Security readout for executives and security teams
Plain-English summary
This issue affects early beta Hyperledger Iroha builds. A validator could treat repeated signatures from the same node as different valid signatures, weakening the trust model for transactions or blocks. Business urgency depends on whether those beta versions were ever deployed in a real network.
Executive priority
Treat as urgent only if affected beta Iroha versions were deployed. If the organization never used those builds, residual risk is low. If used in a real ledger, assess transaction integrity and upgrade status promptly.
Technical view
CVE-2018-3756 is a transaction and block signature verification bypass in Hyperledger Iroha v1.0_beta and v1.0.0_beta-1. The validator could accept multiple signatures from one node when each used a random nonce, counting them as separate valid signatures.
Likely exposure
Exposure appears limited to Hyperledger Iroha deployments running v1.0_beta or v1.0.0_beta-1. The source bundle does not identify CPEs, downstream packages, hosted services, or later affected versions.
Exploitation context
The CVE record does not cite active exploitation, and it is not listed as KEV in the provided bundle. The issue is relevant to Iroha network validation and consensus integrity, not a generic internet-exposed service flaw.
Researcher notes
The public data is sparse: no CVSS, CWE, CPE, or exploit references are provided. The core weakness is duplicate signer acceptance due to nonce variation, which may undermine quorum or multisignature assumptions depending on network configuration.
Mitigation direction
- Inventory all Hyperledger Iroha nodes and record exact deployed versions.
- Check Hyperledger Iroha v1.0.0_beta-2 release guidance for remediation direction.
- Plan migration away from v1.0_beta and v1.0.0_beta-1 if present.
- Restrict validator participation to trusted operators until affected builds are removed.
Validation and detection
- Confirm no production or test validator runs v1.0_beta or v1.0.0_beta-1.
- Review deployment manifests, container tags, and build artifacts for affected version strings.
- Verify remediation against official Hyperledger Iroha release notes before closing the finding.
- Document whether any historical beta networks processed sensitive transactions.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2018-3756 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/hyperledger/iroha/releases/tag/v1.0.0_beta-2CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.