Sicherheit: Mangelnde Eingabeprüfung in python-cryptography
Aktuelle Meldungen Distributionen
Name: Mangelnde Eingabeprüfung in python-cryptography
ID: FEDORA-2018-06c24068c6
Distribution: Fedora
Plattformen: Fedora 27
Datum: Di, 31. Juli 2018, 22:32
Referenzen: https://bugzilla.redhat.com/show_bug.cgi?id=1602752
Applikationen: python-cryptography


Fedora Update Notification
2018-07-31 17:09:33.504512

Name : python-cryptography
Product : Fedora 27
Version : 2.3
Release : 1.fc27
URL : https://cryptography.io/en/latest/
Summary : PyCA's cryptography library
Description :
cryptography is a package designed to expose cryptographic primitives and
recipes to Python developers.

Update Information:

# 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
to get the authenticated timestamp of a Fernet token. * Support for Python
without hmac.compare_digest has been deprecated. We will require Python 2.7.7
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

* Wed Jul 18 2018 Christian Heimes <cheimes@redhat.com> - 2.3-1
- New upstream release 2.3
- Fix AEAD tag truncation bug, RHBZ#1602752
* Sun Feb 18 2018 Christian Heimes <cheimes@redhat.com> - 2.0.2-4
- Build requires gcc
* Tue Oct 24 2017 Christian Heimes <cheimes@redhat.com> - 2.0.2-3
- Change Requires to openssl-libs

[ 1 ] Bug #1602752 - Possible tag truncation security bug in AEAD API

This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2018-06c24068c6' at the command
line. For more information, refer to the dnf documentation available at

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