Description
A flaw was found in KubeVirt-s virt-handler network cache handling. The WriteToCachedFile function writes data to a launcher-rooted path using os.WriteFile and os.Chown without symlink protection. A user with access to the virt-launcher container can plant a symlink at the cache file path, causing virt-handler to follow it and overwrite an arbitrary host file with JSON content and change its ownership.
CVSS 4.2EPSS 0.107%Risk 0.42
View source- Published
- 2026-06-26 00:16:51
- Affected versions
- unknown
- Type
- Critical software
- Vector
- CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L