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Security Bulletin: IBM WebSphere Application Server Liberty is vulnerable to a Denial of Service due to Neko HTML (CVE-2022-24839)

Security Bulletin


Summary

There is a vulnerability in the Neko HTML library used by IBM WebSphere Application Server Liberty with the openid-2.0 feature enabled. This has been addressed.

Vulnerability Details

CVEID:   CVE-2022-24839
DESCRIPTION:   Sparkle Motion Nokogiri is vulnerable to a denial of service, caused by a java.lang.OutOfMemoryError exception when parsing ill-formed HTML markup in the fork of org.cyberneko.html. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/224089 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

Affected Product(s)Version(s)
IBM WebSphere Application Server Liberty17.0.0.3 - 22.0.0.10

Remediation/Fixes

 IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the APAR PH48810. To determine if a feature is enabled for IBM WebSphere Application Server Liberty, refer to How to determine if Liberty is using a specific feature. 

For IBM WebSphere Application Server Liberty 17.0.0.3 - 22.0.0.10 using the openid-2.0 feature(s): 
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH48810
--OR--
· Apply Liberty Fix Pack 22.0.0.11 or later (targeted availability 4Q2022).

Additional interim fixes may be available and linked off the interim fix download page.

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

Off

To determine if a feature is enabled for IBM WebSphere Application Server Liberty, refer to How to determine if Liberty is using a specific feature. 

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

28 Sep 2022: Initial Publication

*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.

Document Location

Worldwide

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Document Information

Modified date:
28 September 2022

UID

ibm16824871

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