There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - Sylabs Singularity 3.2.0 through 3.6.2 has Insecure Permissions on temporary directories used in fakeroot
    or user namespace container execution. (CVE-2020-25039)

  - Sylabs Singularity through 3.6.2 has Insecure Permissions on temporary directories used in explicit and
    implicit container build operations, a different vulnerability than CVE-2020-25039. (CVE-2020-25040)

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Sylabs Singularity 3.2.0 through 3.6.2 has Insecure Permissions on temporary directories used in fakeroot
    or user namespace container execution. (CVE-2020-25039)

This update for singularity fixes the following issues :

New version 3.6.3, addresses the following security issues :

  - CVE-2020-25039, boo#1176705

    When a Singularity action command (run, shell, exec) is     run with the fakeroot or user namespace option,     Singularity will extract a container image to a     temporary sandbox directory. Due to insecure permissions     on the temporary directory it is possible for any user     with access to the system to read the contents of the     image. Additionally, if the image contains a     world-writable file or directory, it is possible for a     user to inject arbitrary content into the running     container. 

  - CVE-2020-25040, boo#1176707

    When a Singularity command that results in a container     build operation is executed, it is possible for a user     with access to the system to read the contents of the     image during the build. Additionally, if the image     contains a world-writable file or directory, it is     possible for a user to inject arbitrary content into the     running build, which in certain circumstances may enable     arbitrary code execution during the build and/or when     the built container is run.

New version 3.6.2, new features / functionalities :

-Add --force option to singularity delete for non-interactive workflows.

-Support compilation with FORTIFY_SOURCE=2 and build in pie mode with fstack-protector enabled

  - Changed defaults / behaviours

    -Default to current architecture for singularity delete.

  - Bug Fixes

    -Respect current remote for singularity delete command.

    -Allow rw as a (noop) bind option.

    -Fix capability handling regression in overlay mount.

    -Fix LD_LIBRARY_PATH environment override regression     with --nv/--rocm.

    -Fix environment variable duplication within singularity     engine.

    -Use -user-xattrs for unsquashfs to avoid error with     rootless extraction using unsquashfs 3.4

    -Correct --no-home message for 3.6 CWD behavior.

    -Don't fail if parent of cache dir not accessible.

    -Fix tests for Go 1.15 Ctty handling.

    -Fix additional issues with test images on ARM64.

    -Fix FUSE e2e tests to use container ssh_config.

    -Provide advisory message r.e. need for upper and work     to exist in overlay images.

    -Use squashfs mem and processor limits in squashfs gzip     check.

    -Ensure build destination path is not an empty string -     do not overwrite CWD.

    -Don't unset PATH when interpreting legacy /environment     files.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Sylabs Singularity 3.2.0 through 3.6.2 has Insecure Permissions on temporary directories used in fakeroot     or user namespace container execution. (CVE-2020-25039)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Published	Updated	Severity
400373	Alpine: singularity: security update to 3.6.2-r0 (deprecated)	Tenable Cloud Security	Alpine Linux Local Security Checks	8/16/2023	7/2/2026	high
408118	Alpine: multiple singularity packages: security update to 3.6.3-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	12/7/2023	7/2/2026	high
408118	Alpine: multiple singularity packages: security update to 3.6.3-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	12/7/2023	7/2/2026	high
400373	Alpine: singularity: security update to 3.6.2-r0 (deprecated)	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	8/16/2023	7/2/2026	high
431969	SCA: security update for github.com/sylabs/singularity (GHSA-w6v2-qchm-grj7)	Tenable Cloud Security	SCA Checks	8/7/2025	7/2/2026	high
431969	SCA: security update for github.com/sylabs/singularity (GHSA-w6v2-qchm-grj7)	Tenable Self-Hosted Container Security	SCA Checks	8/7/2025	7/2/2026	high
140727	openSUSE Security Update : singularity (openSUSE-2020-1497)	Nessus	SuSE Local Security Checks	9/22/2020	2/20/2024	high
244549	Linux Distros Unpatched Vulnerability : CVE-2020-25039	Nessus	Misc.	8/7/2025	7/12/2026	high

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