Static memo configuration in mpp Tempo disables per-challenge attribution binding, enabling third-party replay
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| ZenHive | mpp | unaffected |
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| ZenHive | mpp | unaffected |
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No data.
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| Zenhive | Mpp |
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| Zenhive | Mpp |
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| Zenhive | Mpp |
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Vendor Workaround
Remove the static "memo" from the Tempo method_config so verification falls back to the default per-challenge attribution binding, which ties each settled transfer to the challenge being verified. Where a static memo must be kept, configure a dedup store (for example MPP.Tempo.ConCacheStore) with a TTL at least as long as the challenge expiry, which reduces unlimited replay to a race on the transaction hash rather than closing it.
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.595% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Zenhive machine Payments Protocol
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| CPEs | cpe:2.3:a:zenhive:machine_payments_protocol:*:*:*:*:*:elixir:*:* | |
| Vendors & Products |
Zenhive machine Payments Protocol
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| Metrics |
cvssV3_1
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| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Zenhive
Zenhive mpp |
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| Vendors & Products |
Zenhive
Zenhive mpp |
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Authentication Bypass by Capture-replay in ZenHive mpp allows an unauthenticated third party to obtain paid resources by replaying a transfer settled by an unrelated payer. MPP.Methods.Tempo normally binds a settled TIP-20 TransferWithMemo to the specific challenge under verification through an attribution nonce carried in the memo. When a static "memo" is configured in method_config, check_matched_memo_binding/3 returns the match unconditionally and that binding is skipped, leaving only token, recipient, amount and the static memo value to match on. The static memo is echoed in every unauthenticated 402 response and Tempo transfers are public, so an attacker can take any matching transfer paid by a legitimate customer, request a fresh challenge for the same route, and present that transaction hash as a type="hash" credential. The hash path performs no sender or signature check tying the presenter to the wallet that broadcast the transfer. This issue affects mpp: from 0.6.1 before 0.6.4. | |
| Title | Static memo configuration in mpp Tempo disables per-challenge attribution binding, enabling third-party replay | |
| First Time appeared |
Zenhive
Zenhive mpp |
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| Weaknesses | CWE-294 | |
| CPEs | cpe:2.3:a:ZenHive:mpp:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Zenhive
Zenhive mpp |
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| References |
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| Metrics |
cvssV4_0
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