SB2020120847 - Multiple vulnerabilities in Microsoft Exchange
Published: December 8, 2020 Updated: April 23, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 6 secuirty vulnerabilities.
1) Input validation error (CVE-ID: CVE-2020-17144)
The vulnerability allows a remote user to execute arbitrary code on the system.
The vulnerability exists due to insufficient validation of user-supplied input when processing cmdlet argument. A remote privileged user can pass specially crafted input to the exchange server and execute arbitrary code.
2) Information disclosure (CVE-ID: CVE-2020-17143)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application in Microsoft Exchange. A remote authenticated attacker can gain unauthorized access to sensitive information on the system.
3) Input validation error (CVE-ID: CVE-2020-17142)
The vulnerability allows a remote user to execute arbitrary code on the system.
The vulnerability exists due to insufficient validation of user-supplied input in Microsoft Exchange. A remote administrator can pass specially crafted input to the application and execute arbitrary code on the target system.
4) Input validation error (CVE-ID: CVE-2020-17141)
The vulnerability allows a remote user to execute arbitrary code on the system.
The vulnerability exists due to insufficient validation of user-supplied input in Microsoft Exchange. A remote administrator can pass specially crafted input to the application and execute arbitrary code on the target system.
5) Input validation error (CVE-ID: CVE-2020-17132)
The vulnerability allows a remote user to execute arbitrary code on the system.
The vulnerability exists due to insufficient validation of user-supplied input in Microsoft Exchange. A remote administrator can pass specially crafted input to the application and execute arbitrary code on the target system.
6) Input validation error (CVE-ID: CVE-2020-17117)
The vulnerability allows a remote user to execute arbitrary code on the system.
The vulnerability exists due to insufficient validation of user-supplied input in Microsoft Exchange. A remote administrator can pass specially crafted input to the application and execute arbitrary code on the target system.
Remediation
Install update from vendor's website.
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17144
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17143
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17142
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17141
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17132
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17117