CVE-2018-18435

HIGH

kioware_server < 4.9.6 - Unauthenticated Privilege Escalation via Weak Directory Permissions

Title source: llm

Exploitation Summary

EIP tracks 1 public exploit for CVE-2018-18435. PoCs published by Hashim Jawad.

AI-analyzed exploit summary This is a technical writeup detailing a privilege escalation vulnerability in KioWare Server 4.9.6 due to weak folder permissions allowing binary replacement of a service running as LocalSystem. The writeup includes proof via icacls and sc commands, along with a timeline of vendor communication.

Description

KioWare Server version 4.9.6 and older installs by default to "C:\kioware_com" with weak folder permissions granting any user full permission "Everyone: (F)" to the contents of the directory and it's sub-folders. In addition, the program installs a service called "KWSService" which runs as "Localsystem", this will allow any user to escalate privileges to "NT AUTHORITY\SYSTEM" by substituting the service's binary with a malicious one.

Exploits (1)

exploitdb WRITEUP

by Hashim Jawad · textlocalwindows

https://www.exploit-db.com/exploits/46093

View Code ZIP pw:eip

This is a technical writeup detailing a privilege escalation vulnerability in KioWare Server 4.9.6 due to weak folder permissions allowing binary replacement of a service running as LocalSystem. The writeup includes proof via icacls and sc commands, along with a timeline of vendor communication.

Classification

Writeup 100%

Attack Type

Lpe

Complexity

Trivial

Reliability

Reliable

Target: KioWare Server 4.9.6 and older

No auth needed

Prerequisites: Access to the system with the vulnerable KioWare Server installation · Ability to replace the KWSS.exe binary

MITRE ATT&CK