WinCvs 2.1.1.1 Build 1 Privilege Escalation
Posted on 25 October 2016
[+] 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:Usershyp3rlinx>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)cvsntcvsservice.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
