Issue Type:

• Bug report
• Feature request

What happened:
There is a security vulnerability CVE-2020-11612 which concerns Netty 4.1.x before 4.1.46, and thus might affect Linkerd too (as of today the Netty version used seems to be 4.1.31 in master).

What you expected to happen:
It could be investigated if this causes a security vulnerability in Linkerd too. If so (and feasible), could update the Netty dependency to a version without the vulnerability.

Environment:

• linkerd version: 1.7.1, but I believe this manifests with all versions using Netty 4.1.x