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Advisories

System Informer before 4.0.26241.138 Incorrect Authorization in phsvc ALPC Port

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severity
high
date
Affecting

  • System Informer >= 0, < 4.0.26241.138

CWE
  • CWE-863 Incorrect Authorization
CVSS
8.5
CVSS V4 Vector
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
Credit
Muhammad Ali
Description
System Informer before 4.0.26241.138 contains an incorrect authorization vulnerability in the phsvc helper that allows local attackers to reach privileged APIs by connecting from any Authenticode-signed process. Attackers can load code into a Microsoft-signed host like rundll32.exe, connect to SiSvcApiPort, and call PhSvcApiCreateService to execute code as SYSTEM.

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