UBUNTU-CVE-2022-23538

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2022-23538
Published: 17 Jan 2023, 21:15
Last modified:20 May 2026, 16:07

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.6 HIGH
3.1 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

17 Jan 2023, 21:15
Published
Vulnerability first disclosed
20 May 2026, 16:07
Last Modified
Vulnerability information updated

Description

github.com/sylabs/scs-library-client is the Go client for the Singularity Container Services (SCS) Container Library Service. When the scs-library-client is used to pull a container image, with authentication, the HTTP Authorization header sent by the client to the library service may be incorrectly leaked to an S3 backing storage provider. This occurs in a specific flow, where the library service redirects the client to a backing S3 storage server, to perform a multi-part concurrent download. Depending on site configuration, the S3 service may be provided by a third party. An attacker with access to the S3 service may be able to extract user credentials, allowing them to impersonate the user. The vulnerable multi-part concurrent download flow, with redirect to S3, is only used when communicating with a Singularity Enterprise 1.x installation, or third party server implementing this flow. Interaction with Singularity Enterprise 2.x, and Singularity Container Services (cloud.sylabs.io), does not trigger the vulnerable flow. We encourage all users to update. Users who interact with a Singularity Enterprise 1.x installation, using a 3rd party S3 storage service, are advised to revoke and recreate their authentication tokens within Singularity Enterprise. There is no workaround available at this time.

CVSS Metrics

  • v3.1•HIGH•Score: 7.6CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

Affected Systems

  • ubuntu•singularity-container

    all | all | all

References (6)