CVE-2024-50590

Local Privilege Escalation via Weak Service Binary Permissions

State
Published
Severity
7.8 High
Published
Nov 8, 2024
Updated
Nov 3, 2025
Reserved
Oct 25, 2024

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Description

Attackers with local access to the medical office computer can escalate their Windows user privileges to "NT AUTHORITY\SYSTEM" by overwriting one of two Elefant service binaries with weak permissions. The default installation directory of Elefant is "C:\Elefant1" which is writable for all users. In addition, the Elefant installer registers two Firebird database services which are running as “NT AUTHORITY\SYSTEM”.

Path: C:\Elefant1\Firebird_2\bin\fbserver.exe

Path: C:\Elefant1\Firebird_2\bin\fbguard.exe

Both service binaries are user writable. This means that a local attacker can rename one of the service binaries, replace the service executable with a new executable, and then restart the system. Once the system has rebooted, the new service binary is executed as "NT AUTHORITY\SYSTEM".

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCISA-ADP

Weaknesses

  • CWE-276 Incorrect Default Permissions
  • CWE-732 Incorrect Permission Assignment for Critical Resource
  • CWE-250 Execution with Unnecessary Privileges

Affected Products

ProductVersions
ElefantHASOMED
  • <24.04.00Affected

References

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