Remote code execution in Microsoft Windows SMBv3
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-0796 |
| CWE-ID | CWE-20 |
| Exploitation vector | Network |
| Public exploit | Vulnerability #1 is being exploited in the wild. |
| Vulnerable software Subscribe |
Windows Operating systems & Components / Operating system Windows Server Operating systems & Components / Operating system |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains information about 1 vulnerabilities.
Updated: 12.03.2020
Assigned CVE-ID to the vulnerability, changed bulletin status to patched.
Updated: 13.03.2020
Added link to PoC, changed CVSS metrics.
1) Input validation error
EUVDB-ID: #VU25980
Risk: High
CVSSv3.1: 8.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]
CVE-ID: CVE-2020-0796
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists in the way that the Microsoft Server Message Block 3.1.1 (SMBv3) protocol handles certain requests. A remote attacker can trick a client to connect to a malicious SMB server and execute arbitrary code on the system.
Install update from vendor's website.
Vulnerable software versionsWindows: 10 1903 - 10 1909
Windows Server: 2019 1903 - 2019 1909
External linkshttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200005
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0796
http://github.com/Dhoomralochana/Scanners-for-CVE-2020-0796-Testing
http://github.com/ClarotyICS/CVE2020-0796
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
