Security Bulletin: Netty Vulnerability Affects IBM Watson Machine Learning on CP4D (CVE-2021-21295)

Summary

Netty is vulnerable to HTTP request smuggling, caused by improper validation of Content-Length header by the Http2MultiplexHandler on IBM Watson Machine Learning on CP4D

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

Remediation/Fixes

Fix is available on IBM Watson Machine Learning on CP4D 4.0
See : <https://www.ibm.com/support/producthub/icpdata/docs/content/SSQNUZ_latest/cpd/overview/whats-new.html#whats-new&gt;

Workarounds and Mitigations

None