Microsoft Security Response Center

**How could an attacker exploit this vulnerability?** An authenticated attacker with normal privileges could send a modified XPS file to a shared printer, which can result in a remote code execution.

**What type of information could be disclosed by this vulnerability?** An attacker who successfully exploited this vulnerability could potentially read small portions of heap memory.

**How could an attacker exploit this vulnerability?** To exploit this vulnerability, an attacker on the same subnet as the target system would need to send a specially crafted packet to a server configured as a Network Load Balancing cluster host.

Mitigation refers to a setting, common configuration, or general best-practice, existing in a default state, that could reduce the severity of exploitation of a vulnerability. The following mitigating factors might be helpful in your situation: Only systems with the IKE and AuthIP IPsec Keying Modules running are vulnerable to this attack. You can run either of the following commands to check the running status of this service: PS: C:\> Get-Service Ikeext * OR Cmd: C:\> sc query ikeext This mitigation could have negative affects on your IPSec functionality. Microsoft strongly recommends updating your system with the latest Windows security updates.

**According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?** An attacker must send the user a malicious input file and convince the user to open said input file.

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

**According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?** Successful exploitation of this vulnerability requires an attacker to win a race condition.

**How could an attacker exploit this vulnerability?** In a network-based attack an attacker would need to have the privileges to query the Domain Name Service (DNS). If the timing of DNS queries is perfect, the attacker could execute code remotely on the target server.

**How could an attacker successfully exploit this vulnerability?** An attacker could convince a user on the target device to open a maliciously crafted HTA file designed to appear as a legitimately signed WIM file (Windows Imaging Format).

**According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?** Successful exploitation of this vulnerability requires an attacker to gather information specific to the environment of the targeted component.