CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
78.0%
**ATTENTION:**Remotely exploitable/low skill level to exploit.
Vendor: Siemens
Equipment: Viewport for Web Office Portal
Vulnerability: Improper Authentication
Siemens reports that the vulnerability affects the following ViewPort for Web Office Portal products:
Successful exploitation of this vulnerability could allow a remote attacker to upload and execute arbitrary code.
Siemens has released software revision number 1453 for ViewPort for Web Office Portal to address the vulnerability. It is recommended that users update to the fixed version. This new version can be obtained by emailing Siemens Energy Customer Support Center at: [email protected]
Siemens recommends the following mitigations until patches can be applied:
<https://www.siemens.com/gridsecurity>
For more information on this vulnerability and more detailed mitigation instructions, please see Siemens Security Advisory SSA-545214 at the following location:
<http://www.siemens.com/cert/advisories>
NCCIC/ICS-CERT recommends that users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should:
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 ICSβCERT Technical Information Paper, ICS-TIP-12-146-01BβTargeted 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.
No known public exploits specifically target this vulnerability.
An unauthenticated remote attacker may be able to use specially crafted network packets to upload arbitrary code to Port 443/TCP or Port 80/TCP and execute with the permissions of the operating system user.
CVE-2017-6869 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
Hannes Trunde from Kapsch BusinessCom AG reported this vulnerability to Siemens.
**Critical Infrastructure Sector(s):**Energy
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Germany
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-6869
www.siemens.com/cert/advisories
cisasurvey.gov1.qualtrics.com/jfe/form/SV_9n4TtB8uttUPaM6?product=https://www.cisa.gov/news-events/ics-advisories/icsa-17-180-03
cwe.mitre.org/data/definitions/287.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
twitter.com/intent/tweet?text=Siemens%20Viewport%20for%20Web%20Office%20Portal+https://www.cisa.gov/news-events/ics-advisories/icsa-17-180-03
www.dhs.gov
www.dhs.gov/foia
www.dhs.gov/performance-financial-reports
www.facebook.com/CISA
www.facebook.com/sharer/sharer.php?u=https://www.cisa.gov/news-events/ics-advisories/icsa-17-180-03&title=Siemens%20Viewport%20for%20Web%20Office%20Portal
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
www.instagram.com/cisagov
www.linkedin.com/company/cybersecurity-and-infrastructure-security-agency
www.linkedin.com/sharing/share-offsite/?url=https://www.cisa.gov/news-events/ics-advisories/icsa-17-180-03
www.oig.dhs.gov/
www.siemens.com/gridsecurity
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=Siemens%20Viewport%20for%20Web%20Office%20Portal&body=www.cisa.gov/news-events/ics-advisories/icsa-17-180-03
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
78.0%