exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

Red Hat Security Advisory 2021-1608-01

Red Hat Security Advisory 2021-1608-01
Posted May 19, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-1608-01 - The python-cryptography packages contain a Python Cryptographic Authority's cryptography library, which provides cryptographic primitives and recipes to Python developers. Issues addressed include buffer overflow and integer overflow vulnerabilities.

tags | advisory, overflow, vulnerability, python
systems | linux, redhat
advisories | CVE-2020-25659, CVE-2020-36242
SHA-256 | 7a1a17092783aff67854e96b1fa4c6a032f529cb2af1fb7c38fa76d4c84abd8f

Red Hat Security Advisory 2021-1608-01

Change Mirror Download
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

====================================================================
Red Hat Security Advisory

Synopsis: Moderate: python-cryptography security, bug fix, and enhancement update
Advisory ID: RHSA-2021:1608-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:1608
Issue date: 2021-05-18
CVE Names: CVE-2020-25659 CVE-2020-36242
====================================================================
1. Summary:

An update for python-cryptography is now available for Red Hat Enterprise
Linux 8.

Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, ppc64le, s390x, x86_64

3. Description:

The python-cryptography packages contain a Python Cryptographic Authority's
(PyCA's) cryptography library, which provides cryptographic primitives and
recipes to Python developers.

The following packages have been upgraded to a later upstream version:
python-cryptography (3.2.1). (BZ#1873581, BZ#1891947)

Security Fix(es):

* python-cryptography: bleichenbacher timing oracle attack against RSA
decryption (CVE-2020-25659)

* python-cryptography: certain sequences of update() calls when
symmetrically encrypting very large payloads could result in an integer
overflow and lead to buffer overflows (CVE-2020-36242)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 8.4 Release Notes linked from the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1778939 - internal pyca error with X25519, FIPS
1873581 - Rebase python-cryptography to 2.6+ for ed25519 support
1889988 - CVE-2020-25659 python-cryptography: bleichenbacher timing oracle attack against RSA decryption
1891947 - Rebase internal component python-cryptography-vectors
1907429 - Re-add NPN bindings for PyOpenSSL
1926226 - CVE-2020-36242 python-cryptography: certain sequences of update() calls when symmetrically encrypting very large payloads could result in an integer overflow and lead to buffer overflows

6. Package List:

Red Hat Enterprise Linux BaseOS (v. 8):

Source:
python-cryptography-3.2.1-4.el8.src.rpm

aarch64:
python-cryptography-debugsource-3.2.1-4.el8.aarch64.rpm
python3-cryptography-3.2.1-4.el8.aarch64.rpm
python3-cryptography-debuginfo-3.2.1-4.el8.aarch64.rpm

ppc64le:
python-cryptography-debugsource-3.2.1-4.el8.ppc64le.rpm
python3-cryptography-3.2.1-4.el8.ppc64le.rpm
python3-cryptography-debuginfo-3.2.1-4.el8.ppc64le.rpm

s390x:
python-cryptography-debugsource-3.2.1-4.el8.s390x.rpm
python3-cryptography-3.2.1-4.el8.s390x.rpm
python3-cryptography-debuginfo-3.2.1-4.el8.s390x.rpm

x86_64:
python-cryptography-debugsource-3.2.1-4.el8.x86_64.rpm
python3-cryptography-3.2.1-4.el8.x86_64.rpm
python3-cryptography-debuginfo-3.2.1-4.el8.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2020-25659
https://access.redhat.com/security/cve/CVE-2020-36242
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.4_release_notes/

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2021 Red Hat, Inc.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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IPXV
-----END PGP SIGNATURE-----

--
RHSA-announce mailing list
RHSA-announce@redhat.com
https://listman.redhat.com/mailman/listinfo/rhsa-announce
Login or Register to add favorites

File Archive:

March 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Mar 1st
    16 Files
  • 2
    Mar 2nd
    0 Files
  • 3
    Mar 3rd
    0 Files
  • 4
    Mar 4th
    32 Files
  • 5
    Mar 5th
    28 Files
  • 6
    Mar 6th
    42 Files
  • 7
    Mar 7th
    17 Files
  • 8
    Mar 8th
    13 Files
  • 9
    Mar 9th
    0 Files
  • 10
    Mar 10th
    0 Files
  • 11
    Mar 11th
    15 Files
  • 12
    Mar 12th
    19 Files
  • 13
    Mar 13th
    21 Files
  • 14
    Mar 14th
    38 Files
  • 15
    Mar 15th
    15 Files
  • 16
    Mar 16th
    0 Files
  • 17
    Mar 17th
    0 Files
  • 18
    Mar 18th
    10 Files
  • 19
    Mar 19th
    32 Files
  • 20
    Mar 20th
    46 Files
  • 21
    Mar 21st
    16 Files
  • 22
    Mar 22nd
    13 Files
  • 23
    Mar 23rd
    0 Files
  • 24
    Mar 24th
    0 Files
  • 25
    Mar 25th
    12 Files
  • 26
    Mar 26th
    31 Files
  • 27
    Mar 27th
    19 Files
  • 28
    Mar 28th
    42 Files
  • 29
    Mar 29th
    0 Files
  • 30
    Mar 30th
    0 Files
  • 31
    Mar 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close