Description
HKDF in cryptography before 1.5.2 returns an empty byte-string if used with a length less than algorithm.digest_size.
Published: 2017-03-27
Score: 7.5 High
EPSS: 1.7% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
EUVD EUVD EUVD-2017-0020 HKDF in cryptography before 1.5.2 returns an empty byte-string if used with a length less than algorithm.digest_size.
Github GHSA Github GHSA GHSA-q3cj-2r34-2cwc Improper input validation in cryptography
Ubuntu USN Ubuntu USN USN-3138-1 python-cryptography vulnerability
History

Mon, 09 Sep 2024 14:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20 NVD-CWE-noinfo
CPEs cpe:2.3:a:cryptography.io:cryptography:*:*:*:*:*:*:*:* cpe:2.3:a:cryptography.io:cryptography:*:*:*:*:*:python:*:*
Metrics cvssV3_0

{'score': 7.5, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

cvssV3_0

{'score': 4.8, 'vector': 'CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'}


Subscriptions

Canonical Ubuntu Linux
Cryptography.io Cryptography
Fedoraproject Fedora
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-06T02:42:11.253Z

Reserved: 2016-11-09T00:00:00.000Z

Link: CVE-2016-9243

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2017-03-27T17:59:00.460

Modified: 2026-05-13T00:24:29.033

Link: CVE-2016-9243

cve-icon Redhat

Severity : Low

Publid Date: 2016-11-05T00:00:00Z

Links: CVE-2016-9243 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses