Microsoft Security Response Center

**According to the CVSS metric, user interaction is required (UI:R) and privileges required  is low (PR:L). What does that mean for this vulnerability?** An authorized attacker must send the user a malicious file and convince the user to open it.

**Why is the MITRE Corporation the assigning CNA (CVE Numbering Authority)?** CVE-2023-50868 is regarding a vulnerability in DNSSEC validation where an attacker could exploit standard DNSSEC protocols intended for DNS integrity by using excessive resources on a resolver, causing a denial of service for legitimate users. MITRE created this CVE on their behalf. Please see CVE-2023-50868 for more information.

**According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?** This vulnerability could be triggered when a user connects a Windows client to a malicious server.

**According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?** A user would have to restart the compromised service on the server to trigger the 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.

**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.

**What privileges could be gained by an attacker who successfully exploited the vulnerability?** The attacker would gain the rights of the user that is running the affected application.

**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, user interaction is required (UI:R) and privileges required is Low (PR:L). What does that mean for this vulnerability?** An authorized attacker could create a malicious extension and then wait for an authenticated user to create a new Visual Studio project that uses that extension. The result is that the attacker could gain the privileges of the user.

**According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability?** This vulnerability could lead to a contained execution environment escape. Please refer to AppContainer Isolation for more information.