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.
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
|IBM WebSphere Application Server Liberty
|188.8.131.52 - 184.108.40.206
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 220.127.116.11 - 18.104.22.168 using the openid-2.0 feature(s):
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH48810
· Apply Liberty Fix Pack 22.214.171.124 or later (targeted availability 4Q2022).
Additional interim fixes may be available and linked off the interim fix download page.
Workarounds and Mitigations
Get Notified about Future Security Bulletins
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.
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.
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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28 September 2022