CVE-2021-3716

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Source
https://cve.org/CVERecord?id=CVE-2021-3716
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-3716.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-3716
Downstream
Related
Published
2022-03-02T23:15:09Z
Modified
2026-08-18T15:01:38Z
Severity
  • 3.1 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Summary
[none]
Details

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.

Database specific 
{
    "unresolved_ranges": [
        {
            "cpes": [
                "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*",
                "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*"
            ],
            "extracted_events": [
                {
                    "introduced": "8.0"
                },
                {
                    "last_affected": "8.0"
                },
                {
                    "introduced": "8.0"
                },
                {
                    "last_affected": "8.0"
                }
            ],
            "source": "CPE_STRING",
            "vendor_product": "redhat:enterprise_linux"
        }
    ]
}
References

Affected packages

Git / gitlab.com/nbdkit/nbdkit

Affected ranges

Type
GIT
Repo
https://gitlab.com/nbdkit/nbdkit
Events
Introduced
e04c01350cbec0084bdcdca0e35f68724a7ff957
Fixed
6d28ae47be983be20641d10058cd07f8db29ecfc
Introduced
2481e0ae01553e9329fb808ae332f8063bed1ee3
Fixed
c6a62333c8e48dbc0067e8a059df5cb8e3f01f87
Introduced
a6ca20406b4d58af636c4da642ec48d1abf9e787
Fixed
8eea35876b9829a691e596f8c22a1ae57cea6c46
Fixed
09a13dafb7bb3a38ab52eb5501cba786365ba7fd
Fixed
6c5faac6a37077cf2366388a80862bb00616d0d8
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:nbdkit_project:nbdkit:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "1.11.8"
        },
        {
            "fixed": "1.24.6"
        },
        {
            "introduced": "1.25.1"
        },
        {
            "fixed": "1.26.5"
        },
        {
            "introduced": "1.27.1"
        },
        {
            "fixed": "1.27.6"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

v1.*
v1.11.10
v1.11.11
v1.11.12
v1.11.13
v1.11.14
v1.11.15
v1.11.8
v1.11.9
v1.12.0
v1.13.0
v1.13.1
v1.13.2
v1.13.3
v1.13.4
v1.13.5
v1.13.6
v1.13.7
v1.13.8
v1.13.9
v1.14.0
v1.15.1
v1.15.2
v1.15.3
v1.15.4
v1.15.5
v1.15.6
v1.15.7
v1.15.8
v1.16.0
v1.17.1
v1.17.10
v1.17.11
v1.17.2
v1.17.3
v1.17.4
v1.17.5
v1.17.6
v1.17.7
v1.17.8
v1.17.9
v1.18.0
v1.19.1
v1.19.10
v1.19.11
v1.19.12
v1.19.2
v1.19.3
v1.19.4
v1.19.5
v1.19.6
v1.19.7
v1.19.8
v1.19.9
v1.20.0
v1.21.1
v1.21.10
v1.21.11
v1.21.12
v1.21.13
v1.21.14
v1.21.15
v1.21.16
v1.21.17
v1.21.18
v1.21.19
v1.21.2
v1.21.20
v1.21.21
v1.21.22
v1.21.23
v1.21.24
v1.21.25
v1.21.26
v1.21.3
v1.21.4
v1.21.5
v1.21.6
v1.21.7
v1.21.8
v1.21.9
v1.23.1
v1.23.10
v1.23.11
v1.23.12
v1.23.13
v1.23.2
v1.23.3
v1.23.4
v1.23.5
v1.23.6
v1.23.7
v1.23.8
v1.23.9
v1.24.0
v1.24.1
v1.24.2
v1.24.3
v1.24.4
v1.24.5
v1.25.1
v1.25.2
v1.25.3
v1.25.4
v1.25.5
v1.25.6
v1.25.7
v1.25.8
v1.25.9
v1.26.0
v1.26.1
v1.26.2
v1.26.3
v1.26.4
v1.27.1
v1.27.2
v1.27.3
v1.27.4
v1.27.5
v1.27.6
v1.27.7

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-3716.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "17736055569549823576078601167558441071",
                "252569956524523289579052347941166243611",
                "297470718666234456831894338929195417055"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2021-3716-07c259cd",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://gitlab.com/nbdkit/nbdkit@09a13dafb7bb3a38ab52eb5501cba786365ba7fd",
        "target": {
            "file": "server/protocol-handshake-newstyle.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "278656485481587851966178619826305884851",
            "length": 9714
        },
        "id": "CVE-2021-3716-72881b3f",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://gitlab.com/nbdkit/nbdkit@09a13dafb7bb3a38ab52eb5501cba786365ba7fd",
        "target": {
            "file": "server/protocol-handshake-newstyle.c",
            "function": "negotiate_handshake_newstyle_options"
        }
    }
]
vanir_signatures_modified 
"2026-08-18T15:01:38Z"