CVE-2023-36874: Windows Error Reporting Service Elevation of Privilege Vulnerability

Overview

Severity
High (CVSS 7.8)
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Category
Elevation of Privilege
Exploit Status
Actively Exploited
Exploitation Likelihood
Detected
Patch Tuesday
2023-Jul
Released
2023-07-11
EPSS Score
71.15% (percentile: 98.7%)
CISA KEV
Listed — due 2023-08-01

FAQ

What privileges could be gained by an attacker who successfully exploited the vulnerability? An attacker who successfully exploited this vulnerability could gain administrator privileges. According to the CVSS metrics, the attack vector is local (AV:L) and privilege required is low (PR:L). What does that mean for this vulnerability? An attacker must have local access to the targeted machine and must be able to create folders and performance traces on the machine, with restricted privileges that normal users have by default.

Known Exploits (4)

  • Microsoft Windows Error Reporting Service Privilege Escalation Vulnerability — added 2023-12-09T18:55:40Z
  • Microsoft Windows Error Reporting Service Privilege Escalation Vulnerability — added 2023-08-24T22:24:34Z
  • Microsoft Windows Error Reporting Service Privilege Escalation Vulnerability — added 2023-08-23T12:07:40Z
  • Microsoft Windows Error Reporting Service Privilege Escalation Vulnerability — added 2023-08-22T16:27:30Z

Detection & Weaponization (3 sources)

Maturity: Detection

  • Metasploit modules: Microsoft Error Reporting Local Privilege Elevation Vulnerability
  • Sigma rules: Potential CVE-2023-36874 Exploitation - Uncommon Report.Wer Location, Potential CVE-2023-36874 Exploitation - Fake Wermgr.Exe Creation, Potential CVE-2023-36874 Exploitation - Fake Wermgr Execution
  • GitHub PoC: 4 repositories

Affected Products (33)

Windows

  • Windows 10 Version 1809 for 32-bit Systems
  • Windows 10 Version 1809 for x64-based Systems
  • Windows 10 Version 1809 for ARM64-based Systems
  • Windows Server 2019
  • Windows Server 2019 (Server Core installation)
  • Windows Server 2022
  • Windows Server 2022 (Server Core installation)
  • Windows 11 version 21H2 for x64-based Systems
  • Windows 11 version 21H2 for ARM64-based Systems
  • Windows 10 Version 21H2 for 32-bit Systems
  • Windows 10 Version 21H2 for ARM64-based Systems
  • Windows 10 Version 21H2 for x64-based Systems
  • Windows 11 Version 22H2 for ARM64-based Systems
  • Windows 11 Version 22H2 for x64-based Systems
  • Windows 10 Version 22H2 for x64-based Systems
  • Windows 10 Version 22H2 for ARM64-based Systems
  • Windows 10 Version 22H2 for 32-bit Systems
  • Windows 10 for 32-bit Systems
  • Windows 10 for x64-based Systems
  • Windows 10 Version 1607 for 32-bit Systems
  • Windows 10 Version 1607 for x64-based Systems
  • Windows Server 2016
  • Windows Server 2016 (Server Core installation)

ESU

  • Windows Server 2008 for 32-bit Systems Service Pack 2
  • Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
  • Windows Server 2008 for x64-based Systems Service Pack 2
  • Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
  • Windows Server 2008 R2 for x64-based Systems Service Pack 1
  • Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
  • Windows Server 2012
  • Windows Server 2012 (Server Core installation)
  • Windows Server 2012 R2
  • Windows Server 2012 R2 (Server Core installation)

Security Updates (14)

Acknowledgments

Vlad Stolyarov and Maddie Stone of Googles Threat Analysis Group (TAG)

Revision History

  • 2023-07-11: Information published.