Microsoft Security Response Center

**What type of information could be disclosed by this vulnerability?** Exploiting this vulnerability could allow the disclosure of initialized or uninitialized memory in the process heap.

**What type of information could be disclosed by this vulnerability?** Exploiting this vulnerability could allow the disclosure of initialized or uninitialized memory in the process heap.

**What privileges could be gained by an attacker who successfully exploited the vulnerability?** An attacker who successfully exploited this vulnerability could gain domain administrator privileges.

**According to the CVSS score, the attack vector is adjacent (AV:A). What does this mean for this vulnerability?** This attack is limited to systems connected to the same network segment as the attacker. The attack cannot be performed across multiple networks (for example, a WAN) and would be limited to systems on the same network switch or virtual network.

The following workaround may be helpful in your situation. In all cases, Microsoft strongly recommends that you install the updates for this vulnerability as soon as they become available even if you plan to leave this workaround in place: **Disable router discovery on IPv6 interface.** You can disable router discovery on the IPv6 interface to prevent attackers from exploiting the vulnerability, with the following PowerShell command: * Set-NetIPInterface -InterfaceIndex \[interface\_index\] -RouterDiscovery Disabled You can disable router discovery on the IPv6 interface to prevent attackers from exploiting the vulnerability, with the following Network Shell (netsh) command: * netsh interface ipv6 set interface \[interface\_name\] routerdiscovery=disabled Please refer to the workaround section of this security bulletin for more information: https://learn.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-006 **Note:** No reboot is needed after making the change...

**What privileges could be gained by an attacker who successfully exploited this vulnerability?** An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

**What privileges could be gained by an attacker who successfully exploited this vulnerability?** An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

The following mitigating factors might be helpful in your situation: Customers who have not configured their DHCP server as a failover are not affected by this vulnerability.

**What privileges could be gained by an attacker who successfully exploited this vulnerability?** An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

**What privileges could be gained by an attacker who successfully exploited this vulnerability?** An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.