CVE-2016-9243

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Source
https://cve.org/CVERecord?id=CVE-2016-9243
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2016-9243.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2016-9243
Aliases
Downstream
Published
2017-03-27T17:59:00.460Z
Modified
2026-05-13T12:00:37.128119262Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
[none]
Details

HKDF in cryptography before 1.5.2 returns an empty byte-string if used with a length less than algorithm.digest_size.

Database specific 
{
    "unresolved_ranges": [
        {
            "source": "CPE_FIELD",
            "cpe": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
            "extracted_events": [
                {
                    "last_affected": "16.04"
                }
            ]
        },
        {
            "source": "CPE_FIELD",
            "extracted_events": [
                {
                    "last_affected": "16.10"
                }
            ],
            "cpe": "cpe:2.3:o:canonical:ubuntu_linux:16.10:*:*:*:*:*:*:*"
        },
        {
            "source": "CPE_FIELD",
            "extracted_events": [
                {
                    "last_affected": "23"
                }
            ],
            "cpe": "cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*"
        },
        {
            "source": "CPE_FIELD",
            "cpe": "cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:*",
            "extracted_events": [
                {
                    "last_affected": "24"
                }
            ]
        },
        {
            "source": "CPE_FIELD",
            "cpe": "cpe:2.3:o:fedoraproject:fedora:25:*:*:*:*:*:*:*",
            "extracted_events": [
                {
                    "last_affected": "25"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/pyca/cryptography

Affected ranges

Type
GIT
Repo
https://github.com/pyca/cryptography
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
cad77746539f504d53eb1bf9b278ec081ab8040a
Database specific 
{
    "source": "CPE_FIELD",
    "cpe": "cpe:2.3:a:cryptography.io:cryptography:*:*:*:*:*:python:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.5.2"
        }
    ]
}

Affected versions

0.*
0.1
0.2
0.3
0.4
0.5
0.5.1
0.6
0.7
0.8
0.9
1.*
1.0
1.1
1.2
1.3
1.4
1.5
1.5.1
1.5.2

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2016-9243.json"