openSUSE Security Update: Security update for singularity
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Announcement ID:    openSUSE-SU-2020:1529-1
Rating:             moderate
References:         #1176705 #1176707 
Cross-References:   CVE-2020-25039 CVE-2020-25040
Affected Products:
                    openSUSE Backports SLE-15-SP2
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   An update that fixes two vulnerabilities is now available.

Description:

   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.

   This update was imported from the openSUSE:Leap:15.2:Update update project.


Patch Instructions:

   To install this openSUSE Security Update use the SUSE recommended installation methods
   like YaST online_update or "zypper patch".

   Alternatively you can run the command listed for your product:

   - openSUSE Backports SLE-15-SP2:

      zypper in -t patch openSUSE-2020-1529=1



Package List:

   - openSUSE Backports SLE-15-SP2 (aarch64 ppc64le s390x x86_64):

      singularity-3.6.3-bp152.2.8.1


References:

   https://www.suse.com/security/cve/CVE-2020-25039.html
   https://www.suse.com/security/cve/CVE-2020-25040.html
   https://bugzilla.suse.com/1176705
   https://bugzilla.suse.com/1176707

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