SB2019071022 - Privilege escalation in Microsoft Windows RPCSS
Published: July 10, 2019
Security Bulletin ID
SB2019071022
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2019-1089)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to elevate privileges on the system.
The vulnerability exists due to insufficient validation of user-supplied input when the RPC service Activation Kernel improperly handles an RPC request in rpcss.dll. A local user can create a specially crafted application, run it on the affected system and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.