Privilege escalation in Windows Error Reporting

Published: 2019-05-14 21:55:51 | Updated: 2019-05-14
Severity Medium
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2019-0863
CVSSv3 7.5 [CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]
CWE ID CWE-20
Exploitation vector Local
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software Windows
Windows Server
Vulnerable software versions Windows 8.1
Windows 7
Windows 10

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Windows Server 2012
Windows Server 2012 R2
Windows Server 2008 R2

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Vendor URL Microsoft

Security Advisory

1) Input validation error

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to the way Windows Error Reporting (WER) handles files. A local user can create a specially crafted WER file and execute arbitrary code on the system in kernel mode.

Note: this vulnerability is being actively exploited in the wild.

Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0863

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