VULNERABILITY INTELLIGENCE

CVE-2021-3716

CVSS score3.1 LOW
EPSS probability0.58%
CISA KEVNot currently listed
Published2022-03-02
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

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.

Weakness classification

  • secalert@redhat.com: CWE-924
  • nvd@nist.gov: NVD-CWE-Other

Primary references