Use of Insufficiently Random Values

Summary

The "JUJU_CONTEXT_ID" is a predictable authentication secret. On a Juju machine (non-Kubernetes) or Juju charm container (on Kubernetes), an unprivileged user in the same network namespace can connect to an abstract domain socket and guess the "JUJU_CONTEXT_ID" value. This gives the unprivileged user access to the same information and tools as the Juju Charm. The package juju through 2.9.50, 3.1-beta1 through 3.1.9, 3.2-beta1 through 3.2.4, 3.3-beta2 through 3.3.6, 3.4-beta1 through 3.4.5, 3.5-beta1 through 3.5.3 and 3.6-beta1 through v4.0-beta4.