NULL pointer dereference in Windows and Windows Server - CVE-2016-7237
Published: November 8, 2016 / Updated: February 6, 2017
Vulnerability identifier: #VU5336
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2016-7237
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: Microsoft
Affected software:
Windows
Windows Server
Windows
Windows Server
Detailed vulnerability description
The vulnerability allows a remote attacker to cause denial of service.
The vulnerability exists due to NULL pointer dereference error when parsing SMB packets within Local Security Authority Subsystem Service (LSASS). A remote authenticated attacker can send specially crafted requests to vulnerable service and cause the target system to become non-responsive.
Successful exploitation of the vulnerability will result in denial of service (DoS).
How to mitigate CVE-2016-7237
Install updates from vendor's website.