CVE-2021-3716

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-3716
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3716.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-3716
Downstream
Related
Published
2022-03-02T23:15:09Z
Modified
2025-10-21T06:27:56.439071Z
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 NBDOPTSTRUCTURED_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.

References

Affected packages

Git / gitlab.com/nbdkit/nbdkit

Affected ranges

Type
GIT
Repo
https://gitlab.com/nbdkit/nbdkit
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
09a13dafb7bb3a38ab52eb5501cba786365ba7fd
Fixed
6c5faac6a37077cf2366388a80862bb00616d0d8

Affected versions

1.*

1.1.11

v0.*

v0.1.0

v1.*

v1.0.0
v1.1.1
v1.1.10
v1.1.11
v1.1.12
v1.1.13
v1.1.14
v1.1.15
v1.1.16
v1.1.17
v1.1.18
v1.1.19
v1.1.2
v1.1.20
v1.1.21
v1.1.22
v1.1.23
v1.1.24
v1.1.25
v1.1.26
v1.1.27
v1.1.28
v1.1.3
v1.1.4
v1.1.5
v1.1.6
v1.1.7
v1.1.8
v1.1.9
v1.10.0
v1.11.1
v1.11.10
v1.11.11
v1.11.12
v1.11.13
v1.11.14
v1.11.15
v1.11.2
v1.11.3
v1.11.4
v1.11.5
v1.11.6
v1.11.7
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
v1.25.1
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
v1.27.1
v1.27.2
v1.27.3
v1.27.4
v1.27.5
v1.3.0
v1.3.1
v1.3.2
v1.3.3
v1.3.4
v1.4.0
v1.5.0
v1.5.1
v1.5.10
v1.5.2
v1.5.3
v1.5.4
v1.5.5
v1.5.6
v1.5.7
v1.5.8
v1.5.9
v1.6.0
v1.7.0
v1.7.1
v1.7.10
v1.7.2
v1.7.3
v1.7.4
v1.7.5
v1.7.6
v1.7.7
v1.7.8
v1.7.9
v1.8.0
v1.9.0
v1.9.1
v1.9.10
v1.9.2
v1.9.3
v1.9.4
v1.9.5
v1.9.6
v1.9.7
v1.9.8
v1.9.9

Database specific

vanir_signatures

[
    {
        "id": "CVE-2021-3716-07c259cd",
        "signature_version": "v1",
        "source": "https://gitlab.com/nbdkit/nbdkit@09a13dafb7bb3a38ab52eb5501cba786365ba7fd",
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "17736055569549823576078601167558441071",
                "252569956524523289579052347941166243611",
                "297470718666234456831894338929195417055"
            ]
        },
        "deprecated": false,
        "target": {
            "file": "server/protocol-handshake-newstyle.c"
        }
    },
    {
        "id": "CVE-2021-3716-72881b3f",
        "signature_version": "v1",
        "source": "https://gitlab.com/nbdkit/nbdkit@09a13dafb7bb3a38ab52eb5501cba786365ba7fd",
        "signature_type": "Function",
        "digest": {
            "function_hash": "278656485481587851966178619826305884851",
            "length": 9714.0
        },
        "deprecated": false,
        "target": {
            "function": "negotiate_handshake_newstyle_options",
            "file": "server/protocol-handshake-newstyle.c"
        }
    }
]