CVE-2020-0856: Active Directory Information Disclosure Vulnerability
First published: Fri Sep 11 2020(Updated: )
<p>An information disclosure vulnerability exists when Active Directory integrated DNS (ADIDNS) mishandles objects in memory. An authenticated attacker who successfully exploited this vulnerability would be able to read sensitive information about the target system.</p> <p>To exploit this condition, an authenticated attacker would need to send a specially crafted request to the AD|DNS service. Note that the information disclosure vulnerability by itself would not be sufficient for an attacker to compromise a system. However, an attacker could combine this vulnerability with additional vulnerabilities to further exploit the system.</p> <p>The update addresses the vulnerability by correcting how Active Directory integrated DNS (ADIDNS) handles objects in memory.</p>
Credit: secure@microsoft.com secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| =sp2 | ||
| =sp2 | ||
| =r2 | ||
| =1903 | ||
| =1909 | ||
| =2004 | ||
| Microsoft Windows Server 2008 | =sp2 | |
| Microsoft Windows Server 2008 | =sp2 | |
| Microsoft Windows Server 2012 | ||
| Microsoft Windows Server 2012 | =r2 | |
| Microsoft Windows Server 2016 | ||
| Microsoft Windows Server 2016 | =1903 | |
| Microsoft Windows Server 2016 | =1909 | |
| Microsoft Windows Server 2016 | =2004 | |
| Microsoft Windows Server 2019 |
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Frequently Asked Questions
What is CVE-2020-0856?
CVE-2020-0856 is an information disclosure vulnerability that exists when Active Directory integrated DNS (ADIDNS) mishandles objects in memory.
What is the severity of CVE-2020-0856?
The severity of CVE-2020-0856 is medium, with a severity value of 6.5.
Which software versions are affected by CVE-2020-0856?
CVE-2020-0856 affects the following software versions: Microsoft Windows Server 2008 SP2, Microsoft Windows Server 2012, Microsoft Windows Server 2012 R2, Microsoft Windows Server 2016 (all versions), and Microsoft Windows Server 2019.
How can I fix CVE-2020-0856?
To fix CVE-2020-0856, apply the security update provided by Microsoft through the official Microsoft website.
Where can I find more information about CVE-2020-0856?
You can find more information about CVE-2020-0856 on Microsoft's official security guidance advisory page: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0856
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