Microsoft Exchange Server contains a vulnerability that could allow an authenticated, remote attacker to cause a denial of service condition. Updates are available.
Microsoft Exchange Server contains a vulnerability that could allow an authenticated, remote attacker to cause a denial of service (DoS) condition.
The vulnerability is due to improper processing of RSS feeds. An authenticated, remote attacker could exploit the vulnerability by creating a malicious RSS feed on the Exchange Server. If successful, the attacker could cause Exchange services to become unresponsive, resulting in a DoS condition.
Microsoft confirmed the vulnerability in a security bulletin and released software updates.
Microsoft Exchange Server 2007 SP3 and prior and Microsoft Exchange Server 2010 SP2 and prior are vulnerable.
Only current users of a vulnerable system with valid user credentials could exploit the vulnerability, decreasing the likelihood of exploitation.
Microsoft has released a security bulletin at the following link: MS12-080
An authenticated, remote attacker could exploit the vulnerability to cause Exchange services to become unavailable, rendering mailboxes unavailable to legitimate users and resulting in a DoS condition.
The vulnerability is due to improper processing of RSS feeds.
An authenticated, remote attacker with a valid Exchange account could exploit the vulnerability by creating a malicious RSS feed in the affected application. When processed, the RSS feed could cause Exchange services to become unresponsive, resulting in a DoS condition.
Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to have application access.
Administrators are advised to monitor affected systems.
Microsoft customers can obtain updates directly by using the links in the security bulletin. These updates are also distributed by Windows automatic update features and available on the Microsoft Update service. Microsoft Windows Server Update Services (WSUS), Systems Management Server, and System Center Configuration Manager can assist administrators in deploying software updates.
The security vulnerability applies to the following combinations of products.
2010 Base, SP1, SP2 | 2007 Base, SP1, SP2, SP3
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