What is CVE-2021-43669?

CVE-2021-43669 is a high-severity vulnerability in Linuxfoundation Fabric, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 7.5/10. Published 2021-11-18.

How severe is CVE-2021-43669?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Linuxfoundation Fabric

CVE-2021-43669

A vulnerability has been detected in HyperLedger Fabric v1.4.0, v2.0.0, v2.0.1, v2.3.0. It can easily break down as many orderers as the attacker wants. This bug can be leveraged by constructing a message whose header is invalid to the interface Order. This bug has been admitted and fixed by the developers of Fabric.

Vulnerability class: HTTP Request Smuggling

EPSS: 0.011 (62.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linuxfoundation Fabric — versions 1.4.0, 2.0.0, 2.0.1
N/a — versions n/a

Weakness classification (CWE)

CWE-444 — Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling)

References

cve@mitre.org (x_refsource_MISC, Vendor Advisory)
cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-43669?: CVE-2021-43669 is a high-severity vulnerability in Linuxfoundation Fabric, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 7.5/10. Published 2021-11-18.
How severe is CVE-2021-43669?: High severity. CVSS v3 base score is 7.5 out of 10.