TITLE:
Windows XP Firewall Dial-Up Security Issue

SECUNIA ADVISORY ID:
SA13492

VERIFY ADVISORY:
http://secunia.com/advisories/13492/

CRITICAL:
Less critical

IMPACT:
Security Bypass

WHERE:
>From remote

OPERATING SYSTEM:
Microsoft Windows XP Home Edition
http://secunia.com/product/16/
Microsoft Windows XP Professional
http://secunia.com/product/22/

DESCRIPTION:
A security issue has been reported in Windows XP SP2, which
erroneously causes the firewall to allow connections from the
Internet.

The problem is caused by the way certain dialers configure the
routing table and how local subnets are interpreted when the "My
network (subnet) only" option is used in the Microsoft Windows
Firewall.

This issue only affects Windows XP with Service Pack 2 in combination
with a dial-up network connection.

SOLUTION:
Apply update:
http://www.microsoft.com/downloads/details.aspx?familyid=da66a0ac-55ca-4591-b3e6-d78695899141&displaylang=en

PROVIDED AND/OR DISCOVERED BY:
Reported by vendor.

ORIGINAL ADVISORY:
http://support.microsoft.com/kb/886185

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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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