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CVE Record

CVE-2022-31121: Improper Input Validation in fabric hyperledger

Hyperledger Fabric is a permissioned distributed ledger framework. In affected versions if a consensus client sends a malformed consensus request to an orderer it may crash the orderer node. A fix has been added in commit 0f1835949 which checks for missing consensus messages and returns an error to the consensus client should the message be missing. Users are advised to upgrade to versions 2.2.7 or v2.4.5. There are no known workarounds for this issue.

HighCVSS 7.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A malformed consensus request can crash a Hyperledger Fabric orderer node, disrupting blockchain ordering service availability. This is primarily an operational continuity risk for organizations running affected Fabric versions, not a confidentiality or integrity issue based on the provided CVSS data.

Executive priority

Prioritize remediation for any production Fabric network using affected versions, especially where orderer downtime would interrupt transaction ordering or business workflows. This is a high availability risk with a named vendor fix and no known workaround.

Technical view

CVE-2022-31121 is improper input validation in Hyperledger Fabric. A consensus client can send a malformed consensus request with a missing consensus message, causing an orderer crash. The fix checks for missing consensus messages and returns an error instead.

Likely exposure

Exposure is limited to Hyperledger Fabric deployments running versions below 2.2.7 or versions 2.3.0 through below 2.4.5. Organizations operating orderer nodes in those versions should treat them as affected.

Exploitation context

The source bundle does not show CISA KEV listing or active exploitation. CVSS indicates network reachability, low complexity, no privileges, and high availability impact. The practical risk is denial of service against orderer availability.

Researcher notes

The evidence supports an availability-only denial-of-service issue in Fabric orderer consensus request handling. The source bundle identifies the fixing commit and fixed releases but does not provide evidence of exploitation in the wild.

Mitigation direction

  • Upgrade Hyperledger Fabric 2.2 deployments to version 2.2.7 or later.
  • Upgrade Fabric 2.3 or 2.4 deployments to version 2.4.5 or later.
  • Do not rely on a workaround; the advisory states none are known.
  • Review vendor release notes before production rollout.
  • Prioritize orderer nodes and dependent operational runbooks.

Validation and detection

  • Inventory all Hyperledger Fabric orderer node versions.
  • Confirm no orderer node runs below 2.2.7 or 2.4.5 in affected branches.
  • Check package manifests, container tags, and deployed binaries.
  • Review orderer logs for unexplained crashes or restarts.
  • Validate upgrade completion across every ordering service node.
Prepared
Confidence
high
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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

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cwe · low confidence lookup

CWE-20: Exact CWE lookup

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cve · low confidence lookup

CVE-2022-31121 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
5Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.5CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

7.5High
CVSS 3.1 vector shape for CVE-2022-31121Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
hyperledgerfabric< 2.2.7, >= 2.3.0, < 2.4.5Listed
Weakness

CWE details

CWE-20

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.