Advisories for Cargo/Rustfs package

Invalid RPC signatures cause the server to log the shared HMAC secret (and expected signature), which exposes the secret to log readers and enables forged RPC calls.

The ImportIam admin API validates permissions using ExportIAMAction instead of ImportIAMAction, allowing a principal with export-only IAM permissions to perform import operations. Since importing IAM data performs privileged write actions (creating/updating users, groups, policies, and service accounts), this can lead to unauthorized IAM modification and privilege escalation.

A flawed deny_only short-circuit in RustFS IAM allows a restricted service account or STS credential to self-issue an unrestricted service account, inheriting the parent’s full privileges. This enables privilege escalation and bypass of session/inline policy restrictions.

RustFS Path Traversal Vulnerability Vulnerability Details CVE ID: Severity: Critical (CVSS estimated 9.9) Impact: Arbitrary File Read/Write Component: /rustfs/rpc/read_file_stream endpoint Root Cause: Insufficient path validation in crates/ecstore/src/disk/local.rs:1791 Vulnerable Code // local.rs:1791 - No path sanitization! let file_path = volume_dir.join(Path::new(&path)); // DANGEROUS! check_path_length(file_path.to_string_lossy().to_string().as_str())?; // Only checks length let mut f = self.open_file(file_path, O_RDONLY, volume_dir).await?; The code uses PathBuf::join() without: Canonicalization Path boundary validation Protection against ../ sequences Protection against absolute paths …

A malformed gRPC GetMetrics request causes get_metrics to unwrap() failed deserialization of metric_type/opts, panicking the handler thread and enabling remote denial of service of the metrics endpoint.

[PHASE 1] Baseline Testing ✓ Without token: REJECTED (Unauthenticated) ✓ With wrong token: REJECTED (Unauthenticated) [PHASE 2] Exploit ✓ With hardcoded token "rustfs rpc": ACCEPTED ✅ [PHASE 3] Sensitive API Access ✓ ServerInfo: SUCCESS - Configuration disclosed ✓ DiskInfo: SUCCESS - System information accessible [RESULT] VULNERABILITY CONFIRMED