Microsoft Security Response Center

*According to the CVSS, the attack vector is Adjacent. What does that mean and how is that different from a Network vector?* This vulnerability's attack is limited at the protocol level to a logically adjacent topology. This means it cannot simply be done across the internet, but instead needs something specific tied to the target. Good examples would include the same shared physical network (such as Bluetooth or IEEE 802.11), logical network (local IP subnet), or from within a secure or otherwise limited administrative domain (MPLS, secure VPN to an administrative network zone). This is common to many attacks that require man-in-the-middle type setups or that rely on initially gaining a foothold in another environment.

*Why is this OpenSSL Software Foundation CVE included in the Security Update Guide?* The vulnerability assigned to this CVE is in OpenSSL Software which is consumed by Microsoft Visual Studio. It is being documented in the Security Update Guide to announce that the latest builds of Visual Studio are no longer vulnerable. Please see Security Update Guide Supports CVEs Assigned by Industry Partners for more information.

*Why is this OpenSSL Software Foundation CVE included in the Security Update Guide?* The vulnerability assigned to this CVE is in OpenSSL Software which is consumed by Microsoft Visual Studio. It is being documented in the Security Update Guide to announce that the latest builds of Visual Studio are no longer vulnerable. Please see Security Update Guide Supports CVEs Assigned by Industry Partners for more information.

*Why is this OpenSSL Software Foundation CVE included in the Security Update Guide?* The vulnerability assigned to this CVE is in OpenSSL Software which is consumed by Microsoft Visual Studio. It is being documented in the Security Update Guide to announce that the latest builds of Visual Studio are no longer vulnerable. Please see Security Update Guide Supports CVEs Assigned by Industry Partners for more information.

*How could an attacker exploit this vulnerability?* The ADFS (Active Directory Federation Services) services are vulnerable during the logout redirect request to cross-site scripting of the post logout redirect URI. An attacker who successfully exploited this vulnerability could leave an application using this ADFS library vulnerable to common XSS attacks.

*What type of information could be disclosed by this vulnerability?* The type of information that could be disclosed if an attacker successfully exploited this vulnerability is sensitive information.

*What type of information could be disclosed by this vulnerability?* The type of information that could be disclosed if an attacker successfully exploited this vulnerability is the contents of Kernel memory. An attacker could read the contents of Kernel memory from a user mode process.

*The CVSS Score says user action is required. What type of user action is required?* A user would have to open a maliciously crafted email sent to Dynamics 365 Customer Engagement.

*What security feature could be bypassed by exploiting this vulnerability?* This vulnerability could allow an attacker to bypass ADFS BannedIPList entries for WS-Trust workflows.

*What type of information could be disclosed by this vulnerability?* An attacker that successfully exploited this vulnerability could recover cleartext passwords from memory.