App token disclosure via cross-sidecar metadata forwarding
Published May 23, 2024 · Updated Aug 2, 2024
Information exposure in Dapr 1.13.0 through 1.13.2 allows remote attackers to obtain an invoker app token through gRPC proxy calls. The grpc_proxy intercept path appends the caller sidecar's local APP_API_TOKEN to inter-sidecar egress metadata instead of limiting it to calls into the local app. Exploitation requires gRPC proxy service invocation with App API token authentication; the receiving app can reuse the token against an originating app listening on an accessible address.
Summary
What happened
Information exposure in Dapr 1.13.0 through 1.13.2 allows remote attackers to obtain an invoker app token through gRPC proxy calls. The grpc_proxy intercept path appends the caller sidecar's local APP_API_TOKEN to inter-sidecar egress metadata instead of limiting it to calls into the local app. Exploitation requires gRPC proxy service invocation with App API token authentication; the receiving app can reuse the token against an originating app listening on an accessible address.
The record
- CVE
- CVE-2024-35223
- Published
- May 23, 2024
- Updated
- Aug 2, 2024
- Vendor
- Dapr
- Product
- Dapr
- Classifications
- CWE-200, T1552
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 23, 2024CVE publishedPublication date reported by the CVE source.
- Aug 2, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.11.2 <=1.13.3
- Affected versionversion=>= 1.13.0, < 1.13.3
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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