10 October 2007
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2007.0765 -- [Win] MS07-058 - Vulnerability in RPC Could Allow Denial of Service 10 October 2007 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Windows Vista Windows Server 2003 Windows XP Windows 2000 Publisher: Microsoft Operating System: Windows Impact: Denial of Service Access: Remote/Unauthenticated CVE Names: CVE-2007-2228 Original Bulletin: http://www.microsoft.com/technet/security/bulletin/ms07-058.mspx - --------------------------BEGIN INCLUDED TEXT-------------------- Microsoft Security Bulletin MS07-058 - Important Vulnerability in RPC Could Allow Denial of Service (933729) Affected Software - Microsoft Windows 2000 Service Pack 4 - Windows XP Service Pack 2 - Windows XP Professional x64 Edition - Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2 - Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition Service Pack 2 - Windows Server 2003 with SP1 for Itanium-based Systems and Windows Server 2003 with SP2 for Itanium-based Systems - Windows Vista - Windows Vista x64 Edition Vulnerability Details RPC Authentication Vulnerability Could Allow Denial of Service - CVE-2007-2228 A denial of service vulnerability exists in the remote procedure call (RPC) facility due to a failure in communicating with the NTLM security provider when performing authentication of RPC requests. An anonymous attacker could exploit the vulnerability by sending a specially crafted RPC authentication request to a computer over the network. An attacker who successfully exploited this vulnerability could cause the computer to stop responding and automatically restart. Workarounds for RPC Authentication Vulnerability Could Allow Denial of Service - CVE-2007-2228 - Block the following at the firewall: - UDP ports 135, 137, 138, and 445, and TCP ports 135, 139, 445, and 593 - All unsolicited inbound traffic on ports greater than 1024 - Any other specifically configured RPC port - To help protect from network-based attempts to exploit this vulnerability, use a personal firewall, such as Windows Firewall, which is included with Windows XP and with Windows Server 2003. - To help protect from network-based attempts to exploit this vulnerability, enable advanced TCP/IP filtering on systems that support this feature. - To help protect from network-based attempts to exploit this vulnerability, block the affected ports by using IPSec on the affected systems. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to email@example.com and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: firstname.lastname@example.org Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBRwwc9ih9+71yA2DNAQLNpAP+IEUpd10fnKd7K0t7TlsAhPIxptQXHo2j nhINypdHCcYNbX4DacZ1dHzGRhf8Fja1TY7CnOgLh6BMd5oYDXXsdxXqce66EMmC yG1ZKaa9qRj4HO0+O15POFptXlxCQBW24OOUWsnT3ObskaFmYqSn/bM4bwAgIVh0 8hfMfz5QbSA= =ePcC -----END PGP SIGNATURE-----