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TITLE:
My Firewall Plus Arbitrary File Corruption Vulnerability

SECUNIA ADVISORY ID:
SA13577

VERIFY ADVISORY:
http://secunia.com/advisories/13577/

CRITICAL:
Not critical

IMPACT:
Manipulation of data, DoS

WHERE:
Local system

SOFTWARE:
My Firewall Plus 5.x
http://secunia.com/product/4276/

DESCRIPTION:
Secunia Research has discovered a vulnerability in My Firewall Plus,
which can be exploited by malicious, local users to manipulate the
content of arbitrary files on a vulnerable system.

The vulnerability is caused due to the Log Viewer's export
functionality saving log files without dropping its privileges first.
This can be exploited to corrupt arbitrary files on the system with
logging information.

Successful exploitation requires that the user has access to the Log
Viewer (all users by default).

The vulnerability has been confirmed in version 5.0 (build 1117).
Other versions may also be affected.

NOTE: This vulnerability has been rated "Not critical" as only
trusted users should have access to the configuration and logging
functionality.

SOLUTION:
Update to version 5.0 (build 1119) or apply patch.

Patch:
http://www.webroot.com/services/mfp_patch.exe

Use the "Password Protection" feature to restrict access to the
configuration and logging functionality.

PROVIDED AND/OR DISCOVERED BY:
Carsten Eiram, Secunia Research.

ORIGINAL ADVISORY:
Secunia Research:
http://secunia.com/secunia_research/2004-20/

Webroot:
http://www.webroot.com/services/mfp_advisory.php

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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