CVE-2020-11093

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Summary

CVECVE-2020-11093
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-12-24 20:15:00 UTC
Updated2020-12-31 19:25:00 UTC
DescriptionHyperledger Indy Node is the server portion of a distributed ledger purpose-built for decentralized identity. In Hyperledger Indy before version 1.12.4, there is lack of signature verification on a specific transaction which enables an attacker to make certain unauthorized alterations to the ledger. Updating a DID with a nym transaction will be written to the ledger if neither ROLE or VERKEY are being changed, regardless of sender. A malicious DID with no particular role can ask an update for another DID (but cannot modify its verkey or role). This is bad because 1) Any DID can write a nym transaction to the ledger (i.e., any DID can spam the ledger with nym transactions), 2) Any DID can change any other DID's alias, 3) The update transaction modifies the ledger metadata associated with a DID.

Risk And Classification

Problem Types: CWE-347

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Linuxfoundation Indy-node All All All All
Application Linuxfoundation Indy-node All All All All

References

ReferenceSourceLinkTags
changed auth rules check to skip those without verkey and role · hyperledger/indy-node@55056f2 · GitHub MISC github.com Patch, Third Party Advisory
indy-node/CHANGELOG.md at master · hyperledger/indy-node · GitHub MISC github.com Release Notes, Third Party Advisory
Updating a DID with a nym transaction will be written to the ledger if neither ROLE or VERKEY are being changed, regardless of sender. · Advisory · hyperledger/indy-node · GitHub CONFIRM github.com Exploit, Third Party Advisory
indy-node/auth_rules.md at master · hyperledger/indy-node · GitHub MISC github.com Third Party Advisory
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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