CVE-2017-0021 Memory corruption in Hyper-V vSMB
Attackers can execute arbitrary code on the host OS by exploiting improper validation of vSMB packet data in Microsoft Hyper-V.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-0021?
CVE-2017-0021 is a critical memory corruption vulnerability in Microsoft Windows 10, published on 17 Mar 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Hyper-V in Microsoft Windows 10 1607 and Windows Server 2016 does not properly validate vSMB packet data, which allows attackers to execute arbitrary code on a target OS, aka "Hyper-V System Data Structure Vulnerability." This vulnerability is different from that described in CVE-2017-0095.
Which versions are affected by CVE-2017-0021?
It affects 2 products.
Products include Microsoft Windows 10, Microsoft Windows Server 2016.
How do I fix CVE-2017-0021?
No fix has been published for CVE-2017-0021 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2017-0021 being exploited?
There is no known exploitation of CVE-2017-0021 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 10
- CVE-2015-2426 Microsoft Windows Adobe Type Manager Library Remote Code Execution
- CVE-2015-1769 Microsoft Windows Mount Manager Privilege Escalation
- CVE-2020-1467 Windows Hard Link Elevation of Privilege Vulnerability
- CVE-2021-26424 Windows TCP/IP Remote Code Execution Vulnerability
- CVE-2021-28476 Windows Hyper-V Remote Code Execution Vulnerability
Sources
Also known as GHSA-53gh-w7rv-pj62.