KLA11664 Multiple vulnerabilities in Microsoft Exchange Server

Multiple vulnerabilities were found in Microsoft Exchange Server. Malicious users can exploit these vulnerabilities to gain privileges, execute arbitrary code.

Below is a complete list of vulnerabilities:

1. An elevation of privilege vulnerability in Microsoft Exchange Server can be exploited remotely to gain privileges.
2. A memory corruption vulnerability in Microsoft Exchange can be exploited remotely via specially crafted email to execute arbitrary code.

Original advisories

CVE-2020-0692

CVE-2020-0688

Exploitation

Public exploits exist for this vulnerability.

Malware exists for this vulnerability. Usually such malware is classified as Exploit. More details.

Related products

Microsoft-Exchange-Server

CVE list

CVE-2020-0692 critical

CVE-2020-0688 critical

KB list

4536988

4536989

4536987

Solution

Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)

Impacts

• ACE

Arbitrary code execution. Exploitation of vulnerabilities with this impact can lead to executing by abuser any code or commands at vulnerable machine or process.

• PE

Privilege escalation. Exploitation of vulnerabilities with this impact can lead to performing by abuser actions, which are normally disallowed for current role.

Affected Products

• Microsoft Exchange Server 2016 Cumulative Update 14Microsoft Exchange Server 2016 Cumulative Update 15Microsoft Exchange Server 2013 Cumulative Update 23Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 30Microsoft Exchange Server 2019 Cumulative Update 4Microsoft Exchange Server 2019 Cumulative Update 3