GHSA-pvxj-25m6-7vqr

Suggest an improvement
Source
https://github.com/advisories/GHSA-pvxj-25m6-7vqr
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/04/GHSA-pvxj-25m6-7vqr/GHSA-pvxj-25m6-7vqr.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-pvxj-25m6-7vqr
Aliases
Published
2024-04-24T21:01:59Z
Modified
2024-07-08T20:41:59Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Rancher Privilege escalation vulnerability via malicious "Connection" header
Details

A vulnerability was discovered in Rancher 2.0.0 through the aforementioned patched versions, where a malicious Rancher user could craft an API request directed at the proxy for the Kubernetes API of a managed cluster to gain access to information they do not have access to. This is done by passing the "Impersonate-User" or "Impersonate-Group" header in the Connection header, which is then correctly removed by the proxy. At this point, instead of impersonating the user and their permissions, the request will act as if it was from the Rancher management server and incorrectly return the information. The vulnerability is limited to valid Rancher users with some level of permissions on the cluster. There is not a direct mitigation besides upgrading to the patched Rancher versions.

References

Affected packages

Go / github.com/rancher/rancher

Package

Name
github.com/rancher/rancher
View open source insights on deps.dev
Purl
pkg:golang/github.com/rancher/rancher

Affected ranges

Type
SEMVER
Events
Introduced
2.0.0
Fixed
2.4.16

Go / github.com/rancher/rancher

Package

Name
github.com/rancher/rancher
View open source insights on deps.dev
Purl
pkg:golang/github.com/rancher/rancher

Affected ranges

Type
SEMVER
Events
Introduced
2.5.0
Fixed
2.5.9