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CVE-2018-16156

HIGHCVSS 7.8/10EPSS 2.56%

Last modified

CVE-2018-16156 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In PaperStream IP (TWAIN) 1.42.0.5685 (Service Update 7), the FJTWSVIC service running with SYSTEM privilege processes unauthenticated messages received over the FjtwMkic_Fjicube_32 named pipe. One of these message processing functions attempts to dynamically load the UninOldIS.dll library and executes an exported function named ChangeUninstallString. EPSS estimates a 2.56% chance of exploitation in the next 30 days.

Description

In PaperStream IP (TWAIN) 1.42.0.5685 (Service Update 7), the FJTWSVIC service running with SYSTEM privilege processes unauthenticated messages received over the FjtwMkic_Fjicube_32 named pipe. One of these message processing functions attempts to dynamically load the UninOldIS.dll library and executes an exported function named ChangeUninstallString. The default install does not contain this library and therefore if any DLL with that name exists in any directory listed in the PATH variable, it can be used to escalate to SYSTEM level privilege.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
2.56%

83.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
FujitsuPaperstream Ip \(Twain\)1.42.0.5685

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-16156?
In PaperStream IP (TWAIN) 1.42.0.5685 (Service Update 7), the FJTWSVIC service running with SYSTEM privilege processes unauthenticated messages received over the FjtwMkic_Fjicube_32 named pipe. One of these message processing functions attempts to dynamically load the UninOldIS.dll library and executes an exported function named ChangeUninstallString. The default install does not contain this library and therefore if any DLL with that name exists in any directory listed in the PATH variable, it can be used to escalate to SYSTEM level privilege.
How severe is CVE-2018-16156?
CVE-2018-16156 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 2.56% probability of exploitation in the next 30 days.
How do I fix CVE-2018-16156?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-16156?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST