CVE-2021-3716 - CVE House
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Status published Low CVE-2021-3716

A flaw was found in nbdkit due to to improperly...

Vulnerability Description

A flaw was found in nbdkit due to to improperly caching plaintext state across the STARTTLS encryption boundary. A MitM attacker could use this flaw to inject a plaintext NBD_OPT_STRUCTURED_REPLY before proxying everything else a client sends to the server, potentially leading the client to terminate the NBD session. The highest threat from this vulnerability is to system availability.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

nbdkit
Vulnerable Versions:
Affects nbdkit v1.12 through v1.26.4 | Fixedin nbdkit v1.26.5

Timeline

Official Publish: March 2nd, 2022
Last Modified: August 3rd, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

Weaknesses (CWE)

CWE-924

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.