Singularity: Remote code execution

Background

Singularity is the container platform for performance sensitive workloads.

Description

Singularity always uses the default remote endpoint, ‘cloud.syslabs.io’, for action commands using the ‘library://’ URI rather than the configured remote endpoint.

Impact

An attacker that that can push a malicious container to the default remote endpoint could execute code on hosts that fetch the container.

Workaround

There is no known workaround at this time.

Resolution

All Singularity users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=sys-cluster/singularity-3.7.4"