2.1 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
5.3 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
5.1%
CVSS v3 4.0
**ATTENTION:**Low skill level to exploit
**Vendor:**Siemens
**Equipment:**SIMATIC STEP 7 (TIA Portal)
**Vulnerability:**Unprotected Storage of Credentials
Successful exploitation of this vulnerability could allow an attacker to reconstruct passwords.
Siemens reports the following SIMATIC STEP 7 product is affected:
3.2.1 UNPROTECTED STORAGE OF CREDENTIALS CWE-256
Password hashes with insufficient computational effort could allow an attacker to access to a project file and reconstruct passwords. This vulnerability could allow the attacker to obtain certain passwords from the project.
CVE-2018-13811 has been assigned to this vulnerability. A CVSS v3 base score of 4.0 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).
Siemens reported this vulnerability to NCCIC.
Siemens recommends users update to Version 15.1, which can be located here:
<https://support.industry.siemens.com/cs/us/en/view/109758794>
Siemens has identified the following specific workarounds and mitigations users can apply to reduce the risk:
As a general security measure, Siemens strongly recommends protecting network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemensβ operational guidelines for industrial security (<https://www.siemens.com/cert/operational-guidelines-industrial-security>), and following the recommendations in the product manuals.
Additional information on industrial security by Siemens can be found at:
<https://www.siemens.com/industrialsecurity>
For more information on this vulnerability and associated software updates, please see Siemens security advisory SSA-621493 on their website:
<https://www.siemens.com/cert/advisories>
NCCIC reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
NCCIC 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 on the ICS-CERT website in the Technical Information Paper, ICS-TIP-12-146-01BβTargeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to NCCIC for tracking and correlation against other incidents.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-13811
cwe.mitre.org/data/definitions/256.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
support.industry.siemens.com/cs/us/en/view/109758794
twitter.com/CISAgov
twitter.com/intent/tweet?text=Siemens%20SIMATIC%20STEP%207%20%28TIA%20Portal%29+https://www.cisa.gov/news-events/ics-advisories/icsa-18-317-06
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-18-317-06&title=Siemens%20SIMATIC%20STEP%207%20%28TIA%20Portal%29
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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-18-317-06
www.oig.dhs.gov/
www.siemens.com/cert/advisories
www.siemens.com/cert/operational-guidelines-industrial-security
www.siemens.com/industrialsecurity
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-advisories/icsa-18-317-06
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=Siemens%20SIMATIC%20STEP%207%20%28TIA%20Portal%29&body=www.cisa.gov/news-events/ics-advisories/icsa-18-317-06
2.1 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
5.3 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
5.1%