CVE-2019-1215

Microsoft Windows Privilege Escalation Vulnerability

Microsoft WindowsOperating systems

CVSS

7.8High

ExploitationExploited in the wildAdded to KEV 3 Nov 2021. Known ransomware useCISA KEV

Exploit odds (EPSS)19.3%Chance of exploitation activity in the next 30 days, higher than 97% of CVEs. Scored 23 Oct 2026FIRST EPSS

Fixed inNone listedNo source names a fixed version. Check the vendor advisory below

Federal deadline3 May 2022Remediation due date for US federal agenciesCISA KEV

CISA required actionApply updates per vendor instructions. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

11 Sep 2019, 21:24 UTCPublishedCVE List
7 Jan 2020Exploit code publicExploit-DB
3 Nov 2021Added to CISA KEVCISA KEV

Public exploit code and templates 1

Local exploitMicrosoft Windows 10 (19H1 1901 x64) - 'ws2ifsl.sys' Use After Free Local Privilege Escalation (kASLR kCFG SMEP) 7 Jan 2020Exploit-DB

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

Description

Microsoft Windows contains an unspecified vulnerability due to the way ws2ifsl.sys (Winsock) handles objects in memory, allowing for privilege escalation. Successful exploitation allows an attacker to execute code with elevated privileges.

Text from CVE List

Affected versions 41

Windowsaffected: 7 for 32-bit Systems Service Pack 1CVE List
Windowsaffected: 7 for x64-based Systems Service Pack 1CVE List
Windowsaffected: 8.1 for 32-bit systemsCVE List
Windowsaffected: 8.1 for x64-based systemsCVE List
Windowsaffected: RT 8.1CVE List
Windowsaffected: 10 for 32-bit SystemsCVE List
Windowsaffected: 10 for x64-based SystemsCVE List
Windowsaffected: 10 Version 1607 for 32-bit SystemsCVE List
Windowsaffected: 10 Version 1607 for x64-based SystemsCVE List
Windowsaffected: 10 Version 1703 for 32-bit SystemsCVE List
Windowsaffected: 10 Version 1703 for x64-based SystemsCVE List
Windowsaffected: 10 Version 1709 for 32-bit SystemsCVE List
Windowsaffected: 10 Version 1709 for x64-based SystemsCVE List
Windowsaffected: 10 Version 1803 for 32-bit SystemsCVE List
Windowsaffected: 10 Version 1803 for x64-based SystemsCVE List
Windowsaffected: 10 Version 1803 for ARM64-based SystemsCVE List
Windowsaffected: 10 Version 1809 for 32-bit SystemsCVE List
Windowsaffected: 10 Version 1809 for x64-based SystemsCVE List
Windowsaffected: 10 Version 1809 for ARM64-based SystemsCVE List
Windowsaffected: 10 Version 1709 for ARM64-based SystemsCVE List
Windows Serveraffected: 2008 R2 for x64-based Systems Service Pack 1 (Core installation)CVE List
Windows Serveraffected: 2008 R2 for Itanium-Based Systems Service Pack 1CVE List
Windows Serveraffected: 2008 R2 for x64-based Systems Service Pack 1CVE List
Windows Serveraffected: 2008 for 32-bit Systems Service Pack 2 (Core installation)CVE List
Windows Serveraffected: 2012CVE List
Windows Serveraffected: 2012 (Core installation)CVE List
Windows Serveraffected: 2012 R2CVE List
Windows Serveraffected: 2012 R2 (Core installation)CVE List
Windows Serveraffected: 2016CVE List
Windows Serveraffected: 2016 (Core installation)CVE List
Windows Serveraffected: version 1803 (Core Installation)CVE List
Windows Serveraffected: 2019CVE List
Windows Serveraffected: 2019 (Core installation)CVE List
Windows Serveraffected: 2008 for Itanium-Based Systems Service Pack 2CVE List
Windows Serveraffected: 2008 for 32-bit Systems Service Pack 2CVE List
Windows Serveraffected: 2008 for x64-based Systems Service Pack 2CVE List
Windows Serveraffected: 2008 for x64-based Systems Service Pack 2 (Core installation)CVE List
Windows 10 Version 1903 for 32-bit Systemsaffected: unspecifiedCVE List
Windows 10 Version 1903 for x64-based Systemsaffected: unspecifiedCVE List
Windows 10 Version 1903 for ARM64-based Systemsaffected: unspecifiedCVE List
Windows Server, version 1903 (Server Core installation)affected: unspecifiedCVE List