PYSEC-2017-8

    Dashboard / Vulnerabilities / PYSEC-2017-8

    PYSEC-2017-8

    Published: 27 Mar 2017Last Modified: 8 Nov 2023

    Summary:

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

    References: https://lists.fedoraproject.org/archives/list/[email protected]/message/WQ5G7KHKZC4SI23JE7277KZXM57GEQKT/, https://lists.fedoraproject.org/archives/list/[email protected]/message/U23KDR2M2N7W2ZSREG63BVW7D4VC6CIZ/, https://lists.fedoraproject.org/archives/list/[email protected]/message/5R2ZOBMPWDFFHUZ6QOZZY36A6H5CGJXL/, https://github.com/pyca/cryptography/issues/3211, https://github.com/pyca/cryptography/commit/b924696b2e8731f39696584d12cceeb3aeb2d874, https://cryptography.io/en/latest/changelog, http://www.ubuntu.com/usn/USN-3138-1, http://www.securityfocus.com/bid/94216, http://www.openwall.com/lists/oss-security/2016/11/09/2, https://github.com/advisories/GHSA-q3cj-2r34-2cwc

    Affected packages

    Package

    Name: cryptography

    Purl: pkg:pypi/cryptography

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -b924696b2e8731f39696584d12cceeb3aeb2d874

    Affected versions

    0.1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High