Singularity is the container platform for performance sensitive workloads.
Singularity always uses the default remote endpoint, ‘cloud.syslabs.io’, for action commands using the ‘library://’ URI rather than the configured remote endpoint.
An attacker that that can push a malicious container to the default remote endpoint could execute code on hosts that fetch the container.
There is no known workaround at this time.
All Singularity users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-cluster/singularity-3.7.4"