从一道CTF题到HTTP请求走私攻击

合天网安实验室发布时间：2021-11-03 16:20:00 ，浏览量：0

前言

最近在复盘之前做过的CTF题时，发现有一道比较有趣。是用的PHP 字符串解析特性Bypass的思路，但这道题远不止于此，还有另一种解法，HTTP请求走私攻击。

RoarCTF 2019 Easy Calc

先看下源码：


    
        
        
        
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	    基本
        文件
        流程
        错误
        SQL
        调试
    

		    
    
	请求信息 : 2025-03-14 19:06:30 HTTP/2.0 GET : /home/article/detail/id/381462.html
运行时间 : 0.0719s ( Load:0.0098s Init:0.0011s Exec:0.0513s Template:0.0097s )
吞吐率 : 13.91req/s
内存开销 : 1,933.63 kb
查询信息 : 18 queries 0 writes 
文件加载 : 36
缓存信息 : 5 gets 0 writes 
配置加载 : 132
会话信息 : SESSION_ID=naib5eb0ovalnveeren85gpn0g
    
    
        
    
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/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Behavior/WriteHtmlCacheBehavior.class.php ( 1.43 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Behavior/ShowPageTraceBehavior.class.php ( 5.27 KB )
    
    
        
    
	[ app_init ] --START--
Run Behavior\BuildLiteBehavior [ RunTime:0.000009s ]
[ app_init ] --END-- [ RunTime:0.000038s ]
[ app_begin ] --START--
Run Behavior\ReadHtmlCacheBehavior [ RunTime:0.000422s ]
[ app_begin ] --END-- [ RunTime:0.000459s ]
[ view_parse ] --START--
[ template_filter ] --START--
Run Behavior\ContentReplaceBehavior [ RunTime:0.000078s ]
[ template_filter ] --END-- [ RunTime:0.000101s ]
Run Behavior\ParseTemplateBehavior [ RunTime:0.007557s ]
[ view_parse ] --END-- [ RunTime:0.007577s ]
[ view_filter ] --START--
Run Behavior\WriteHtmlCacheBehavior [ RunTime:0.000156s ]
[ view_filter ] --END-- [ RunTime:0.000171s ]
[ app_end ] --START--
    
    
        
    
	[2] session_save_path(): open_basedir restriction in effect. File(/var/lib/php/session) is not within the allowed path(s): (/www/wwwroot/www.chaojiit.com/:/tmp/) /www/wwwroot/www.chaojiit.com/ThinkPHP/Common/functions.php 第 1239 行.
[8192] Array and string offset access syntax with curly braces is deprecated /www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Cache/Driver/File.class.php 第 59 行.
[8] Undefined variable: user /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 34 行.
[8] Undefined variable: user /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 134 行.
[8] Trying to access array offset on value of type null /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 134 行.
[8] Undefined variable: user /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 135 行.
[8] Trying to access array offset on value of type null /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 135 行.
[8] Undefined variable: pinglun_list /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 144 行.
[8] Undefined variable: top_list /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 179 行.
    
    
        
    
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SELECT * FROM `menu` WHERE `fid` = 0 AND `status` = 1  [ RunTime:0.0002s ]
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SELECT * FROM `menu` WHERE `fid` = 2 AND `status` = 1  [ RunTime:0.0001s ]
SELECT * FROM `menu` WHERE `fid` = 3 AND `status` = 1  [ RunTime:0.0001s ]
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SELECT * FROM `article` WHERE `id` = 381462 LIMIT 1   [ RunTime:0.0002s ]
SHOW COLUMNS FROM `bloger` [ RunTime:0.0004s ]
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SELECT COUNT(*) AS tp_count FROM `article` WHERE `bloger_id` = 570 LIMIT 1   [ RunTime:0.0003s ]
SHOW COLUMNS FROM `article_content` [ RunTime:0.0002s ]
SELECT `content` FROM `article_content` WHERE `article_id` = 381462 LIMIT 1   [ RunTime:0.0269s ]
SHOW COLUMNS FROM `article_cate` [ RunTime:0.0004s ]
SELECT `name` FROM `article_cate` WHERE `id` = 285 LIMIT 1   [ RunTime:0.0002s ]
SELECT * FROM `article` WHERE `bloger_id` = 570 ORDER BY view_count desc LIMIT 0,10   [ RunTime:0.0029s ]
    
    
        
    
	    
    
    



0.0719s