Vulnerability CVE-2019-1089


Published: 2019-07-15

Description:
An elevation of privilege vulnerability exists in rpcss.dll when the RPC service Activation Kernel improperly handles an RPC request. To exploit this vulnerability, a low level authenticated attacker could run a specially crafted application. The security update addresses this vulnerability by correcting how rpcss.dll handles these requests., aka 'Windows RPCSS Elevation of Privilege Vulnerability'.

Type:

CWE-264

(Permissions, Privileges, and Access Controls)

Vendor: Microsoft
Product: Windows server 2008 
Version: r2;
Product: Windows server 2012 
Version: r2;
Product: Windows server 2016 
Version: 1903; 1803;
Product: Windows 10 
Version:
1903
1809
1803
1709
1703
1607
Product: Windows server 2019 
Product: Windows 7 
Product: Windows rt 8.1 
Product: Windows 8.1 

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.2/10
10/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete

 References:
http://packetstormsecurity.com/files/153683/Microsoft-Windows-RPCSS-Activation-Kernel-Security-Callback-Privilege-Escalation.html
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1089

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