CVE-2017-8758 : Security Advisory and Response
Learn about CVE-2017-8758, an elevation of privilege vulnerability in Microsoft Exchange Server 2016. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
Microsoft Exchange Server 2016 is susceptible to an elevation of privilege vulnerability, also known as the "Microsoft Exchange Cross-Site Scripting Vulnerability." This CVE was published on September 12, 2017.
Understanding CVE-2017-8758
This CVE involves a security issue in Microsoft Exchange Server 2016 that could lead to an elevation of privilege if web requests by Microsoft Exchange Outlook Web Access (OWA) are mishandled.
What is CVE-2017-8758?
An elevation of privilege vulnerability in Microsoft Exchange Server 2016 due to incorrect handling of web requests by Microsoft Exchange OWA.
The Impact of CVE-2017-8758
The vulnerability could allow an attacker to elevate their privileges within the Exchange Server environment, potentially leading to unauthorized access to sensitive information or system compromise.
Technical Details of CVE-2017-8758
Microsoft Exchange Server 2016 Cumulative Update 6 is affected by this vulnerability.
Vulnerability Description
- An elevation of privilege vulnerability in Microsoft Exchange Server 2016
- Occurs when Microsoft Exchange OWA fails to handle web requests correctly
Affected Systems and Versions
- Product: Microsoft Exchange Server 2016
- Vendor: Microsoft Corporation
- Version: Microsoft Exchange Server 2016 Cumulative Update 6
Exploitation Mechanism
- Attackers could exploit this vulnerability by sending specially crafted web requests to the Exchange OWA, allowing them to gain elevated privileges.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent the exploitation of CVE-2017-8758.
Immediate Steps to Take
- Apply security patches and updates provided by Microsoft promptly
- Monitor and restrict access to the Exchange Server environment
- Implement strong authentication mechanisms and access controls
Long-Term Security Practices
- Regularly update and patch all software and systems within the network
- Conduct security assessments and audits to identify and remediate vulnerabilities
- Educate users and administrators about safe computing practices
Patching and Updates
- Microsoft has released security updates to address this vulnerability
- Ensure that the Exchange Server is updated with the latest patches to mitigate the risk of exploitation