GHSA-q82v-h4rq-5c86 CVE-2024-58260 GO-2025-3983
Rancher update on users can deny the service to the admin
- Severity
- 7.6 / 10
- High · CVSS 3.1
- Exploit chance (EPSS)
- 0.46%
- Chance of exploitation in the next 30 days. Higher than 39.75% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-863 Incorrect Authorization
- Fix
2.12.2- Upgrade github.com/rancher/rancher to this version or later
Description
Impact
A vulnerability has been identified within Rancher Manager where a missing server-side validation on the .username field in Rancher can allow users with update permissions on other User resources to cause denial of access for targeted accounts. Specifically:
- Username takeover: A user with permission to update another user’s resource can set its
.usernameto "admin", preventing both the legitimate admin and the affected user from logging in, as Rancher enforces uniqueness at login time. - Account lockout: A user with update permissions on the admin account can change the admin’s username, effectively blocking administrative access to the Rancher UI.
This issue enables a malicious or compromised account with elevated update privileges on User resources to disrupt platform administration and user authentication.
Note: The users with these permissions to modify accounts and resources are considered as privileged users. For more information, please consult Rancher Manger’s documentation about global permissions.
Please consult the associated MITRE ATT&CK - Technique - Account Access Removal for further information about this category of attack.
Patches
This vulnerability is addressed by adding a new check in the webhook which blocks modifying usernames after it has been set. If it's empty then the username can be set to a username not already in use, but after that it is immutable.
Patched versions of Rancher include releases v2.12.2, v2.11.6, v2.10.10 and v2.9.12.
Workarounds
If you can't upgrade to a fixed version, please make sure that you are only granting update permissions on users’ related resources to trusted users.
References
If you have any questions or comments about this advisory:
- Reach out to the SUSE Rancher Security team for security related inquiries.
- Open an issue in the Rancher repository.
- Verify with our support matrix and product support lifecycle.
Affected versions
Go
| Package | Vulnerable | Fixed in |
|---|---|---|
| github.com/rancher/rancher | >= 2.12.0, < 2.12.2 |
2.12.2 |
| github.com/rancher/rancher | >= 2.11.0, < 2.11.6 |
2.11.6 |
| github.com/rancher/rancher | >= 2.10.0, < 2.10.10 |
2.10.10 |
| github.com/rancher/rancher | >= 2.9.0, < 2.9.12 |
2.9.12 |
| github.com/rancher/rancher | all versions |
No fix yet |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
github.com/rancher/rancher Go → 2.12.2
- go
go get github.com/rancher/rancher@v2.12.2 && go mod tidy
Severity breakdown
CVSS 3.1 7.6
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- High
- User interaction
- None
- Scope
- Changed
- Confidentiality
- None
- Integrity
- Low
- Availability
- High
Weakness
CWE-863: Incorrect Authorization
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
How to prevent it
- Architecture and Design: Divide the product into anonymous, normal, privileged, and administrative areas. Reduce the attack surface by carefully mapping roles with data and functionality. Use role-based access control (RBAC) [REF-229] to enforce the roles at the appropriate boundaries. Note that this approach may not protect against horizontal authorization, i.e., it will not protect a user from attacking others with the same role.
- Architecture and Design: Ensure that access control checks are performed related to the business logic. These checks may be different than the access control checks that are applied to more generic resources such as files, connections, processes, memory, and database records. For example, a database may restrict access for medical records to a specific database user, but each record might only be intended to be accessible to the patient and the patient's doctor [REF-7].
- Architecture and Design: Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. For example, consider using authorization frameworks such as the JAAS Authorization Framework [REF-233] and the OWASP ESAPI Access Control feature [REF-45].
- Architecture and Design: For web applications, make sure that the access control mechanism is enforced correctly at the server side on every page. Users should not be able to access any unauthorized functionality or information by simply requesting direct access to that page. One way to do this is to ensure that all pages containing sensitive information are not cached, and that all such pages restrict access to requests that are accompanied by an active and authenticated session token associated with a user who has the required permissions to access that page.
- System Configuration, Installation: Use the access control capabilities of your operating system and server environment and define your access control lists accordingly. Use a "default deny" policy when defining these ACLs.
References
Advisories
Packages
Other links
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-4j6x-2764-m8gh Rancher has over-inclusive team membership expansion in GitHub App authentication provider | High | Also affects github.com/rancher/rancher |
| GHSA-vx8h-4prv-g744 Rancher has Privilege Escalation from Project Owner to Host | High | Also affects github.com/rancher/rancher |
| GHSA-mhc6-2gfq-xx62 Rancher vulnerable to command injection through unsanitized YAML parameter | Critical | Also affects github.com/rancher/rancher |
| GHSA-5v3h-x4wf-5c35 Rancher Extensions have arbitrary file access via path traversal | High | Also affects github.com/rancher/rancher |
| GHSA-gqf8-rvrh-g7w6 Rancher cloud credentials can be used through proxy API by users without access | Critical | Also affects github.com/rancher/rancher |
| GHSA-hwm2-4ph6-w6m5 Rancher's restricted PodSecurityPolicy does not prevent containers from running as a privileged user | High | Also affects github.com/rancher/rancher |
| GHSA-mc24-7m59-4q5p Rancher CLI skips TLS verification on Rancher CLI login command | Medium | Also affects github.com/rancher/rancher |
| GHSA-mw39-9qc2-f7mg Rancher exposes sensitive information through audit logs | Medium | Also affects github.com/rancher/rancher |
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