Vulnerability identifier: #VU20973
Vulnerability risk: Medium
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:
CWE-ID:
CWE-119
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Windows
Operating systems & Components /
Operating system
Windows Server
Operating systems & Components /
Operating system
Vendor: Microsoft
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the ws2ifsl.sys (Winsock). A local user can run a specially crafted application, trigger memory corruption and execute arbitrary code on the target system with elevated privileges.
Note, this vulnerability is being actively exploited in the wild.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Windows: 7, 8.1 - 8.1 RT, 10 - 10 1903
Windows Server: 2008 - 2019 1903
External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1215
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.