Signature Detail

HTTP: Web Proxy Autodiscovery Protocol Configuration File Request

This signature detects connections to Web Proxy Auto Discovery hosts. An attacker can set up a rogue WPAD service and redirect Web traffic by altering a user's proxy setting. Note: this signature triggers on legitimate connections to WPAD servers. Please refer to your product documentation regarding how to configure your policy to ignore traffic from specific hosts.

Extended Description

Microsoft Web Proxy Auto-Discovery is prone to a vulnerability that may allow attackers to obtain sensitive information that may lead to further attacks.

Affected Products

• Microsoft internet_explorer 5.0.1 SP1
• Microsoft internet_explorer 5.0.1 SP2
• Microsoft internet_explorer 5.0.1 SP3
• Microsoft internet_explorer 5.0.1 SP4
• Microsoft internet_explorer 6.0
• Microsoft internet_explorer 6.0 SP1
• Microsoft internet_explorer 7.0
• Microsoft windows_2000_advanced_server SP1
• Microsoft windows_2000_advanced_server SP2
• Microsoft windows_2000_advanced_server SP3
• Microsoft windows_2000_advanced_server SP4
• Microsoft windows_2000_advanced_server
• Microsoft windows_2000_datacenter_server SP1
• Microsoft windows_2000_datacenter_server SP2
• Microsoft windows_2000_datacenter_server SP3
• Microsoft windows_2000_datacenter_server SP4
• Microsoft windows_2000_datacenter_server
• Microsoft windows_2000_professional SP1
• Microsoft windows_2000_professional SP2
• Microsoft windows_2000_professional SP3
• Microsoft windows_2000_professional SP4
• Microsoft windows_2000_professional
• Microsoft windows_2000_server SP1
• Microsoft windows_2000_server SP2
• Microsoft windows_2000_server SP3
• Microsoft windows_2000_server SP4
• Microsoft windows_2000_server
• Microsoft windows_server_2003 SP1
• Microsoft windows_server_2003 SP2
• Microsoft windows_server_2003_datacenter_edition SP1
• Microsoft windows_server_2003_datacenter_edition SP1 Beta 1
• Microsoft windows_server_2003_datacenter_edition
• Microsoft windows_server_2003_datacenter_edition_itanium SP1
• Microsoft windows_server_2003_datacenter_edition_itanium SP1 Beta 1
• Microsoft windows_server_2003_datacenter_edition_itanium
• Microsoft windows_server_2003_datacenter_x64_edition SP2
• Microsoft windows_server_2003_datacenter_x64_edition
• Microsoft windows_server_2003_enterprise_edition SP1
• Microsoft windows_server_2003_enterprise_edition SP1 Beta 1
• Microsoft windows_server_2003_enterprise_edition
• Microsoft windows_server_2003_enterprise_edition_itanium SP1
• Microsoft windows_server_2003_enterprise_edition_itanium SP1 Beta 1
• Microsoft windows_server_2003_enterprise_edition_itanium
• Microsoft windows_server_2003_enterprise_x64_edition SP2
• Microsoft windows_server_2003_enterprise_x64_edition
• Microsoft windows_server_2003_itanium SP1
• Microsoft windows_server_2003_itanium SP2
• Microsoft windows_server_2003_itanium
• Microsoft windows_server_2003_standard_edition SP1
• Microsoft windows_server_2003_standard_edition SP2
• Microsoft windows_server_2003_standard_edition
• Microsoft windows_server_2003_standard_x64_edition
• Microsoft windows_server_2003_web_edition SP1
• Microsoft windows_server_2003_web_edition SP2
• Microsoft windows_server_2003_web_edition
• Microsoft windows_server_2003_x64 SP1
• Microsoft windows_server_2003_x64 SP2
• Microsoft windows_vista Beta
• Microsoft windows_vista Beta 1
• Microsoft windows_vista Beta 2
• Microsoft windows_vista Business
• Microsoft windows_vista Enterprise
• Microsoft windows_vista Home Basic
• Microsoft windows_vista Home Premium
• Microsoft windows_vista Ultimate
• Microsoft windows_vista
• Microsoft windows_vista_december_ctp
• Microsoft windows_vista_x64_edition
• Microsoft windows_xp
• Microsoft windows_xp_64-bit_edition SP1
• Microsoft windows_xp_64-bit_edition
• Microsoft windows_xp_64-bit_edition_version_2003 SP1
• Microsoft windows_xp_home SP1
• Microsoft windows_xp_home SP2
• Microsoft windows_xp_home
• Microsoft windows_xp_media_center_edition SP1
• Microsoft windows_xp_media_center_edition SP2
• Microsoft windows_xp_media_center_edition
• Microsoft windows_xp_professional SP1
• Microsoft windows_xp_professional SP2
• Microsoft windows_xp_professional
• Microsoft windows_xp_professional_x64_edition SP2
• Microsoft windows_xp_professional_x64_edition
• Microsoft windows_xp_tablet_pc_edition SP1
• Microsoft windows_xp_tablet_pc_edition SP2
• Microsoft windows_xp_tablet_pc_edition

References

• BugTraq: 26686
• CVE: CVE-2007-5355
• CVE: CVE-2009-0093
• CVE: CVE-2009-0094
• URL: http://www.microsoft.com/technet/security/advisory/945713.mspx
• URL: http://www.microsoft.com/technet/security/Bulletin/MS09-008.mspx