CVE-2021-20291

A deadlock vulnerability was found in 'github.com/containers/storage' in versions before 1.28.1. When a container image is processed, each layer is unpacked using tar. If one of those layers is not a valid tar archive this causes an error leading to an unexpected situation where the code indefinitely waits for the tar unpacked stream, which never finishes. An attacker could use this vulnerability to craft a malicious image, which when downloaded and stored by an application using containers/storage, would then cause a deadlock leading to a Denial of Service (DoS).

A deadlock vulnerability was found in github.com/containers/storage in versions before 1.28.1. When a container image is processed, each layer is unpacked using tar. If one of those layers is not a valid tar archive this causes an error leading to an unexpected situation where the code indefinitely waits for the tar unpacked stream, which never finishes. An attacker could use this vulnerability to craft a malicious image, which when downloaded and stored by an application using containers/storage, would then cause a deadlock leading to a Denial of Service (DoS).

The container-tools module contains tools for working with containers, notably podman, buildah, skopeo, and runc.

Security Fix(es):

• buildah: Host environment variables leaked in build container when using chroot isolation (CVE-2021-3602)

• containers/storage: DoS via malicious image (CVE-2021-20291)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 8.5 Release Notes linked from the References section.

A deadlock vulnerability was found in 'github.com/containers/storage' in versions before 1.28.1. When a container image is processed, each layer is unpacked using tar. If one of those layers is not a valid tar archive this causes an error leading to an unexpected situation where the code indefinitely waits for the tar unpacked stream, which never finishes. An attacker could use this vulnerability to craft a malicious image, which when downloaded and stored by an application using containers/storage, would then cause a deadlock leading to a Denial of Service (DoS).

The container-tools module contains tools for working with containers, notably podman, buildah, skopeo, and runc.

For detailed information on changes in this release, see the AlmaLinuxRelease Notes linked from the References section.

The container-tools module contains tools for working with containers, notably podman, buildah, skopeo, and runc.

Security Fix(es):

• buildah: Host environment variables leaked in build container when using chroot isolation (CVE-2021-3602)

• containers/storage: DoS via malicious image (CVE-2021-20291)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

The podman tool manages pods, container images, and containers. It is part of the libpod library, which is for applications that use container pods. Container pods is a concept in Kubernetes.

Security Fix(es):

• golang.org/x/text: Panic in language.ParseAcceptLanguage while parsing -u- extension (CVE-2020-28851)
• golang.org/x/text: Panic in language.ParseAcceptLanguage while processing bcp47 tag (CVE-2020-28852)
• podman: podman machine spawns gvproxy with port bound to all IPs (CVE-2021-4024)
• podman: Remote traffic to rootless containers is seen as orginating from localhost (CVE-2021-20199)
• containers/storage: DoS via malicious image (CVE-2021-20291)
• golang: net/http/httputil: ReverseProxy forwards connection headers if first one is empty (CVE-2021-33197)
• golang: crypto/tls: certificate of wrong type is causing TLS client to panic (CVE-2021-34558)
• golang: crash in a golang.org/x/crypto/ssh server (CVE-2022-27191)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

The skopeo command lets you inspect images from container image registries, get images and image layers, and use signatures to create and verify files.

Security Fix(es):

• containers/storage: DoS via malicious image (CVE-2021-20291)
• golang: math/big.Rat: may cause a panic or an unrecoverable fatal error if passed inputs with very large exponents (CVE-2021-33198)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

The buildah package provides a tool for facilitating building OCI container images. Among other things, buildah enables you to: Create a working container, either from scratch or using an image as a starting point; Create an image, either from a working container or using the instructions in a Dockerfile; Build both Docker and OCI images.

Security Fix(es):

• containers/storage: DoS via malicious image (CVE-2021-20291)
• golang: net: lookup functions may return invalid host names (CVE-2021-33195)
• golang: net/http/httputil: ReverseProxy forwards connection headers if first one is empty (CVE-2021-33197)
• golang: math/big.Rat: may cause a panic or an unrecoverable fatal error if passed inputs with very large exponents (CVE-2021-33198)
• golang: crash in a golang.org/x/crypto/ssh server (CVE-2022-27191)
• podman: possible information disclosure and modification (CVE-2022-2989)
• buildah: possible information disclosure and modification (CVE-2022-2990)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

Due to a goroutine deadlock, using github.com/containers/storage/pkg/archive.DecompressStream on a xz archive returns a reader which will hang indefinitely when Close is called. An attacker can use this to cause denial of service if they are able to cause the caller to attempt to decompress an archive they control.

Information disclosure flaw was found in Buildah (CVE-2021-3602) podman allows forwarding hosts ports to vm from within vm (CVE-2021-4024) Allows use "../" separators in containernetworking/cni to reference binaries such as 'reboot' in network configuration (CVE-2021-20206) github.com/containers/storage ddos via crafted tar file (CVE-2021-20291) buildah improper checking of X.509 certificate (CVE-2021-34558) buildah improper Content-Type checking (CVE-2021-41190) podman privilege escalation (CVE-2022-1227) podman incorrect handling of the supplementary groups (CVE-2022-2989) buildah incorrect handling of the supplementary groups (CVE-2022-2990) skopeo/podman Denial of Service through unbounded cardinality, and potential memory exhaustion (CVE-2022-21698) buildah/podman AddHostKey denail of service (CVE-2022-27191) podman inheritable file capabilities (CVE-2022-27649) buildah inheritable file capabilities (CVE-2022-27651)

This update for conmon, libcontainers-common, libseccomp, podman fixes the following issues:

podman was updated to 3.4.4.

Security issues fixed:

• fix CVE-2021-41190 [bsc#1193273], opencontainers: OCI manifest and index parsing confusion

• fix CVE-2021-4024 [bsc#1193166], podman machine spawns gvproxy with port binded to all IPs

• fix CVE-2021-20199 [bsc#1181640], Remote traffic to rootless containers is seen as orginating from localhost

• Add: Provides: podman:/usr/bin/podman-remote subpackage for a clearer upgrade path from podman < 3.1.2

Update to version 3.4.4:

• Bugfixes

  • Fixed a bug where the podman exec command would, under some circumstances, print a warning message about failing to move conmon to the appropriate cgroup (#12535).
  • Fixed a bug where named volumes created as part of container creation (e.g. podman run --volume avolume:/a/mountpoint or similar) would be mounted with incorrect permissions (#12523).
  • Fixed a bug where the podman-remote create and podman-remote run commands did not properly handle the --entrypoint='' option (to clear the container's entrypoint) (#12521).

• Update to version 3.4.3:

  • Security

    • This release addresses CVE-2021-4024, where the podman machine command opened the gvproxy API (used to forward ports to podman machine VMs) to the public internet on port 7777.
    • This release addresses CVE-2021-41190, where incomplete specification of behavior regarding image manifests could lead to inconsistent decoding on different clients.

  • Features

    • The --secret type=mount option to podman create and podman run supports a new option, target=, which specifies where in the container the secret will be mounted (#12287).

  • Bugfixes

    • Fixed a bug where rootless Podman would occasionally print warning messages about failing to move the pause process to a new cgroup (#12065).
    • Fixed a bug where the podman run and podman create commands would, when pulling images, still require TLS even with registries set to Insecure via config file (#11933).
    • Fixed a bug where the podman generate systemd command generated units that depended on multi-user.target, which has been removed from some distributions (#12438).
    • Fixed a bug where Podman could not run containers with images that had /etc/ as a symlink (#12189).
    • Fixed a bug where the podman logs -f command would, when using the journald logs backend, exit immediately if the container had previously been restarted (#12263).
    • Fixed a bug where, in containers on VMs created by podman machine, the host.containers.internal name pointed to the VM, not the host system (#11642).
    • Fixed a bug where containers and pods created by the podman play kube command in VMs managed by podman machine would not automatically forward ports from the host machine (#12248).
    • Fixed a bug where podman machine init would fail on OS X when GNU Coreutils was installed (#12329).
    • Fixed a bug where podman machine start would exit before SSH on the started VM was accepting connections (#11532).
    • Fixed a bug where the podman run command with signal proxying (--sig-proxy) enabled could print an error if it attempted to send a signal to a container that had just exited (#8086).
    • Fixed a bug where the podman stats command would not return correct information for containers running Systemd as PID1 (#12400).
    • Fixed a bug where the podman image save command would fail on OS X when writing the image to STDOUT (#12402).
    • Fixed a bug where the podman ps command did not properly handle PS arguments which contained whitespace (#12452).
    • Fixed a bug where the podman-remote wait command could fail to detect that the container exited and return an error under some circumstances (#12457).
    • Fixed a bug where the Windows MSI installer for podman-remote would break the PATH environment variable by adding an extra ' (#11416).

  • API

    • The Libpod Play Kube…

These are all security issues fixed in the libcontainers-common-20210626-7.1 package on the GA media of openSUSE Tumbleweed.

This update for conmon, libcontainers-common, libseccomp, podman fixes the following issues:

podman was updated to 3.4.4.

Security issues fixed:

• fix CVE-2021-41190 [bsc#1193273], opencontainers: OCI manifest and index parsing confusion

• fix CVE-2021-4024 [bsc#1193166], podman machine spawns gvproxy with port binded to all IPs

• fix CVE-2021-20199 [bsc#1181640], Remote traffic to rootless containers is seen as orginating from localhost

• Add: Provides: podman:/usr/bin/podman-remote subpackage for a clearer upgrade path from podman < 3.1.2

Update to version 3.4.4:

• Bugfixes

  • Fixed a bug where the podman exec command would, under some circumstances, print a warning message about failing to move conmon to the appropriate cgroup (#12535).
  • Fixed a bug where named volumes created as part of container creation (e.g. podman run --volume avolume:/a/mountpoint or similar) would be mounted with incorrect permissions (#12523).
  • Fixed a bug where the podman-remote create and podman-remote run commands did not properly handle the --entrypoint='' option (to clear the container's entrypoint) (#12521).

• Update to version 3.4.3:

  • Security

    • This release addresses CVE-2021-4024, where the podman machine command opened the gvproxy API (used to forward ports to podman machine VMs) to the public internet on port 7777.
    • This release addresses CVE-2021-41190, where incomplete specification of behavior regarding image manifests could lead to inconsistent decoding on different clients.

  • Features

    • The --secret type=mount option to podman create and podman run supports a new option, target=, which specifies where in the container the secret will be mounted (#12287).

  • Bugfixes

    • Fixed a bug where rootless Podman would occasionally print warning messages about failing to move the pause process to a new cgroup (#12065).
    • Fixed a bug where the podman run and podman create commands would, when pulling images, still require TLS even with registries set to Insecure via config file (#11933).
    • Fixed a bug where the podman generate systemd command generated units that depended on multi-user.target, which has been removed from some distributions (#12438).
    • Fixed a bug where Podman could not run containers with images that had /etc/ as a symlink (#12189).
    • Fixed a bug where the podman logs -f command would, when using the journald logs backend, exit immediately if the container had previously been restarted (#12263).
    • Fixed a bug where, in containers on VMs created by podman machine, the host.containers.internal name pointed to the VM, not the host system (#11642).
    • Fixed a bug where containers and pods created by the podman play kube command in VMs managed by podman machine would not automatically forward ports from the host machine (#12248).
    • Fixed a bug where podman machine init would fail on OS X when GNU Coreutils was installed (#12329).
    • Fixed a bug where podman machine start would exit before SSH on the started VM was accepting connections (#11532).
    • Fixed a bug where the podman run command with signal proxying (--sig-proxy) enabled could print an error if it attempted to send a signal to a container that had just exited (#8086).
    • Fixed a bug where the podman stats command would not return correct information for containers running Systemd as PID1 (#12400).
    • Fixed a bug where the podman image save command would fail on OS X when writing the image to STDOUT (#12402).
    • Fixed a bug where the podman ps command did not properly handle PS arguments which contained whitespace (#12452).
    • Fixed a bug where the podman-remote wait command could fail to detect that the container exited and return an error under some circumstances (#12457).
    • Fixed a bug where the Windows MSI installer for podman-remote would break the PATH environment variable by adding an extra ' (#11416).

  • API

    • The Libpod Play Kube…

This update for libcontainers-common fixes the following issues:

libcontainers-common was updated:

• common component was updated to 0.44.0.
• storage component was updated to 1.36.0.
• image component was updated to 5.16.0.
• podman component was updated to 3.3.1.

3.3.1:

Bugfixes:

• Fixed a bug where unit files created by podman generate systemd could not cleanup shut down containers when stopped by systemctl stop .
• Fixed a bug where podman machine commands would not properly locate the gvproxy binary in some circumstances.
• Fixed a bug where containers created as part of a pod using the --pod-id-file option would not join the pod's network namespace .
• Fixed a bug where Podman, when using the systemd cgroups driver, could sometimes leak dbus sessions.
• Fixed a bug where the until filter to podman logs and podman events was improperly handled, requiring input to be negated .
• Fixed a bug where rootless containers using CNI networking run on systems using systemd-resolved for DNS would fail to start if resolved symlinked /etc/resolv.conf to an absolute path .

API:

• A large number of potential file descriptor leaks from improperly closing client connections have been fixed.

3.3.0:

Features:

• Containers inside VMs created by podman machine will now automatically handle port forwarding - containers in podman machine VMs that publish ports via --publish or --publish-all will have these ports not just forwarded on the VM, but also on the host system.
• The podman play kube command's --network option now accepts advanced network options (e.g. --network slirp4netns:port_handler=slirp4netns) .
• The podman play kube commmand now supports Kubernetes liveness probes, which will be created as Podman healthchecks.
• Podman now provides a systemd unit, podman-restart.service, which, when enabled, will restart all containers that were started with --restart=always after the system reboots.
• Rootless Podman can now be configured to use CNI networking by default by using the rootless_networking option in containers.conf.
• Images can now be pulled using image:tag@digest syntax (e.g. podman pull fedora:34@sha256:1b0d4ddd99b1a8c8a80e885aafe6034c95f266da44ead992aab388e6aa91611a) .
• The podman container checkpoint and podman container restore commands can now be used to checkpoint containers that are in pods, and restore those containers into pods.
• The podman container restore command now features a new option, --publish, to change the ports that are forwarded to a container that is being restored from an exported checkpoint.
• The podman container checkpoint command now features a new option, --compress, to specify the compression algorithm that will be used on the generated checkpoint.
• The podman pull command can now pull multiple images at once (e.g. podman pull fedora:34 ubi8:latest will pull both specified images).
• THe podman cp command can now copy files from one container into another directly (e.g. podman cp containera:/etc/hosts containerb:/etc/) .
• The podman cp command now supports a new option, --archive, which controls whether copied files will be chown'd to the UID and GID of the user of the destination container.
• The podman stats command now provides two additional metrics: Average CPU, and CPU time.
• The podman pod create command supports a new flag, --pid, to specify the PID namespace of the pod. If specified, containers that join the pod will automatically share its PID namespace.
• The podman pod create command supports a new flag, --infra-name, which allows the name of the pod's infra container to be set .
• The podman auto-update command has had its output reformatted - it is now much clearer what images were pulled and what containers were updated.
• The podman auto-update command now supports a new option, --dry-run, which reports what would be updated but does not actually perform the update .
• The…