IBM Support

Security Bulletin: Vulnerability in Netty affects IBM Cloud Private (CVE-2021-21295)

Security Bulletin


Summary

There is a vulnerability in the Netty open source library. The library is used by IBM Cloud Private logging. This bulletin identifies the security fixes to apply to address the Netty vulnerability (CVE-2021-21295).

Vulnerability Details

CVEID:   CVE-2021-21295
DESCRIPTION:   Netty is vulnerable to HTTP request smuggling, caused by improper validation of Content-Length header by the Http2MultiplexHandler. By sending specially crafted HTTP request headers, an attacker could exploit this vulnerability to poison a web-cache, perform an XSS attack, or obtain sensitive information from request.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/197999 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)

Affected Products and Versions

Affected Product(s)Version(s)
IBM Cloud Private3.2.1 CD
IBM Cloud Private3.2.2 CD

Remediation/Fixes

IBM strongly recommends addressing the vulnerability now by upgrading.

 

The recommended solution involves the IBM Cloud Private ibm-icplogging component. It is recommended that you follow the instructions for the component in the links listed below:

 

For IBM Cloud Private 3.1.1: IBM Cloud Private 3.1.1 Patch

 

For IBM Cloud Private 3.1.2: IBM Cloud Private 3.1.2 Patch

 

For IBM Cloud Private 3.2.0: IBM Cloud Private 3.2.0 Patch

 

For IBM Cloud Private 3.2.1: IBM Cloud Private 3.2.1 Patch

 

For IBM Cloud Private 3.2.2: IBM Cloud Private 3.2.2 Patch

 

For IBM Cloud Private 3.1.0:

  • Upgrade to the latest Continuous Delivery (CD) update package, IBM Cloud Private 3.2.2. 

  

Workarounds and Mitigations

None

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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

04 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

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:
04 January 2022

Initial Publish date:
04 January 2022

UID

ibm16538154

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