CVE-2023-25173

containerd is an open source container runtime. A bug was found in containerd prior to versions 1.6.18 and 1.5.18 where supplementary groups are not set up properly inside a container. If an attacker has direct access to a container and manipulates their supplementary group access, they may be able to use supplementary group access to bypass primary group restrictions in some cases, potentially gaining access to sensitive information or gaining the ability to execute code in that container. Downstream applications that use the containerd client library may be affected as well.

This bug has been fixed in containerd v1.6.18 and v.1.5.18. Users should update to these versions and recreate containers to resolve this issue. Users who rely on a downstream application that uses containerd's client library should check that application for a separate advisory and instructions. As a workaround, ensure that the "USER $USERNAME" Dockerfile instruction is not used. Instead, set the container entrypoint to a value similar to ENTRYPOINT ["su", "-", "user"] to allow su to properly set up supplementary groups.

containerd is an open source container runtime. A bug was found in containerd prior to versions 1.6.18 and 1.5.18 where supplementary groups are not set up properly inside a container. If an attacker has direct access to a container and manipulates their supplementary group access, they may be able to use supplementary group access to bypass primary group restrictions in some cases, potentially gaining access to sensitive information or gaining the ability to execute code in that container. Downstream applications that use the containerd client library may be affected as well. This bug has been fixed in containerd v1.6.18 and v.1.5.18. Users should update to these versions and recreate containers to resolve this issue. Users who rely on a downstream application that uses containerd's client library should check that application for a separate advisory and instructions. As a workaround, ensure that the "USER $USERNAME" Dockerfile instruction is not used. Instead, set the container entrypoint to a value similar to ENTRYPOINT ["su", "-", "user"] to allow su to properly set up supplementary groups.

Impact

A bug was found in containerd where supplementary groups are not set up properly inside a container. If an attacker has direct access to a container and manipulates their supplementary group access, they may be able to use supplementary group access to bypass primary group restrictions in some cases, potentially gaining access to sensitive information or gaining the ability to execute code in that container.

Downstream applications that use the containerd client library may be affected as well.

Patches

This bug has been fixed in containerd v1.6.18 and v.1.5.18. Users should update to these versions and recreate containers to resolve this issue. Users who rely on a downstream application that uses containerd's client library should check that application for a separate advisory and instructions.

Workarounds

Ensure that the "USER $USERNAME" Dockerfile instruction is not used. Instead, set the container entrypoint to a value similar to ENTRYPOINT ["su", "-", "user"] to allow su to properly set up supplementary groups.

References

• https://www.benthamsgaze.org/2022/08/22/vulnerability-in-linux-containers-investigation-and-mitigation/
• Docker/Moby: CVE-2022-36109, fixed in Docker 20.10.18
• CRI-O: CVE-2022-2995, fixed in CRI-O 1.25.0
• Podman: CVE-2022-2989, fixed in Podman 3.0.1 and 4.2.0
• Buildah: CVE-2022-2990, fixed in Buildah 1.27.1

Note that CVE IDs apply to a particular implementation, even if an issue is common.

For more information

If you have any questions or comments about this advisory:

• Open an issue in containerd
• Email us at [email protected]

To report a security issue in containerd:

• Report a new vulnerability
• Email us at [email protected]

containerd is an industry-standard container runtime with an emphasis on simplicity, robustness and portability. It is available as a daemon for Linux and Windows, which can manage the complete container lifecycle of its host system: image transfer and storage, container execution and supervision, low-level storage and network attachments, etc.

Security Fix(es):

containerd is an open source container runtime. Before versions 1.6.18 and 1.5.18, when importing an OCI image, there was no limit on the number of bytes read for certain files. A maliciously crafted image with a large file where a limit was not applied could cause a denial of service. This bug has been fixed in containerd 1.6.18 and 1.5.18. Users should update to these versions to resolve the issue. As a workaround, ensure that only trusted images are used and that only trusted users have permissions to import images.(CVE-2023-25153)

containerd is an open source container runtime. A bug was found in containerd prior to versions 1.6.18 and 1.5.18 where supplementary groups are not set up properly inside a container. If an attacker has direct access to a container and manipulates their supplementary group access, they may be able to use supplementary group access to bypass primary group restrictions in some cases, potentially gaining access to sensitive information or gaining the ability to execute code in that container. Downstream applications that use the containerd client library may be affected as well. This bug has been fixed in containerd v1.6.18 and v.1.5.18. Users should update to these versions and recreate containers to resolve this issue. Users who rely on a downstream application that uses containerd's client library should check that application for a separate advisory and instructions. As a workaround, ensure that the "USER $USERNAME" Dockerfile instruction is not used. Instead, set the container entrypoint to a value similar to ENTRYPOINT ["su", "-", "user"] to allow su to properly set up supplementary groups.(CVE-2023-25173)

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

Security Fix(es):

• go-yaml: Improve heuristics preventing CPU/memory abuse by parsing malicious or large YAML documents (CVE-2022-3064)

• golang: html/template: improper handling of JavaScript whitespace (CVE-2023-24540)

• net/http, golang.org/x/net/http2: avoid quadratic complexity in HPACK decoding (CVE-2022-41723)

• golang: crypto/tls: large handshake records may cause panics (CVE-2022-41724)

• golang: net/http, mime/multipart: denial of service from excessive resource consumption (CVE-2022-41725)

• golang.org/x/net/html: Cross site scripting (CVE-2023-3978)

• golang: net/http, net/textproto: denial of service from excessive memory allocation (CVE-2023-24534)

• golang: net/http, net/textproto, mime/multipart: denial of service from excessive resource consumption (CVE-2023-24536)

• golang: go/parser: Infinite loop in parsing (CVE-2023-24537)

• golang: html/template: backticks not treated as string delimiters (CVE-2023-24538)

• golang: html/template: improper sanitization of CSS values (CVE-2023-24539)

• containerd: Supplementary groups are not set up properly (CVE-2023-25173)

• runc: Rootless runc makes /sys/fs/cgroup writable (CVE-2023-25809)

• runc: volume mount race condition (regression of CVE-2019-19921) (CVE-2023-27561)

• runc: AppArmor can be bypassed when /proc inside the container is symlinked with a specific mount configuration (CVE-2023-28642)

• golang: html/template: improper handling of empty HTML attributes (CVE-2023-29400)

• golang: net/http: insufficient sanitization of Host header (CVE-2023-29406)

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 8.9 Release Notes linked from the References section.

containerd is an open source container runtime. A bug was found in containerd prior to versions 1.6.18 and 1.5.18 where supplementary groups are not set up properly inside a container. If an attacker has direct access to a container and manipulates their supplementary group access, they may be able to use supplementary group access to bypass primary group restrictions in some cases, potentially gaining access to sensitive information or gaining the ability to execute code in that container. Downstream applications that use the containerd client library may be affected as well. This bug has been fixed in containerd v1.6.18 and v.1.5.18. Users should update to these versions and recreate containers to resolve this issue. Users who rely on a downstream application that uses containerd's client library should check that application for a separate advisory and instructions. As a workaround, ensure that the "USER $USERNAME" Dockerfile instruction is not used. Instead, set the container entrypoint to a value similar to ENTRYPOINT ["su", "-", "user"] to allow su to properly set up supplementary groups.

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):

• golang: html/template: improper handling of JavaScript whitespace (CVE-2023-24540)
• net/http, golang.org/x/net/http2: avoid quadratic complexity in HPACK decoding (CVE-2022-41723)
• golang: crypto/tls: large handshake records may cause panics (CVE-2022-41724)
• golang: net/http, mime/multipart: denial of service from excessive resource consumption (CVE-2022-41725)
• golang: net/http, net/textproto: denial of service from excessive memory allocation (CVE-2023-24534)
• golang: net/http, net/textproto, mime/multipart: denial of service from excessive resource consumption (CVE-2023-24536)
• golang: html/template: backticks not treated as string delimiters (CVE-2023-24538)
• golang: html/template: improper sanitization of CSS values (CVE-2023-24539)
• containerd: Supplementary groups are not set up properly (CVE-2023-25173)
• golang: html/template: improper handling of empty HTML attributes (CVE-2023-29400)
• golang: net/http: insufficient sanitization of Host header (CVE-2023-29406)

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: html/template: improper handling of JavaScript whitespace (CVE-2023-24540)
• net/http, golang.org/x/net/http2: avoid quadratic complexity in HPACK decoding (CVE-2022-41723)
• golang: crypto/tls: large handshake records may cause panics (CVE-2022-41724)
• golang: net/http, mime/multipart: denial of service from excessive resource consumption (CVE-2022-41725)
• golang.org/x/net/html: Cross site scripting (CVE-2023-3978)
• golang: net/http, net/textproto: denial of service from excessive memory allocation (CVE-2023-24534)
• golang: net/http, net/textproto, mime/multipart: denial of service from excessive resource consumption (CVE-2023-24536)
• golang: go/parser: Infinite loop in parsing (CVE-2023-24537)
• golang: html/template: backticks not treated as string delimiters (CVE-2023-24538)
• golang: html/template: improper sanitization of CSS values (CVE-2023-24539)
• containerd: Supplementary groups are not set up properly (CVE-2023-25173)
• golang: html/template: improper handling of empty HTML attributes (CVE-2023-29400)
• golang: net/http: insufficient sanitization of Host header (CVE-2023-29406)

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

Security Fix(es):

• go-yaml: Improve heuristics preventing CPU/memory abuse by parsing malicious or large YAML documents (CVE-2022-3064)
• golang: html/template: improper handling of JavaScript whitespace (CVE-2023-24540)
• net/http, golang.org/x/net/http2: avoid quadratic complexity in HPACK decoding (CVE-2022-41723)
• golang: crypto/tls: large handshake records may cause panics (CVE-2022-41724)
• golang: net/http, mime/multipart: denial of service from excessive resource consumption (CVE-2022-41725)
• golang.org/x/net/html: Cross site scripting (CVE-2023-3978)
• golang: net/http, net/textproto: denial of service from excessive memory allocation (CVE-2023-24534)
• golang: net/http, net/textproto, mime/multipart: denial of service from excessive resource consumption (CVE-2023-24536)
• golang: go/parser: Infinite loop in parsing (CVE-2023-24537)
• golang: html/template: backticks not treated as string delimiters (CVE-2023-24538)
• golang: html/template: improper sanitization of CSS values (CVE-2023-24539)
• containerd: Supplementary groups are not set up properly (CVE-2023-25173)
• runc: Rootless runc makes /sys/fs/cgroup writable (CVE-2023-25809)
• runc: volume mount race condition (regression of CVE-2019-19921) (CVE-2023-27561)
• runc: AppArmor can be bypassed when /proc inside the container is symlinked with a specific mount configuration (CVE-2023-28642)
• golang: html/template: improper handling of empty HTML attributes (CVE-2023-29400)
• golang: net/http: insufficient sanitization of Host header (CVE-2023-29406)

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.

Supplementary groups are not set up properly inside a container. If an attacker has direct access to a container and manipulates their supplementary group access, they may be able to use supplementary group access to bypass primary group restrictions in some cases and potentially escalate privileges in the container. Uses of the containerd client library may also have improperly setup supplementary groups.

Memory leak. (CVE-2022-23471) Denial of service with maliciously crafted image with a large file (CVE-2023-25153) Security bypass due to improper supplementary group handling. (CVE-2023-25173)

These are all security issues fixed in the containerd-1.6.19-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the helm-3.13.0-2.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the helm3-3.19.2-1.1 package on the GA media of openSUSE Tumbleweed.

This update for containerd fixes the following issues:

Update to containerd v1.6.19:

Security fixes:

• CVE-2023-25153: Fixed OCI image importer memory exhaustion (bnc#1208423).
• CVE-2023-25173: Fixed supplementary groups not set up properly (bnc#1208426).

This update for containerd fixes the following issues:

Update to containerd v1.6.19:

Security fixes:

• CVE-2023-25153: Fixed OCI image importer memory exhaustion (bnc#1208423).
• CVE-2023-25173: Fixed supplementary groups not set up properly (bnc#1208426).

This update for helm fixes the following issues:

helm was updated to version 3.13.1:

• Fixing precedence issue with the import of values.
• Add missing with clause to release gh action
• FIX Default ServiceAccount yaml
• fix(registry): unswallow error
• remove useless print during prepareUpgrade
• fix(registry): address anonymous pull issue
• Fix missing run statement on release action
• Write latest version to get.helm.sh bucket
• Increased release information key name max length.

helm was updated to version 3.13.0 (bsc#1215588):

• Fix leaking goroutines in Install
• Update Helm to use k8s 1.28.2 libraries
• make the dependabot k8s.io group explicit
• use dependabot's group support for k8s.io dependencies
• doc:Executing helm rollback release 0 will roll back to the previous release
• Use labels instead of selectorLabels for pod labels
• fix(helm): fix GetPodLogs, the hooks should be sorted before get the logs of each hook
• chore: HTTPGetter add default timeout
• Avoid nil dereference if passing a nil resolver
• Add required changes after merge
• Fix #3352, add support for --ignore-not-found just like kubectl delete
• Fix helm may identify achieve of the application/x-gzip as application/vnd.ms-fontobject
• Restore helm get metadata command
• Revert 'Add helm get metadata command'
• test: replace ensure.TempDir with t.TempDir
• use json api url + report curl/wget error on fail
• Added error in case try to supply custom label with name of system label during install/upgrade
• fix(main): fix basic auth for helm pull or push
• cmd: support generating index in JSON format
• repo: detect JSON and unmarshal efficiently
• Tweaking new dry-run internal handling
• bump kubernetes modules to v0.27.3
• Remove warning for template directory not found.
• Added tests for created OCI annotation time format
• Add created OCI annotation
• Fix multiple bugs in values handling
• chore: fix a typo in manager.go
• add GetRegistryClient method
• oci: add tests for plain HTTP and insecure HTTPS registries
• oci: Add flag --plain-http to enable working with HTTP registries
• docs: add an example for using the upgrade command with existing values
• Replace fmt.Fprintf with fmt.Fprint in get_metadata.go
• Replace fmt.Fprintln with fmt.Fprintf in get_metadata.go
• update kubernetes dependencies from v0.27.0 to v0.27.1
• Add ClientOptResolver to test util file
• Check that missing keys are still handled in tpl
• tests: change crd golden file to match after #11870
• Adding details on the Factory interface
• update autoscaling/v2beta1 to autoscaling/v2 in skeleton chart
• feat(helm): add ability for --dry-run to do lookup functions When a helm command is run with the --dry-run flag, it will try to connect to the cluster to be able to render lookup functions. Closes #8137
• bugfix:(#11391) helm lint infinite loop when malformed template object
• pkg/engine: fix nil-dereference
• pkg/chartutil: fix nil-dereference
• pkg/action: fix nil-dereference
• full source path when output-dir is not provided
• added Contributing.md section and ref link in the README
• feat(helm): add ability for --dry-run to do lookup functions When a helm command is run with the --dry-run flag, it will try to connect to the cluster if the value is 'server' to be able to render lookup functions. Closes #8137
• feat(helm): add ability for --dry-run to do lookup functions
• Add CHART, VERSION and APP_VERSION fields to get all command output
• Adjust get command description to account metadata
• add volumes and volumeMounts in chartutil
• Seed a default switch to control automountServiceAccountToken
• Avoid confusing error when passing in '--version X.Y.Z'
• Add helm get metadata command
• Use wrapped error so that ErrNoObjectsVisited can be compared after…

David Korczynski and Adam Korczynski discovered that containerd incorrectly processed certain images with large files. An attacker could possibly use this issue to cause containerd to crash, resulting in a denial of service. (CVE-2023-25153)

It was discovered that containerd incorrectly set up supplementary groups inside a container. An attacker with direct access to the container could possibly use this issue to obtain sensitive information or execute code with higher privileges. (CVE-2023-25173)