CVE-2020-0856 Active Directory Information Disclosure Vulnerability
An authenticated attacker can read sensitive system information via a crafted request to Active Directory integrated DNS.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-0856?
CVE-2020-0856 is a medium-severity vulnerability in Microsoft Windows Server 2008, published on 11 Sep 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
<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>
Which versions are affected by CVE-2020-0856?
It affects 4 products.
Products include Microsoft Windows Server 2008, Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019.
How do I fix CVE-2020-0856?
No fix has been published for CVE-2020-0856 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-0856 being exploited?
There is no known exploitation of CVE-2020-0856 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows Server 2008
Sources
Also known as GHSA-hg96-hf3m-f7hp.