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PHP SSL Module "subjectAltNames" NULL Byte Handling Security Issue

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Release Date:  2013-08-14    Last Update:  2013-12-13    Views:  2,011

Secunia Advisory SA54480

Where:

From remote

Impact:

Spoofing

Solution Status:

Vendor Patch

CVE Reference(s):

Description


A security issue has been reported in PHP, which can be exploited by malicious people to conduct spoofing attacks.

The security issue is caused due to the SSL module not properly handling NULL bytes inside "subjectAltNames" general names in the server SSL certificate. This can be exploited to spoof the server via a MitM (Man-in-the-Middle) attack and subsequently e.g. disclose potentially sensitive information.

The security issue is reported in versions 5.3.27 and prior, versions 5.4.18 and prior, and versions 5.5.2 and prior.


Solution:
Update to a fixed version.

Further details available to Secunia VIM customers

Provided and/or discovered by:
Disclosed by the vendor in a git commit.

Original Advisory:
http://php.net/archive/2013.php#id2013-08-22-1
http://git.php.net/?p=php-src.git;a=commit;h=dcea4ec698dcae39b7bba6f6aa08933cbfee6755
http://git.php.net/?p=php-src.git;a=commit;h=2874696a5a8d46639d261571f915c493cd875897
http://git.php.net/?p=php-src.git;a=commit;h=2b9f5ac2525118bab372d5fc66eb19cabc46f483

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: PHP SSL Module "subjectAltNames" NULL Byte Handling Security Issue

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