TITLE:
Apache mod_dosevasive Insecure Temporary File Creation

SECUNIA ADVISORY ID:
SA13725

VERIFY ADVISORY:
http://secunia.com/advisories/13725/

CRITICAL:
Not critical

IMPACT:
Manipulation of data, Privilege escalation

WHERE:
Local system

SOFTWARE:
mod_dosevasive 1.x (module for Apache)
http://secunia.com/product/4480/

DESCRIPTION:
LSS Security Team has reported a weakness in mod_dosevasive for
Apache, which can be exploited by malicious, local users to perform
certain actions on a vulnerable system with escalated privileges.

Temporary files are created insecurely and can be exploited via
symlink attacks to create arbitrary files containing action trace log
information on the system.

Combined with a minor race condition, this can potentially be
exploited to overwrite existing files.

The vulnerability has been reported in versions 1.9 and prior.

SOLUTION:
Grant only trusted users access to a vulnerable system.

PROVIDED AND/OR DISCOVERED BY:
LSS Security Team

ORIGINAL ADVISORY:
http://security.lss.hr/en/index.php?page=details&ID=LSS-2005-01-01

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