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.
Advisories
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2021-1270 | 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. |
Github GHSA |
GHSA-5mv9-q7fq-9394 | Action Commands (run/shell/exec) Against Library URIs Ignore Configured Remote Endpoint |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
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Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2024-08-03T23:25:31.038Z
Reserved: 2021-05-12T00:00:00
Link: CVE-2021-32635
No data.
Status : Modified
Published: 2021-05-28T21:15:09.020
Modified: 2024-11-21T06:07:25.580
Link: CVE-2021-32635
No data.
OpenCVE Enrichment
No data.
Weaknesses
EUVD
Github GHSA