CVE-2020-11093
Description
Hyperledger 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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- https://github.com/hyperledger/indy-node/security/advisories/GHSA-wh2w-39f4-rpv2
- https://nvd.nist.gov/vuln/detail/CVE-2020-11093
- https://github.com/hyperledger/indy-node/commit/55056f22c83b7c3520488b615e1577e0f895d75a
- https://github.com/hyperledger/indy-node
- https://github.com/hyperledger/indy-node/blob/master/CHANGELOG.md#1124
- https://github.com/hyperledger/indy-node/blob/master/docs/source/auth_rules.md
- https://github.com/pypa/advisory-database/tree/main/vulns/indy-node/PYSEC-2020-48.yaml
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.