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Security Bulletin: Potential Privilege Escalation Vulnerability in WebSphere Application Server (CVE-2018-1901)

Security Bulletin


Summary

There is a timing window where there could be a privilege escalation vulnerability in WebSphere Application Server.

Vulnerability Details

CVEID: CVE-2018-1901
DESCRIPTION: IBM WebSphere Application Server could allow a remote attacker to temporarily gain elevated privileges on the system, caused by incorrect cached value being used.
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/152530 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L)

Affected Products and Versions

This vulnerability affects the following versions and releases of IBM WebSphere Application Server:

  • Liberty
  • Version 9.0
  • Version 8.5

Remediation/Fixes

The recommended solution is to apply the interim fix, Fix Pack or PTF containing the APAR for each named product as soon as practical.

For WebSphere Application Server Liberty:

· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH02811
--OR--
· Apply Fix Pack 18.0.0.4 or later.

For WebSphere Application Server traditional and WebSphere Application Server Hypervisor Edition:

For V9.0.0.0 through 9.0.0.9:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH02811
--OR--
· Apply Fix Pack 9.0.0.10 or later.

For V8.5.0.0 through 8.5.5.14:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH02811
--OR--
· Apply Fix Pack 8.5.5.15 or later.

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

10 December 2018: original document published

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

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Document Information

Modified date:
06 March 2019

UID

ibm10738727

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