Red Hat Security Advisory: Red Hat Advanced Cluster Management for Kubernetes v2.12.8 security update

Important

Early versions of Operator-SDK provided an insecure method to allow operator containers to run in environments that used a random UID. Operator-SDK before 0.15.2 provided a script, user_setup, which modifies the permissions of the /etc/passwd file to 664 during build time. Developers who used Operator-SDK before 0.15.2 to scaffold their operator may still be impacted by this if the insecure user_setup script is still being used to build new container images. In affected images, the /etc/passwd file is created during build time with group-writable permissions and a group ownership of root (gid=0). An attacker who can execute commands within an affected container, even as a non-root user, may be able to leverage their membership in the root group to modify the /etc/passwd file. This could allow the attacker to add a new user with any arbitrary UID, including UID 0, leading to full root privileges within the container.

CWE-276 - Incorrect Default Permissions

A flaw was found in Lodash. A prototype pollution vulnerability in the _.unset and _.omit functions allows an attacker able to control property paths to delete methods from global prototypes. By removing essential functionalities, this can result in a denial of service.

CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

A flaw was found in database/sql. Concurrent queries can produce unexpected results when a query is cancelled during a Scan method call on returned Rows, creating a race condition. This vulnerability allows an attacker who can initiate and cancel queries to trigger this condition, possibly leading to inconsistent data being returned to the application.

CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

A flaw was found in the archive/tar package in the Go standard library. tar.Reader does not set a maximum size on the number of sparse region data blocks in GNU tar pax 1.0 sparse files. A specially crafted tar archive with a pax header indicating a big number of sparse regions can cause a Go program to try to allocate a large amount of memory, causing an out-of-memory condition and resulting in a denial of service.

CWE-770 - Allocation of Resources Without Limits or Throttling

An authorization error has been discovered in Grafana dashboards. The dashboard permissions API does not verify the target dashboard scope and only checks the dashboards.permissions:* action. As a result, a user who has permission management rights on one dashboard can read and modify permissions on other dashboards. This is an organization‑internal privilege escalation.

CWE-639 - Authorization Bypass Through User-Controlled Key