Improper input validation in cryptography · CVE-2016-9243 · GitHub Advisory Database · GitHub

Improper input validation in cryptography

High severity GitHub Reviewed Published May 17, 2022 to the GitHub Advisory Database • Updated Jan 27, 2023

Package

cryptography (pip)

Affected versions

< 1.5.3

Patched versions

1.5.3

Description

HKDF in cryptography before 1.5.3 returns an empty byte-string if used with a length less than algorithm.digest_size.

References

Published by the National Vulnerability Database

Mar 27, 2017

Published to the GitHub Advisory Database May 17, 2022

Reviewed Jun 17, 2022

Last updated Jan 27, 2023

Severity

High

7.5

/ 10

CVSS base metrics

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N