## Summary

IBM UrbanCode Build is affected by CVE-2021-42340

## 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 Build| 6.1.4.0 – 6.1.7.3

## Remediation/Fixes

IBM strongly recommends addressing the vulnerability now by upgrading to IBM UrbanCode Build version 6.1.7.4 or above.

**Affected Supporting Product(s)**| **Remediation/Fix**
—|—
IBM UrbanCode Build 6.1.4.0 – 6.1.7.3| [Download]( “Download” ) IBM UrbanCode Build 6.1.7.4 – Includes Apache Tomcat 8.5.75

## 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” )

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## Related Information

[IBM Secure Engineering Web Portal]()
[IBM Product Security Incident Response Blog]()

## Change History

27 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.

## Document Location

Worldwide

[{“Business Unit”:{“code”:”BU037″,”label”:”HCL Technologies”},”Product”:{“code”:”SSHPRN”,”label”:”Rational”},”Component”:””,”Platform”:[{“code”:”PF033″,”label”:”Windows”},{“code”:”PF016″,”label”:”Linux”}],”Version”:”6.1.7.4″,”Edition”:””}]Read More