Document Title: =============== WinSaber - Unquoted Service Path Privilege Escalation References (Source): ==================== http://www.vulnerability-lab.com/get_content.php?id=1879 Release Date: ============= 2016-07-29 Vulnerability Laboratory ID (VL-ID): ==================================== 1879 Common Vulnerability Scoring System: ==================================== 4.2 Product & Service Introduction: =============================== WinSaber.exe is an executable files developed by Innovative Knowledge for the Windows Operating System. This virus can infect, replace, or corrupt existing EXE files, which can then lead to error messages. Such file and its related exe files gets into the computer system hiding behind the programs which user downloads. (Copy of the Homepage: http://www.mypccaresolutions.com/2016/07/14/get-rid-of-ads-bywinsaber-exe-virus/) Abstract Advisory Information: ============================== An independent vulnerability laboratory researcher discovered an unqouted service path privilege escalation issue in the WinSaber Trojan software. Vulnerability Disclosure Timeline: ================================== 2016-07-26: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== Exploitation Technique: ======================= Local Severity Level: =============== Medium Technical Details & Description: ================================ The application suffers from an unquoted search path issue impacting the trojan 'winSaber'. This could potentially allow an authorized but non-privileged local user to execute arbitrary code with system privileges on the system. Proof of Concept (PoC): ======================= The issue can be exploited by local attackers with restricted system user account or network access and without user interaction. For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue. --- Privileges Logs --- C:Program FilesWinSaber>sc qc WinSaber [SC] QueryServiceConfig rA(c)ussite(s) SERVICE_NAME: WinSaber TYPE : 10 WIN32_OWN_PROCESS START_TYPE : 2 AUTO_START ERROR_CONTROL : 1 NORMAL BINARY_PATH_NAME : C:Program FilesWinSaberWinSaber.exe LOAD_ORDER_GROUP : TAG : 0 DISPLAY_NAME : winsaber DEPENDENCIES : SERVICE_START_NAME : LocalSystem Security Risk: ============== The security risk of the an unqouted service path privilege escalation in the malware software is estimated as medium. (CVSS 4.2) Credits & Authors: ================== ZwX - [http://www.vulnerability-lab.com/show.php?user=ZwX] Disclaimer & Information: ========================= The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. We do not approve or encourage anybody to break any licenses, policies, deface websites, hack into databases or trade with stolen data. Domains: www.vulnerability-lab.com - www.vuln-lab.com - www.evolution-sec.com Contact: admin@vulnerability-lab.com - research@vulnerability-lab.com - admin@evolution-sec.com Section: magazine.vulnerability-lab.com - vulnerability-lab.com/contact.php - evolution-sec.com/contact Social: twitter.com/vuln_lab - facebook.com/VulnerabilityLab - youtube.com/user/vulnerability0lab Feeds: vulnerability-lab.com/rss/rss.php - vulnerability-lab.com/rss/rss_upcoming.php - vulnerability-lab.com/rss/rss_news.php Programs: vulnerability-lab.com/submit.php - vulnerability-lab.com/list-of-bug-bounty-programs.php - vulnerability-lab.com/register.php Any modified copy or reproduction, including partially usages, of this file requires authorization from Vulnerability Laboratory. Permission to electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of other media, are reserved by Vulnerability-Lab Research Team or its suppliers. All pictures, texts, advisories, source code, videos and other information on this website is trademark of vulnerability-lab team & the specific authors or managers. To record, list, modify, use or edit our material contact (admin@ or research@vulnerability-lab.com) to get a ask permission. Copyright A(c) 2016 | Vulnerability Laboratory - [Evolution Security GmbH]aC/ -- VULNERABILITY LABORATORY - RESEARCH TEAM SERVICE: www.vulnerability-lab.com