Fedora 27 : python-cryptography / python-cryptography-vectors (2018-06c24068c6)

High Nessus Plugin ID 111469


The remote Fedora host is missing one or more security updates.


# New upstream release 2.3

Fixes possible tag truncation security bug in AEAD API, see RHBZ#1602752

## 2.3 - 2018-07-18

- SECURITY ISSUE: finalize_with_tag() allowed tag truncation by default which can allow tag forgery in some cases. The method now enforces the min_tag_length provided to the GCM constructor.

- Added support for Python 3.7.

- Added extract_timestamp() to get the authenticated timestamp of a Fernet token.

- Support for Python 2.7.x without hmac.compare_digest has been deprecated. We will require Python 2.7.7 or higher (or 2.7.6 on Ubuntu) in the next cryptography release.

- Fixed multiple issues preventing cryptography from compiling against LibreSSL 2.7.x.

- Added get_revoked_certificate_by_serial_number for quick serial number searches in CRLs.

- The RelativeDistinguishedName class now preserves the order of attributes. Duplicate attributes now raise an error instead of silently discarding duplicates.

- aes_key_unwrap() and aes_key_unwrap_with_padding() now raise InvalidUnwrap if the wrapped key is an invalid length, instead of ValueError.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Update the affected python-cryptography and / or python-cryptography-vectors packages.

See Also


Plugin Details

Severity: High

ID: 111469

File Name: fedora_2018-06c24068c6.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2018/08/02

Modified: 2018/08/02

Dependencies: 12634

Risk Information

Risk Factor: High

Vulnerability Information

CPE: p-cpe:/a:fedoraproject:fedora:python-cryptography, p-cpe:/a:fedoraproject:fedora:python-cryptography-vectors, cpe:/o:fedoraproject:fedora:27

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Patch Publication Date: 2018/07/31

Reference Information