Vulnerability · Published Nov 18, 2021 · Assigned by mitre
CVE-2021-43667
High 7.5
In plain English
A high-severity security flaw in the github.com/hyperledger/fabric package (Go). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 71% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.3%top 28.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A vulnerability has been detected in HyperLedger Fabric v1.4.0, v2.0.0, v2.1.0. This bug can be leveraged by constructing a message whose payload is nil and sending this message with the method 'forwardToLeader'. This bug has been admitted and fixed by the developers of Fabric. If leveraged, any leader node will crash.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/hyperledger/fabric | 2.3.3 | GHSA-vjj6-5m9f-wqjw |
| Go | github.com/hyperledger/fabric | 2.2.4 | GHSA-vjj6-5m9f-wqjw |
Affected products (as reported)
References
- https://jira.hyperledger.org/browse/FAB-18529 x_refsource_MISC
- https://github.com/hyperledger/fabric/pull/2844 x_refsource_MISC