## Summary
Apache Tomcat is used by IBM UrbanCode Release. This fix includes Apache Tomcat 8.5.79.
## Vulnerability Details
** CVEID: **[CVE-2021-42340]()
** DESCRIPTION: **Apache Tomcat is vulnerable to a denial of service, caused by a memory leak flaw in WebSocket connections. By sending a specially-crafted request using OutOfMemoryError, 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/211354]() 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 UrbanCode Release| 6.2.5.3 – 6.2.5.5
## Remediation/Fixes
IBM strongly recommends addressing the vulnerability now by upgrading to IBM UrbanCode Release version 6.2.5.6 or above.
**Affected Supporting Product(s)**
|
**Remediation/Fix**
—|—
IBM UrbanCode Release 6.2.5.3 – 6.2.5.5
|
[**Download** ]( “Download” )IBM UrbanCode Release 6.2.5.6 Includes Apache Tomcat **8.5.79**
## Workarounds and Mitigations
None
## Get Notified about Future Security Bulletins
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### References
[Complete CVSS v3 Guide]( “Link resides outside of ibm.com” )
[On-line Calculator v3]( “Link resides outside of ibm.com” )
Off
## Related Information
[IBM Secure Engineering Web Portal]()
[IBM Product Security Incident Response Blog]()
## Change History
24 Jan 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
According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an “industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response.” IBM PROVIDES THE CVSS SCORES “”AS IS”” WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. “Affected Products and Versions” referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.
## Document Location
Worldwide
[{“Business Unit”:{“code”:”BU037″,”label”:”HCL Technologies”},”Product”:{“code”:”SSHPRN”,”label”:”Rational”},”Component”:”Urban Code Release”,”Platform”:[{“code”:”PF033″,”label”:”Windows”},{“code”:”PF016″,”label”:”Linux”}],”Version”:”6.2.5.6″,”Edition”:””}]Read More