Migration Toolkit for Containers 1.8 release notes

Migration Toolkit for Containers (MTC) 1.8.4 has the following technical changes:

MTC 1.8.4 adds support for KubeVirt Virtual Machines (VMs) with Direct Volume Migration (DVM).

MTC 1.8.4 has the following major resolved issues:

There is a bug in the python3-openshift package that installing OpenShift Virtualization exposes, with an exception, ValueError: too many values to unpack, returned during the task. Earlier versions of MTC are impacted, while MTC 1.8.4 has implemented a workaround. Updating to MTC 1.8.4 means you are no longer affected by this issue. (OCPBUGS-38116)

When trying to create a migration plan from the MTC UI, the migration plan wizard becomes stuck at the Namespaces step. This issue has been resolved in MTC 1.8.4. (MIG-1597)

During the migration of an application, all the necessary steps, including the backup, DVM, and restore, are successfully completed. However, the migration is marked as unsuccessful with the error message no matches for kind Virtual machine in version kubevirt/v1. (MIG-1594)

On performing a migration from source cluster to target cluster, with the target namespace different from the source namespace, the DVM fails. (MIG-1592)

When using Direct Image Migration (DIM), if a label selector is set on the migration plan, DIM does not respect it and attempts to migrate all imagestreams in the namespace. (MIG-1533)

MTC 1.8.4 has the following known issues:

The associated Security Context Constraints (SCCs) for service accounts in OpenShift Container Platform 4.12 cannot be migrated. This issue is planned to be resolved in a future release of MTC. (MIG-1454).

The DVM phase fails due to the Rsync pod failing to start, because of a permission issue.

(BZ#2231403)

When migrating an application including BuildConfig from source to target cluster, the builder pod results in error, failing to push the image to the image registry.

(BZ#2234781)

When creating a new state migration plan that results in a conflict error, that error is cleared shorty after it is displayed.

(BZ#2144299)

The PvCapacityAdjustmentRequired warning fails to appear in the migration plan after the pv_resizing_threshold is adjusted.

(BZ#2270160)

Migration Toolkit for Containers (MTC) 1.8.3 has the following technical changes:

MTC 1.8.3 adds support to OpenShift API for Data Protection (OADP) as a dependency of MTC 1.8.z.

MTC 1.8.3 has the following major resolved issues:

In previous releases of MTC, a vulnerability was found in Golang’s protobuf module, where the unmarshal function entered an infinite loop while processing certain invalid inputs. Consequently, an attacker provided carefully constructed invalid inputs, which caused the function to enter an infinite loop.

With this update, the unmarshal function works as expected.

For more information, see CVE-2024-24786.

In previous releases of MTC, a vulnerability was discovered in Axios 1.5.1 that inadvertently revealed a confidential XSRF-TOKEN stored in cookies by including it in the HTTP header X-XSRF-TOKEN for every request made to the host, allowing attackers to view sensitive information.

For more information, see CVE-2023-45857.

In previous releases of MTC, some files did not migrate when deploying an application with a route. The Restic backup did not function as expected when the quiesce option was unchecked for the source workload.

This issue has been resolved in MTC 1.8.3.

For more information, see BZ#2242064.

The MigrationController failed to install due to an unsupported value error in Velero. Updating OADP 1.3.0 to OADP 1.3.1 resolves this problem. For more information, see BZ#2267018.

This issue has been resolved in MTC 1.8.3.

For a complete list of all resolved issues, see the list of MTC 1.8.3 resolved issues in Jira.

Migration Toolkit for Containers (MTC) 1.8.3 has the following known issues:

There is a bug in the python3-openshift package that installing OpenShift Virtualization exposes, with an exception, ValueError: too many values to unpack, returned during the task. MTC 1.8.4 has implemented a workaround. Updating to MTC 1.8.4 means you are no longer affected by this issue. (OCPBUGS-38116)

The associated Security Context Constraints (SCCs) for service accounts in OpenShift Container Platform version 4.12 cannot be migrated. This issue is planned to be resolved in a future release of MTC. (MIG-1454).

For a complete list of all known issues, see the list of MTC 1.8.3 known issues in Jira.

This release has the following major resolved issues:

In previous releases of Migration Toolkit for Containers (MTC), after editing the replication repository, adding a custom CA certificate, successfully connecting the repository, and triggering a migration, a failure occurred during the backup phase.

In previous releases of (MTC), versions before 4.1.3 of the tough-cookie package used in MTC were vulnerable to prototype pollution. This vulnerability occurred because CookieJar did not handle cookies properly when the value of the rejectPublicSuffixes was set to false.

For more details, see (CVE-2023-26136)

In previous releases of (MTC), versions of the semver package before 7.5.2, used in MTC, were vulnerable to Regular Expression Denial of Service (ReDoS) from the function newRange, when untrusted user data was provided as a range.

For more details, see (CVE-2022-25883)

MTC 1.8.2 has the following known issues:

There is a bug in the python3-openshift package that installing OpenShift Virtualization exposes, with an exception, ValueError: too many values to unpack, returned during the task. MTC 1.8.4 has implemented a workaround. Updating to MTC 1.8.4 means you are no longer affected by this issue. (OCPBUGS-38116)

Migration Toolkit for Containers (MTC) 1.8.1 has the following major resolved issues:

A flaw was found in handling multiplexed streams in the HTTP/2 protocol, which is used by MTC. A client could repeatedly make a request for a new multiplex stream and immediately send an RST_STREAM frame to cancel it. This creates additional workload for the server in terms of setting up and dismantling streams, while avoiding any server-side limitations on the maximum number of active streams per connection, resulting in a denial of service due to server resource consumption. (BZ#2245079)

It is advised to update to MTC 1.8.1 or later, which resolve this issue.

For more details, see (CVE-2023-39325) and (CVE-2023-44487)

Migration Toolkit for Containers (MTC) 1.8.1 has the following known issues:

There is a bug in the python3-openshift package that installing OpenShift Virtualization exposes. An exception, ValueError: too many values to unpack, is returned during the task. MTC 1.8.4 has implemented a workaround. Updating to MTC 1.8.4 means you are no longer affected by this issue. (OCPBUGS-38116)

Migration Toolkit for Containers (MTC) 1.8.0 has the following resolved issues:

In previous releases, an indirect migration became stuck at the backup stage, due to InvalidImageName error. ((BZ#2233097))

In previous releases, on performing an indirect migration, the migration became stuck at the Stage Restore step, waiting for the podvolumerestore to be completed. ((BZ#2233868))

In previous releases, on migrating an application to the target cluster, the migrated application failed to pull the image from the internal image registry resulting in an application failure. ((BZ#2233103))

In previous releases, on an Azure cluster, when backing up to Azure storage, the migration failed at the Backup stage. ((BZ#2238974))

MTC 1.8.0 has the following known issues:

There is a bug in the python3-openshift package that installing OpenShift Virtualization exposes, with an exception ValueError: too many values to unpack returned during the task. MTC 1.8.4 has implemented a workaround. Updating to MTC 1.8.4 means you are no longer affected by this issue. (OCPBUGS-38116)

In this release, on upgrading the MTC Operator from 1.7.x to 1.8.x, the old Restic pods are not being removed. Therefore after the upgrade, both Restic and node-agent pods are visible in the namespace. ((BZ#2236829))

In this release, on migrating an application including a BuildConfig from a source to target cluster, builder pod results in error, failing to push the image to the image registry. ((BZ#2234781))

In this release, after enabling Require SSL verification and adding content to the CA bundle file for an MCG NooBaa bucket in MigStorage, the connection fails as expected. However, when reverting these changes by removing the CA bundle content and clearing Require SSL verification, the connection still fails. The issue is only resolved by deleting and re-adding the repository. ((BZ#2240052))

In (MTC), after editing the replication repository, adding a custom CA certificate, successfully connecting the repository, and triggering a migration, a failure occurs during the backup phase.

This issue is resolved in MTC 1.8.2.

Versions before 4.1.3 of the tough-cookie package, used in MTC, are vulnerable to prototype pollution. This vulnerability occurs because CookieJar does not handle cookies properly when the value of the rejectPublicSuffixes is set to false.

This issue is resolved in MTC 1.8.2.

For more details, see (CVE-2023-26136)

In previous releases of (MTC), versions of the semver package before 7.5.2, used in MTC, are vulnerable to Regular Expression Denial of Service (ReDoS) from the function newRange, when untrusted user data is provided as a range.

This issue is resolved in MTC 1.8.2.

For more details, see (CVE-2022-25883)

This release has the following technical changes: