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AUSCERT External Security Bulletin Redistribution
ESB-2017.1275
Advisory (ICSA-17-138-01) Miele Professional PG 85 Series
19 May 2017
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AusCERT Security Bulletin Summary
---------------------------------
Product: Miele Professional PG 85 Series
Publisher: ICS-CERT
Operating System: Network Appliance
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Modify Arbitrary Files -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2017-7240
Original Bulletin:
https://ics-cert.us-cert.gov/advisories/ICSA-17-138-01
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Advisory (ICSA-17-138-01)
Miele Professional PG 85 Series
Original release date: May 18, 2017
Legal Notice
All information products included in http://ics-cert.us-cert.gov are provided
"as is" for informational purposes only. The Department of Homeland Security
(DHS) does not provide any warranties of any kind regarding any information
contained within. DHS does not endorse any commercial product or service,
referenced in this product or otherwise. Further dissemination of this product
is governed by the Traffic Light Protocol (TLP) marking in the header. For
more information about TLP, see http://www.us-cert.gov/tlp/.
CVSS v3 7.3
ATTENTION: Remotely exploitable/low skill level to exploit. Public exploits
are available.
Vendor: Miele Professional
Equipment: PG 85 Series
Vulnerability: Path Traversal
UPDATED INFORMATION
This advisory is a follow-up to the original alert titled ICS-ALERT-17-089-01
Miele Professional PG 8528 Vulnerability that was published March 30, 2017, on
the NCCIC/ICS-CERT web site.
AFFECTED PRODUCTS
Miele Professional reports that the following versions of the PG 85 product
series, a large capacity cleaner and disinfector, and their embedded
webservers are affected:
PG8527, version 2.02, 2.51, 2.52, and 2.54
PG8528, version 2.02, 2.51, 2.52, and 2.54
PG8535, version 1.00 and 1.04
PG8536, version 1.10 and 1.14
IMPACT
Successful exploitation of this vulnerability could allow a remote attacker to
read or modify sensitive data or files, execute unauthorized code or commands,
and possibly cause a system crash.
MITIGATION
Miele Professional issued patches for this vulnerability on May 4, 2017. Miele
Professional is in the process of contacting all affected users via registered
mail.
Users of affected machines can contact Miele Professional at 1-800-991-9380 to
schedule service for a software update, which must be performed by a Miele
Professional technician.
The following updates are available for affected Miele Professional PG 85
series products:
PG8527, version 2.02
Update to version 2.12
PG8527, version 2.51
Update to version 2.61
PG8527, version 2.52
Update to version 2.62
PG8527, version 2.54
Update to version 2.64
PG8528, version 2.02
Update to version 2.12
PG8528, version 2.51
Update to version 2.61
PG8528, version 2.52
Update to version 2.62
PG8528, version 2.54
Update to version 2.64
PG8535, version 1.00
Update to version 1.10
PG8535, version 1.04
Update to version 1.14
PG8536, version 1.10
Update to version 1.20
PG8536, version 1.14
Update to version 1.24
Miele Professional issued a press release addressing this vulnerability on
March 29, 2017, which can be found here:
https://www.miele.de/en/m/miele-admits-communication-glitch-4072.htm (link is
external)
NCCIC/ICS-CERT recommends that users take defensive measures to minimize the
risk of exploitation of this vulnerability. Specifically, users should:
- -Minimize network exposure for all control system devices and/or systems,
and ensure that they are not accessible from the Internet.
- -Locate control system networks and remote devices behind firewalls, and
isolate them from the business network.
- -When remote access is required, use secure methods, such as Virtual
Private Networks (VPNs), recognizing that VPNs may have vulnerabilities and
should be updated to the most current version available. Also recognize that
VPN is only as secure as the connected devices.
ICS-CERT reminds organizations to perform proper impact analysis and risk
assessment prior to deploying defensive measures.
ICS-CERT also provides a section for control systems security recommended
practices on the ICS-CERT web page. Several recommended practices are
available for reading and download, including Improving Industrial Control
Systems Cybersecurity with Defense-in-Depth Strategies.
Additional mitigation guidance and recommended practices are publicly
available in the ICSCERT Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies, that is available for download from the ICS-CERT web site.
Organizations observing any suspected malicious activity should follow their
established internal procedures and report their findings to ICS-CERT for
tracking and correlation against other incidents.
VULNERABILITY OVERVIEW
PATH TRAVERSAL CWE-22
The path traversal vulnerability has been identified, which may allow a remote
attacker to access sensitive information by using special elements in the
pathname to resolve to a location outside of a restricted directory.
CVE-2017-7240 has been assigned to this vulnerability. A CVSS v3 base score of
7.3 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).
RESEARCHER
Jens Regel of Schneider & Wulf publicly disclosed this vulnerability without
ICS-CERT coordination.
BACKGROUND
Critical Infrastructure Sector: Healthcare and Public Health
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Germany
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===========================================================================
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The University of Queensland
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