php/archived-php-src
1
0
Fork 0
mirror of https://github.com/php/php-src.git synced 2026-03-24 00:02:20 +01:00
Code Issues Packages Projects Releases Wiki Activity

Merge branch 'PHP-8.4'

Browse Source 
* PHP-8.4:
  Fix GH-17047: UAF on iconv filter failure
This commit is contained in:
Niels Dossche
2024-12-06 17:44:14 +01:00
parent 912b13a779 c192a341ec
commit e1e20892f9
2 changed files with 20 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
ext/iconv/iconv.c
View File

@@ -2535,7 +2535,8 @@ static php_stream_filter_status_t php_iconv_stream_filter_do_filter(
if (php_iconv_stream_filter_append_bucket(self, stream, filter,
buckets_out, bucket->buf, bucket->buflen, &consumed,
php_stream_is_persistent(stream)) != SUCCESS) {
goto out_failure;
php_stream_bucket_delref(bucket);
return PSFS_ERR_FATAL;
}
php_stream_bucket_delref(bucket);
@@ -2545,7 +2546,7 @@ static php_stream_filter_status_t php_iconv_stream_filter_do_filter(
if (php_iconv_stream_filter_append_bucket(self, stream, filter,
buckets_out, NULL, 0, &consumed,
php_stream_is_persistent(stream)) != SUCCESS) {
goto out_failure;
return PSFS_ERR_FATAL;
}
}
@@ -2554,12 +2555,6 @@ static php_stream_filter_status_t php_iconv_stream_filter_do_filter(
}
return PSFS_PASS_ON;
out_failure:
if (bucket != NULL) {
php_stream_bucket_delref(bucket);
}
return PSFS_ERR_FATAL;
}
/* }}} */

17
ext/iconv/tests/gh17047.phpt Normal file
View File

@@ -0,0 +1,17 @@
--TEST--
GH-17047 (UAF on iconv filter failure)
--EXTENSIONS--
iconv
--FILE--
<?php
$stream = fopen('php://temp', 'w+');
stream_filter_append($stream, 'convert.iconv.UTF-16BE.UTF-8');
stream_filter_append($stream, 'convert.iconv.UTF-16BE.UTF-16BE');
fputs($stream, 'test');
rewind($stream);
var_dump(stream_get_contents($stream));
fclose($stream);
?>
--EXPECTF--
Warning: stream_get_contents(): iconv stream filter ("UTF-16BE"=>"UTF-16BE"): invalid multibyte sequence in %s on line %d
string(0) ""