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. Two possible workarounds exist: Users can only interact with the default remote endpoint, or an installation can have an execution control list configured to restrict execution to containers signed with specific secure keys.
History

No history.

cve-icon MITRE Information

Status: PUBLISHED

Assigner: GitHub_M

Published: 2021-05-28T20:20:12

Updated: 2021-07-22T06:06:44

Reserved: 2021-05-12T00:00:00


Link: CVE-2021-32635

JSON object: View

cve-icon NVD Information

Status : Analyzed

Published: 2021-05-28T21:15:09.020

Modified: 2022-04-22T16:19:11.770


Link: CVE-2021-32635

JSON object: View

cve-icon Redhat Information

No data.