Trustee's attestation-policy endpoint is not protected by admin autentication
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.
Summary
Confidential Containers's Trustee project contains tools and components for attesting confidential guests and providing secrets to them. In versions prior to 0.15.0, the attestation-policy endpoint didn't check if the kbs-client submitting the request was actually authenticated (had the right key). This allowed any kbs-client to actually change the attestation policy. Version 0.15.0 fixes the issue.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| confidential-containers | trustee | before 0.15.0 | 0.15.0 | Patch available | CNA |
- trustee Vendorconfidential-containers Affected before 0.15.0 Fixed in 0.15.0 Patch available CNA
Remediation
- Fix · CNA trustee (confidential-containers) Fixed in 0.15.0
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
Not affected: 2 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2025-61779
References
More confidential-containers vulnerabilities
- TI-2024-34885 The Attestation Results Token can be arbitrarily modified without being detected in Trustee CVSS 3.1HIGH 8.1
- TI-2026-35203 Path traversal in confidential-containers guest-components CVSS 3.1MEDIUM 6.4
Sources
- CVE-2025-61779 · CVE Program
- CVE-2025-61779 · NVD
- FIRST EPSS
- CVE-2025-61779 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences