Vulnerability Details : CVE-2019-1161
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.
Vulnerability category: Gain privilege
Products affected by CVE-2019-1161
- cpe:2.3:a:microsoft:windows_defender:-:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:security_essentials:-:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:forefront_endpoint_protection_2010:-:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:system_center_endpoint_protection:*:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:system_center_endpoint_protection:2012:-:*:*:*:*:*:*
- cpe:2.3:a:microsoft:system_center_endpoint_protection:2012:r2:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-1161
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 7 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-1161
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.6
|
MEDIUM | AV:L/AC:L/Au:N/C:N/I:C/A:C |
3.9
|
9.2
|
NIST | |
|
7.1
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |
1.8
|
5.2
|
NIST |
References for CVE-2019-1161
-
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1161
CVE-2019-1161 | Microsoft Defender Elevation of Privilege VulnerabilityPatch;Vendor Advisory
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