @@ -2087,8 +2087,12 @@ static void exif_iif_add_value(image_inf switch (format) { case TAG_FMT_STRING: + if (length > value_len) { + exif_error_docref("exif_iif_add_value" EXIFERR_CC, image_info, E_WARNING, "length > value_len: %d > %zu", length, value_len); + value = NULL; + } if (value) { - length = php_strnlen(value, length); + length = (int)php_strnlen(value, length); info_value->s = estrndup(value, length); info_data->length = length; } else { @@ -2110,6 +2114,10 @@ static void exif_iif_add_value(image_inf if (!length) break; case TAG_FMT_UNDEFINED: + if (length > value_len) { + exif_error_docref("exif_iif_add_value" EXIFERR_CC, image_info, E_WARNING, "length > value_len: %d > %zu", length, value_len); + value = NULL; + } if (value) { if (tag == TAG_MAKER_NOTE) { length = (int) php_strnlen(value, length); @@ -2140,7 +2148,12 @@ static void exif_iif_add_value(image_inf } else { info_value = &info_data->value; } + vptr_end = (char*)value+value_len; for (idex=0,vptr=value; idex<(size_t)length; idex++,vptr=(char *) vptr + php_tiff_bytes_per_format[format]) { + if ((char*)vptr_end - (char*)vptr < php_tiff_bytes_per_format[format]) { + exif_error_docref("exif_iif_add_value" EXIFERR_CC, image_info, E_WARNING, "Value too short"); + break; + } if (length>1) { info_value = &info_data->value.list[idex]; } @@ -2176,7 +2189,7 @@ static void exif_iif_add_value(image_inf php_error_docref(NULL, E_WARNING, "Found value of type single"); #endif info_value->f = *(float *)value; - + break; case TAG_FMT_DOUBLE: #ifdef EXIF_DEBUG php_error_docref(NULL, E_WARNING, "Found value of type double"); @@ -2194,9 +2207,9 @@ static void exif_iif_add_value(image_inf /* {{{ exif_iif_add_tag Add a tag from IFD to image_info */ -static void exif_iif_add_tag(image_info_type *image_info, int section_index, char *name, int tag, int format, size_t length, void* value) +static void exif_iif_add_tag(image_info_type *image_info, int section_index, char *name, int tag, int format, size_t length, void* value, size_t value_len) { - exif_iif_add_value(image_info, section_index, name, tag, format, (int)length, value, image_info->motorola_intel); + exif_iif_add_value(image_info, section_index, name, tag, format, (int)length, value, value_len, image_info->motorola_intel); } /* }}} */ @@ -2617,7 +2630,7 @@ static void add_assoc_image_info(zval *v */ static void exif_process_COM (image_info_type *image_info, char *value, size_t length) { - exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_STRING, length-2, value+2); + exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_STRING, length-2, value+2, length-2); } /* }}} */ @@ -2632,17 +2645,17 @@ static void exif_process_CME (image_info if (length>3) { switch(value[2]) { case 0: - exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_UNDEFINED, length, value); + exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_UNDEFINED, length, value, length); break; case 1: - exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_STRING, length, value); + exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_STRING, length, value, length); break; default: php_error_docref(NULL, E_NOTICE, "Undefined JPEG2000 comment encoding"); break; } } else { - exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_UNDEFINED, 0, NULL); + exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_UNDEFINED, 0, NULL, 0); php_error_docref(NULL, E_NOTICE, "JPEG2000 comment section too small"); } } @@ -3237,7 +3250,7 @@ static int exif_process_IFD_in_MAKERNOTE static int exif_process_IFD_TAG(image_info_type *ImageInfo, char *dir_entry, char *offset_base, size_t IFDlength, size_t displacement, int section_index, int ReadNextIFD, tag_table_type tag_table) { size_t length; - int tag, format, components; + unsigned int tag, format, components; char *value_ptr, tagname[64], cbuf[32], *outside=NULL; size_t byte_count, offset_val, fpos, fgot; int64_t byte_count_signed; @@ -3548,7 +3561,7 @@ static int exif_process_IFD_TAG(image_in } } } - exif_iif_add_tag(ImageInfo, section_index, exif_get_tagname(tag, tagname, sizeof(tagname), tag_table), tag, format, components, value_ptr); + exif_iif_add_tag(ImageInfo, section_index, exif_get_tagname(tag, tagname, sizeof(tagname), tag_table), tag, format, components, value_ptr, byte_count); EFREE_IF(outside); return TRUE; } @@ -3710,10 +3723,10 @@ static void exif_process_APP12(image_inf size_t l1, l2=0; if ((l1 = php_strnlen(buffer+2, length-2)) > 0) { - exif_iif_add_tag(ImageInfo, SECTION_APP12, "Company", TAG_NONE, TAG_FMT_STRING, l1, buffer+2); + exif_iif_add_tag(ImageInfo, SECTION_APP12, "Company", TAG_NONE, TAG_FMT_STRING, l1, buffer+2, l1); if (length > 2+l1+1) { l2 = php_strnlen(buffer+2+l1+1, length-2-l1-1); - exif_iif_add_tag(ImageInfo, SECTION_APP12, "Info", TAG_NONE, TAG_FMT_STRING, l2, buffer+2+l1+1); + exif_iif_add_tag(ImageInfo, SECTION_APP12, "Info", TAG_NONE, TAG_FMT_STRING, l2, buffer+2+l1+1, l2); } } #ifdef EXIF_DEBUG @@ -4583,7 +4596,7 @@ PHP_FUNCTION(exif_read_data) if (ImageInfo.Thumbnail.size) { if (read_thumbnail) { /* not exif_iif_add_str : this is a buffer */ - exif_iif_add_tag(&ImageInfo, SECTION_THUMBNAIL, "THUMBNAIL", TAG_NONE, TAG_FMT_UNDEFINED, ImageInfo.Thumbnail.size, ImageInfo.Thumbnail.data); + exif_iif_add_tag(&ImageInfo, SECTION_THUMBNAIL, "THUMBNAIL", TAG_NONE, TAG_FMT_UNDEFINED, ImageInfo.Thumbnail.size, ImageInfo.Thumbnail.data, ImageInfo.Thumbnail.size); } if (!ImageInfo.Thumbnail.width || !ImageInfo.Thumbnail.height) { /* try to evaluate if thumbnail data is present */
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