SB2020021146 - Remote code execution in Microsoft Exchange
Published: February 11, 2020 Updated: August 3, 2023
Security Bulletin ID
SB2020021146
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Deserialization of untrusted data (CVE-ID: CVE-2020-0688)
The vulnerability allows a remote attacker to execute arbitrary on the system.
The vulnerability exists due to an input validation error within the Microsoft Exchange OCP interface when processing VIEWSTATE data. A remote authenticated attacker can send a specially crafted HTTP request to a vulnerable Exchange server and execute arbitrary code on the target system.
Note, this vulnerability is being actively exploited in the wild.
Remediation
Install update from vendor's website.