CVE-2017-9644
Description
An Unquoted Search Path or Element issue was discovered in Automated Logic Corporation (ALC) ALC WebCTRL, i-Vu, SiteScan Web 6.5 and prior; ALC WebCTRL, SiteScan Web 6.1 and prior; ALC WebCTRL, i-Vu 6.0 and prior; ALC WebCTRL, i-Vu, SiteScan Web 5.5 and prior; and ALC WebCTRL, i-Vu, SiteScan Web 5.2 and prior. An unquoted search path vulnerability may allow a non-privileged local attacker to change files in the installation directory and execute arbitrary code with elevated privileges.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
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Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
Automated Logic WebCTRL 6.5 - Local Privilege Escalation
Automated Logic WebCTRL 6.5 Insecure File Permissions Privilege Escalation
Vendor: Automated Logic Corporation
Product web page: http://www.automatedlogic.com
Affected version: ALC WebCTRL, i-Vu, SiteScan Web 6.5 and prior
ALC WebCTRL, SiteScan Web 6.1 and prior
ALC WebCTRL, i-Vu 6.0 and prior
ALC WebCTRL, i-Vu, SiteScan Web 5.5 and prior
ALC WebCTRL, i-Vu, SiteScan Web 5.2 and prior
Summary: WebCTRL®, Automated Logic's web-based building automation
system, is known for its intuitive user interface and powerful integration
capabilities. It allows building operators to optimize and manage
all of their building systems - including HVAC, lighting, fire, elevators,
and security - all within a single HVAC controls platform. It's everything
they need to keep occupants comfortable, manage energy conservation measures,
identify key operational problems, and validate the results.
Desc: WebCTRL server/service suffers from an elevation of privileges vulnerability
which can be used by a simple authenticated user that can change the executable
file with a binary of choice. The vulnerability exist due to the improper permissions,
with the 'M' flag (Modify) or 'C' flag (Change) for 'Authenticated Users' group.
The application suffers from an unquoted search path issue as well impacting the service
'WebCTRL Service' for Windows deployed as part of WebCTRL server solution. This could
potentially allow an authorized but non-privileged local user to execute arbitrary
code with elevated privileges on the system. A successful attempt would require the
local user to be able to insert their code in the system root path undetected by the
OS or other security applications where it could potentially be executed during
application startup or reboot. If successful, the local user’s code would execute
with the elevated privileges of the application.
Tested on: Microsoft Windows 7 Professional SP1 (EN)
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience
Advisory ID: ZSL-2017-5429
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5429.php
CVE ID: CVE-2017-9644
CVE URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9644
30.01.2017
---
sc qc "WebCTRL Service"
[SC] QueryServiceConfig SUCCESS
SERVICE_NAME: Webctrl Service
TYPE : 20 WIN32_SHARE_PROCESS
START_TYPE : 2 AUTO_START
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : C:\WebCTRL6.0\WebCTRL Service.exe -run
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : WebCTRL Service 6.0
DEPENDENCIES :
SERVICE_START_NAME : LocalSystem
cacls "C:\WebCTRL6.0\WebCTRL Service.exe"
C:\WebCTRL6.0\WebCTRL Service.exe
BUILTIN\Administrators:(ID)F
NT AUTHORITY\SYSTEM:(ID)F
BUILTIN\Users:(ID)R
NT AUTHORITY\Authenticated Users:(ID)C
cacls "C:\WebCTRL6.0\WebCTRL Server.exe"
C:\WebCTRL6.0\WebCTRL Server.exe
BUILTIN\Administrators:(ID)F
NT AUTHORITY\SYSTEM:(ID)F
BUILTIN\Users:(ID)R
NT AUTHORITY\Authenticated Users:(ID)C
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| automatedlogic | i-vu | {"endIncluding":"5.2"} | |
| automatedlogic | sitescan_web | {"endIncluding":"5.2"} | |
| carrier | automatedlogic_webctrl | {"endIncluding":"5.2"} | |
References
CWEs
CWE-428
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.