Informazioni sul CVE-2023-46132
Crosslinking transaction attack in hyperledger/fabric
CWE ID: CWE-362
Base Score (CVSS): N/A
CVE: CVE-2023-46132
Descrizione: Hyperledger Fabric is an open source permissioned distributed ledger framework. Combining two molecules to one another, called “cross-linking” results in a molecule with a chemical formula that is composed of all atoms of the original two molecules. In Fabric, one can take a block of transactions and cross-link the transactions in a way that alters the way the peers parse the transactions. If a first peer receives a block B and a second peer receives a block identical to B but with the transactions being cross-linked, the second peer will parse transactions in a different way and thus its world state will deviate from the first peer. Orderers or peers cannot detect that a block has its transactions cross-linked, because there is a vulnerability in the way Fabric hashes the transactions of blocks. It simply and naively concatenates them, which is insecure and lets an adversary craft a “cross-linked block” (block with cross-linked transactions) which alters the way peers process transactions. For example, it is possible to select a transaction and manipulate a peer to completely avoid processing it, without changing the computed hash of the block. Additional validations have been added in v2.2.14 and v2.5.5 to detect potential cross-linking issues before processing blocks. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Vettore di attacco CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Punteggio CVSS
Il CVSS è un sistema di valutazione che misura la gravità di una vulnerabilità informatica considerando fattori come l’impatto potenziale, la probabilità di attacco e la facilità di esecuzione.
Riassunto: Accesso: Network, Privilegi: Low, Interazione utente: None, Confidenzialità: None, Integrità: High, Disponibilità: Low.
Dettaglio del Vettore
| Metrica | Valore | Significato | Descrizione |
|---|---|---|---|
| Attack Vector (AV) | N | Network | L’attacco può essere eseguito da remoto attraverso la rete. |
| Attack Complexity (AC) | L | Low | L’attacco non richiede condizioni particolari. |
| Privileges Required (PR) | L | Low | Richiede pochi privilegi. |
| User Interaction (UI) | N | None | Non è richiesta interazione dell’utente. |
| Scope (S) | U | Unchanged | Il raggio d’azione non cambia. |
| Confidentiality Impact (C) | N | None | Nessun impatto sulla riservatezza. |
| Integrity Impact (I) | H | High | Grave impatto sull’integrità. |
| Availability Impact (A) | L | Low | Interferenza limitata. |
Riferimenti esterni
Prodotti interessati
- hyperledger – fabric
Relazioni con altri prodotti
Produttore:hyperledger
Prodotto: fabric
Anno: 2023
CWE: CWE-362
CVSS: 0.0