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Gentoo Linux Security Advisory                           GLSA 202210-19
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                                           https://security.gentoo.org/
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 Severity: Low
    Title: Apptainer: Lack of Digital Signature Hash Verification
     Date: October 31, 2022
     Bugs: #875869
       ID: 202210-19

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Synopsis
=======
A vulnerability has been found in Apptainer which could result in the
usage of an unexpected of a container.

Background
=========
Apptainer is the container system for secure high-performance computing.

Affected packages
================
    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  app-containers/apptainer   < 1.1.2                      >= 1.1.2

Description
==========
The Go module "sif" version 2.8.0 and older, which is a statically
linked dependency of Apptainer, does not verify that the hash
algorithm(s) used are cryptographically secure when verifying digital
signatures.

Impact
=====
An image whose verification relies on a cryptographically insecure hash
algorithm could be replaced, resulting in users using an image other
than the one that was expected.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All Apptainer users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-containers/apptainer-1.1.2"

References
=========
[ 1 ] CVE-2022-39237
      https://nvd.nist.gov/vuln/detail/CVE-2022-39237

Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202210-19

Concerns?
========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
======
Copyright 2022 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5/