Research / Finding
Update standard FS impl to write files with `0o600` permissions
F-AWSRUST-CACHE-001
Public snapshot: 26 Sep 2026. Status, releases and attribution belong to each source below; none is inferred from another record.
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Recorded evidence
—score not recorded
Update standard FS impl to write files with `0o600` permissions
fixed publicly
details
- Finding IDs
- F-AWSRUST-CACHE-001
- Status
- fixed publicly
- Reported via
- security contact
- Note
- public fix PR #4584 merged on 2026-03-27. updates unix cache-file writes to owner-only `0o600` permissions; AWS advised no separate advisory will be published.
F-AWSRUST-CACHE-001: Access control. Credential cache files are created with overly broad local permissions. Reviewed 24 Sep 2026. Mechanism assessed by 1seal.
Mechanism source for F-AWSRUST-CACHE-001
Security area (1seal assessment): Authorization. Credential-cache files receive owner-only permissions on Unix, restricting access by other local users. Reviewed 21 Sep 2026.
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