PHP Command Parameter Bug Lets Remote Users Obtain Potentially Sensitive Information and Execute Arbitrary Code
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SecurityTracker Alert ID: 1027022 |
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SecurityTracker URL: http://securitytracker.com/id/1027022
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CVE Reference:
CVE-2012-1823, CVE-2012-2311
(Links to External Site)
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Updated: May 28 2012
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Original Entry Date: May 4 2012
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Impact:
Disclosure of system information, Execution of arbitrary code via network, User access via network
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Fix Available: Yes Vendor Confirmed: Yes Exploit Included: Yes
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Version(s): prior to 5.3.12 and 5.4.2
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Description:
A vulnerability was reported in PHP. A remote user can obtain potentially sensitive information. A remote user can execute arbitrary code on the target system.
A remote user can submit a specially crafted request containing a command line switch to cause the php-cgi binary to execute the parameter.
Systems where PHP is used in a CGI-based setup (e.g., Apache mod_cgi) may be affected.
Systems using Apache mod_php or nginx with php-fpm are not affected.
A demonstration exploit URL is provided:
http://[target]/index.php?-s
This vulnerability is being actively exploited.
The original advisory is available at:
http://eindbazen.net/2012/05/php-cgi-advisory-cve-2012-1823/
De Eindbazen reported this vulnerability.
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Impact:
A remote user can obtain potentially sensitive information.
A remote user can execute arbitrary code on the target system.
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Solution:
The vendor issued a fix (5.3.12, 5.4.2) for CVE-2012-1823. It was later determined that the fix does not fully correct the vulnerability [CVE-2012-2311].
The vendor has issued a fix (5.3.13, 5.4.3) for CVE-2012-2311.
The vendor's original advisory is available at:
http://www.php.net/archive/2012.php#id2012-05-03-1
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Vendor URL: www.php.net/archive/2012.php#id2012-05-03-1 (Links to External Site)
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Cause:
Access control error
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Underlying OS:
Linux (Any), UNIX (Any), Windows (Any)
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Message History:
This archive entry has one or more follow-up message(s) listed below.
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Source Message Contents
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Date: Fri, 04 May 2012 15:14:32 +0000
Subject: PHP
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http://www.php.net/archive/2012.php#id2012-05-03-1
> There is a vulnerability in certain CGI-based setups (Apache+mod_php and
> nginx+php-fpm are not affected) that has gone unnoticed for at least 8 years.
http://eindbazen.net/2012/05/php-cgi-advisory-cve-2012-1823/
CVE-2012-1823
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