You are here
Home > Preporuke > Sigurnosni nedostatak programskog paketa python-cryptography

Sigurnosni nedostatak programskog paketa python-cryptography

  • Detalji os-a: WN7
  • Važnost: IMP
  • Operativni sustavi: L
  • Kategorije: LFE

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

Name : python-cryptography
Product : Fedora 27
Version : 2.3
Release : 1.fc27
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 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

* Wed Jul 18 2018 Christian Heimes <> – 2.3-1
– New upstream release 2.3
– Fix AEAD tag truncation bug, RHBZ#1602752
* Sun Feb 18 2018 Christian Heimes <> – 2.0.2-4
– Build requires gcc
* Tue Oct 24 2017 Christian Heimes <> – 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

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
package-announce mailing list —
To unsubscribe send an email to
Fedora Code of Conduct:
List Guidelines:
List Archives:

AutorDanijel Kozinovic
Cert idNCERT-REF-2018-08-0001-ADV
More in Preporuke
Sigurnosni nedostatak programskog paketa poppler

Otkriven je sigurnosni nedostatak u programskom paketu poppler za operacijski sustav Fedora. Otkriveni nedostatak potencijalnim napadačima omogućuje otkrivanje izvršavanje proizvoljnog...