TITLE:
php-exec-dir Command Execution Bypass Vulnerability

SECUNIA ADVISORY ID:
SA11928

VERIFY ADVISORY:
http://secunia.com/advisories/11928/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass

WHERE:
>From remote

SOFTWARE:
php-exec-dir
http://secunia.com/product/3612/

DESCRIPTION:
VeNoMouS has reported a vulnerability in php-exec-dir, which can be
exploited by malicious users to bypass certain security
restrictions.

php-exec-dir is used to limit execution of external commands when
"safe mode" is disabled. However, it is possible to bypass this
protection due to an input validation error by including a ";"
character before the command to be executed.

Successful exploitation requires that a user can upload PHP scripts
to an affected system or specify commands in another way.

SOLUTION:
Use the "safe mode" functionality instead, if this kind of protection
is required.

PROVIDED AND/OR DISCOVERED BY:
VeNoMouS

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