Risk | High |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2020-17087 |
CWE-ID | CWE-119 |
Exploitation vector | Local |
Public exploit | This vulnerability is being exploited in the wild. |
Vulnerable software |
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: 10.11.2020
Marked bulletin as patched.
EUVDB-ID: #VU48060
Risk: High
CVSSv3.1: 7.5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID: CVE-2020-17087
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to escalate privilege son the system.
The vulnerability exists due to a boundary error within the Windows Kernel Cryptography Driver cng.sys, which exposes a "\Device\CNG" device to user-mode programs and supports a variety of IOCTLs with non-trivial input structures. A local user can run a specially crafted program to trigger memory corruption and execute arbitrary code on the system with elevated privileges.
Note, this vulnerability is being actively exploited in the wild.
Install update from vendor's website.
Vulnerable software versionsWindows: 7 SP1 - 10
Windows Server: 2008 R2 SP1 - 2019 2004
CPE2.3http://bugs.chromium.org/p/project-zero/issues/detail?id=2104
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17087
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.