CVE-2019-1161

Microsoft Defender Elevation of Privilege Vulnerability

Description

An elevation of privilege vulnerability exists when the MpSigStub.exe for Defender allows file deletion in arbitrary locations. To exploit the vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted command that could exploit the vulnerability and delete protected files on an affected system once MpSigStub.exe ran again. The update addresses the vulnerability and blocks the arbitrary deletion.

7.1

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.20%

Vendor Advisory microsoft.com

Affected: Microsoft Microsoft Forefront Endpoint Protection 2010

Affected: Microsoft Microsoft System Center Endpoint Protection

Affected: Microsoft Microsoft System Center 2012 R2 Endpoint Protection

Affected: Microsoft Microsoft Security Essentials

Affected: Microsoft Microsoft System Center 2012 Endpoint Protection

Affected: Microsoft Windows Defender

References

Link	Tags
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1161	patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-1161?: CVE-2019-1161 has been scored as a high severity vulnerability.
How to fix CVE-2019-1161?: To fix CVE-2019-1161, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-1161 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2019-1161 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-1161?: CVE-2019-1161 affects Microsoft Microsoft Forefront Endpoint Protection 2010, Microsoft Microsoft System Center Endpoint Protection, Microsoft Microsoft System Center 2012 R2 Endpoint Protection, Microsoft Microsoft Security Essentials, Microsoft Microsoft System Center 2012 Endpoint Protection, Microsoft Windows Defender.

This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.