Mailing List Archive: PHP <= 5.2.5 Safe Mode Bypass

PHP <= 5.2.5 Safe Mode Bypass

Dec 24, 2007, 3:50 AM

Post #1 of 3 (1097 views)

########################## WwW.BugReport.ir
#########################################
#
# AmnPardaz Security Research & Penetration Testing Group
#
# Title: PHP <= 5.2.5 Safe Mode Bypass
# Vendor: http://www.php.net
# Vulnerable Function: tempnam()
# Vulnerable Version: tested on 5.2.5 , 5.2.4 (prior versions also may
be affected)
# Platform : any
# Exploitation: Local
# Exploit: Available
# Fix Available: No!
###################################################################################

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- Description:
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"PHP is a widely-used general-purpose scripting language that is
especially suited for Web development and can be embedded into HTML."

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- Vulnerability:
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+--> Safe Mode Bypass
string tempnam ( string dir, string prefix )
Creates a file with a unique filename in the specified directory.
Quick review from the source shows that there is open_basedir check but not
Safe mode!
/main/php_open_temporary_file.c
See the related exploit for more details

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- POC
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http://www.bugreport.ir/?/22/exploit
Original advisory: http://www.bugreport.ir/?/22

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- Credit :
####################
AmnPardaz Security Research & Penetration Testing Group
Contact: admin[4t}bugreport{d0t]ir
WwW.BugReport.ir
WwW.AmnPardaz.com

Re: PHP <= 5.2.5 Safe Mode Bypass [ In reply to ]

shsuff at hotmail

Dec 24, 2007, 9:19 AM

Post #2 of 3 (1056 views)

Permalink

Nothing new.
Already found: http://securityreason.com/achievement_securityalert/36/

And this will not bypass safe_mode but open_basedir ...

Re: Re: PHP <= 5.2.5 Safe Mode Bypass [ In reply to ]

trueend5 at yahoo

Dec 25, 2007, 5:20 AM

Post #3 of 3 (1045 views)

Permalink

--- shsuff@hotmail.com wrote:

> Nothing new.
> Already found: http://securityreason.com/achievement_securityalert/36/

I think it’s obvious that this one focuses on safe_mode restriction weakness and that one talks
about open_basedir! The only Similarity between these two advisories is the vulnerable tempnam
function

>
> And this will not bypass safe_mode but open_basedir ...
>

Which one do you talk about , this or that?

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