WinCvs 2.1.1.1 Build 1 Privilege Escalation

2016-10-25T00:00:00
ID PACKETSTORM:139328
Type packetstorm
Reporter hyp3rlinx
Modified 2016-10-25T00:00:00

Description

                                        
                                            `[+] Credits: John Page aka hyp3rlinx  
  
[+] Website: hyp3rlinx.altervista.org  
  
[+] Source:  
http://hyp3rlinx.altervista.org/advisories/WINCVS-PRIVILEGE-ESCALATION.txt  
  
[+] ISR: ApparitionSec  
  
  
  
Vendor:  
======================  
cvsgui.sourceforge.net  
www.wincvs.org  
  
  
Product:  
===========  
WinCvs v2.1.1.1 (Build 1)  
downloads as wincvs-2.0.2.4  
v2.0.2.4  
  
  
WinCVS is a free app for Windows that will help you simplify the  
development of files for groups of people working on  
the same software project.  
  
  
Vulnerability Type:  
=====================  
Privilege Escalation  
  
  
  
CVE Reference:  
==============  
N/A  
  
  
  
Vulnerability Details:  
=====================  
  
WinCvs.exe installs a service with an unquoted service path running with  
SYSTEM privileges, to exploit a local attacker must place  
a malicious executable file named "Program.exe" in the path of the service.  
After service restart or system reboot, it could  
potentially allow an authorized local user to execute arbitrary code with  
elevated privileges on the system.  
  
  
  
Proof:  
======  
  
C:\Users\hyp3rlinx>sc qc CVS  
[SC] QueryServiceConfig SUCCESS  
  
SERVICE_NAME: CVS  
TYPE : 110 WIN32_OWN_PROCESS (interactive)  
START_TYPE : 2 AUTO_START  
ERROR_CONTROL : 1 NORMAL  
BINARY_PATH_NAME : C:\Program Files (x86)\cvsnt\cvsservice.exe  
LOAD_ORDER_GROUP :  
TAG : 0  
DISPLAY_NAME : CVSNT  
DEPENDENCIES :  
SERVICE_START_NAME : LocalSystem  
  
  
  
Exploitation Technique:  
=======================  
Local  
  
  
  
Severity Level:  
================  
Medium  
  
  
  
  
[+] Disclaimer  
The information contained within this advisory is supplied "as-is" with no  
warranties or guarantees of fitness of use or otherwise.  
Permission is hereby granted for the redistribution of this advisory,  
provided that it is not altered except by reformatting it, and  
that due credit is given. Permission is explicitly given for insertion in  
vulnerability databases and similar, provided that due credit  
is given to the author. The author is not responsible for any misuse of the  
information contained herein and accepts no responsibility  
for any damage caused by the use or misuse of this information. The author  
prohibits any malicious use of security related information  
or exploits by the author or elsewhere.  
  
hyp3rlinx  
`