Microsoft Security Advisory (975497) published
Microsoft Security Advisory (975497)
Vulnerabilities in SMB Could Allow Remote Code Execution
Microsoft is investigating new public reports of a possible vulnerability in Microsoft Server Message Block (SMB) implementation. We are not aware of attacks that try to use the reported vulnerabilities or of customer impact at this time.
Workarounds
- Disable SMB v2. Impact of workaround. Host will not be able to communicate using SMB2.
- Block TCP ports 139 and 445 at the firewall. Impact of Workaround: Several Windows services use the affected ports. Blocking connectivity to the ports may cause various applications or services to not function
http://www.microsoft.com/technet/security/advisory/975497.mspx
Our investigation has shown that Windows Vista, Windows Server 2008 and Windows 7 RC are affected by this vulnerability. Windows 7 RTM, Windows Server 2008 R2, Windows XP and Windows 2000 are not affected by this vulnerability.
http://blogs.technet.com/msrc/archive/2009/09/08/microsoft-security-advisory-975497-released.aspx