cvedb.io
CVE-2021-32635
MEDIUM · CVSS 6.3
EPSS exploitation probability: 0%
Published 2021-05-28T21:15:09.020 · Last modified 2026-06-17T03:53:19.233

Summary

Singularity is an open source container platform. In verions 3.7.2 and 3.7.3, Dde to incorrect use of a default URL, `singularity` action commands (`run`/`shell`/`exec`) specifying a container using a `library://` URI will always attempt to retrieve the container from the default remote endpoint (`cloud.sylabs.io`) rather than the configured remote endpoint. An attacker may be able to push a malicious container to the default remote endpoint with a URI that is identical to the URI used by a victim with a non-default remote endpoint, thus executing the malicious container. Only action commands (`run`/`shell`/`exec`) against `library://` URIs are affected. Other commands such as `pull` / `push` respect the configured remote endpoint. The vulnerability is patched in Singularity version 3.7.4.

Affected products

sylabs — singularity

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.