7.5

CVE-2021-43667: linuxfoundation fabric NULL Pointer Dereference

CVSS: 7.5v3.1HighModified
AliasesGHSA-vjj6-5m9f-wqjw
Published 18-11-2021Last modified 04-08-2024
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Vulnerability summary

CVE-2021-43667 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in linuxfoundation fabric. EPSS estimates a 1.34% chance of exploitation in the next 30 days, higher than 70.7% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.34%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 18-11-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.34%

Chance of exploitation in the next 30 days

Percentile

71%

Versus all other CVEs

30-day change

0.00 pp

From 1.34% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.34%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (jira.hyperledger.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Github.com/hyperledger1 product
  • fabric≥ 2.3.0, < 2.3.3 | < 2.2.4
Linuxfoundation1 product

2 vendors · 2 products

References

4 links