CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
COMPLETE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:C/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS
Percentile
34.3%
Vulnerable product
NCR S1
Link:
<https://www.ncr.com/>
Severity level
Severity level: High
Impact: Remote code execution, firmware downgrade
Access Vector: Remote
CVSS v3:
Base Score: 7.5
Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)
CVE: CVE-2017-17668
Vulnerability description
The specialists of the Positive Research center have detected an Arbitrary Code Execution vulnerability in NCR S1.
Vulnerability in the NCR S1 Dispenser controller, related to insufficient protection of the memory write mechanism, allows unauthenticated, remote attackers to execute arbitrary code or downgrade the firmware of the device, including to older versions with known vulnerabilities.
How to fix
Use vendorβs advisory:
<https://www.ncr.com/content/dam/ncrcom/content-type/case_studies/ncr_security_alert_-_2018-04_v3.pdf>
Advisory status
23.06.2017 - Vendor gets vulnerability details
06.02.2018 - Vendor releases fixed version and details
14.12.2018 - Public disclosure
Credits
The vulnerability was detected by Vladimir Kononovich, Alexey Stennikov, Positive Research Center (Positive Technologies Company)
References
<http://en.securitylab.ru/lab/PT-2018-32>
https://www.ptsecurity.com/
<https://en.securitylab.ru/lab/>
About Positive Technologies
Positive Technologies is a leading digital security firm with over 15 years of experience in 360Β° protection of critical IT systems against the most advanced cyberthreats. State-of-the-art solutions are developed at the companyβs research centerβone of the largest in Europe. Positive Technologies experts have helped to identify and fix over 250 zero-day vulnerabilities in products from Cisco, Google, Honeywell, Huawei, Microsoft, Oracle, SAP, Schneider Electric, Siemens, and others, earning a reputation for world-class expertise in protection of devices and infrastructures at all scales from ATMs to nuclear power stations. Findings by Positive Technologies researchers are used for updating the MaxPatrol knowledge base and for development of security solutions including PT Application Firewall, PT Application Inspector, MaxPatrol. These products allow securing web applications, evaluating network protection, blocking attacks in real time, ensuring compliance with industry and national standards, and training security specialists. Positive Technologies is the organizer of the annual Positive Hack Days international forum and security competition.
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
COMPLETE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:C/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS
Percentile
34.3%