CVE-2020-36254

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Source
https://cve.org/CVERecord?id=CVE-2020-36254
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-36254.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2020-36254
Downstream
Published
2021-02-25T09:15:13.037Z
Modified
2026-07-08T20:30:51.885766Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

scp.c in Dropbear before 2020.79 mishandles the filename of . or an empty filename, a related issue to CVE-2018-20685.

References

Affected packages

Git / github.com/mkj/dropbear

Affected ranges

Type
GIT
Repo
https://github.com/mkj/dropbear
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
1e10af850ba6e0c3a9af1382ed0f33981d2754ec
Fixed
8f8a3dff705fad774a10864a2e3dbcfa9779ceff
Database specific 
{
    "cpe": "cpe:2.3:a:dropbear_ssh_project:dropbear_ssh:*:*:*:*:*:*:*:*",
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2020.79"
        }
    ]
}

Affected versions

DROPBEAR_0.*
DROPBEAR_0.48
DROPBEAR_0.49
DROPBEAR_0.50
DROPBEAR_0.51
DROPBEAR_0.53
DROPBEAR_0.53.1
DROPBEAR_2011.*
DROPBEAR_2011.54
DROPBEAR_2012.*
DROPBEAR_2012.55
DROPBEAR_2013.*
DROPBEAR_2013.56
DROPBEAR_2013.57
DROPBEAR_2013.58
DROPBEAR_2013.59
DROPBEAR_2013.60
DROPBEAR_2013.61test
DROPBEAR_2013.62
DROPBEAR_2014.*
DROPBEAR_2014.63
DROPBEAR_2014.64
DROPBEAR_2014.65
DROPBEAR_2014.66
DROPBEAR_2015.*
DROPBEAR_2015.67
DROPBEAR_2015.68
DROPBEAR_2015.69
DROPBEAR_2015.70
DROPBEAR_2015.71
DROPBEAR_2016.*
DROPBEAR_2016.73
DROPBEAR_2016.74
DROPBEAR_2017.*
DROPBEAR_2017.75
DROPBEAR_2018.*
DROPBEAR_2018.76
DROPBEAR_2019.*
DROPBEAR_2019.77
DROPBEAR_2019.78
libtomcrypt-1.*
libtomcrypt-1.05

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-36254.json"
vanir_signatures_modified 
"2026-07-08T20:30:51Z"
vanir_signatures 
[
    {
        "signature_version": "v1",
        "source": "https://github.com/mkj/dropbear/commit/8f8a3dff705fad774a10864a2e3dbcfa9779ceff",
        "id": "CVE-2020-36254-6b4e4aee",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "237605168131558559297836982470952548709",
                "9918060269501218287803774112349406154",
                "254210735453032564243385078505601071235",
                "223618394384082972896881724008970952628"
            ]
        },
        "target": {
            "file": "scp.c"
        },
        "deprecated": false,
        "signature_type": "Line"
    },
    {
        "signature_version": "v1",
        "source": "https://github.com/mkj/dropbear/commit/8f8a3dff705fad774a10864a2e3dbcfa9779ceff",
        "id": "CVE-2020-36254-b4c99c49",
        "digest": {
            "length": 6041.0,
            "function_hash": "298365816134113397236732700876039872175"
        },
        "target": {
            "function": "sink",
            "file": "scp.c"
        },
        "deprecated": false,
        "signature_type": "Function"
    }
]