Velero is an open source tool for backing up, restoring, and migrating Kubernetes cluster resources and persistent volumes. Prior to 1.18.1, an attacker who compromises the backup object-storage backend can upload a malicious backup tarball containing parent-directory paths that escape the extraction directory during restore and overwrite sensitive files in the Velero pod filesystem. This issue is fixed in version 1.18.1.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
Active
User action required
Impact Assessment
Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 4
https://github.com/securego/gosec/issues/324
security-advisories@github.com
https://github.com/velero-io/velero/commit/3f8e3588496391979915ace065f732a9013c…
security-advisories@github.com
https://github.com/velero-io/velero/commit/c7fa4bfe3571667e9731f3f504da3c6be709…
security-advisories@github.com
https://github.com/velero-io/velero/security/advisories/GHSA-j2g6-362q-6qc6
security-advisories@github.com