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Red Hat Security Advisory 2021-1145-01

Red Hat Security Advisory 2021-1145-01
Posted Apr 9, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-1145-01 - Nettle is a cryptographic library that is designed to fit easily in almost any context: In crypto toolkits for object-oriented languages, such as C++, Python, or Pike, in applications like LSH or GNUPG, or even in kernel space.

tags | advisory, kernel, crypto, python
systems | linux, redhat
advisories | CVE-2021-20305
SHA-256 | c64e53f209824c0541aa87a7b3d247fd85ddd3bfb744137d79b41874b72f64e3

Red Hat Security Advisory 2021-1145-01

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

Synopsis: Important: nettle security update
Advisory ID: RHSA-2021:1145-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:1145
Issue date: 2021-04-08
CVE Names: CVE-2021-20305
====================================================================
1. Summary:

An update for nettle is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Important. 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 Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64

3. Description:

Nettle is a cryptographic library that is designed to fit easily in almost
any context: In crypto toolkits for object-oriented languages, such as C++,
Python, or Pike, in applications like LSH or GNUPG, or even in kernel
space.

Security Fix(es):

* nettle: Out of bounds memory access in signature verification
(CVE-2021-20305)

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.

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/):

1942533 - CVE-2021-20305 nettle: Out of bounds memory access in signature verification

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
nettle-2.7.1-9.el7_9.src.rpm

x86_64:
nettle-2.7.1-9.el7_9.i686.rpm
nettle-2.7.1-9.el7_9.x86_64.rpm
nettle-debuginfo-2.7.1-9.el7_9.i686.rpm
nettle-debuginfo-2.7.1-9.el7_9.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

x86_64:
nettle-debuginfo-2.7.1-9.el7_9.i686.rpm
nettle-debuginfo-2.7.1-9.el7_9.x86_64.rpm
nettle-devel-2.7.1-9.el7_9.i686.rpm
nettle-devel-2.7.1-9.el7_9.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
nettle-2.7.1-9.el7_9.src.rpm

x86_64:
nettle-2.7.1-9.el7_9.i686.rpm
nettle-2.7.1-9.el7_9.x86_64.rpm
nettle-debuginfo-2.7.1-9.el7_9.i686.rpm
nettle-debuginfo-2.7.1-9.el7_9.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

x86_64:
nettle-debuginfo-2.7.1-9.el7_9.i686.rpm
nettle-debuginfo-2.7.1-9.el7_9.x86_64.rpm
nettle-devel-2.7.1-9.el7_9.i686.rpm
nettle-devel-2.7.1-9.el7_9.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
nettle-2.7.1-9.el7_9.src.rpm

ppc64:
nettle-2.7.1-9.el7_9.ppc.rpm
nettle-2.7.1-9.el7_9.ppc64.rpm
nettle-debuginfo-2.7.1-9.el7_9.ppc.rpm
nettle-debuginfo-2.7.1-9.el7_9.ppc64.rpm
nettle-devel-2.7.1-9.el7_9.ppc.rpm
nettle-devel-2.7.1-9.el7_9.ppc64.rpm

ppc64le:
nettle-2.7.1-9.el7_9.ppc64le.rpm
nettle-debuginfo-2.7.1-9.el7_9.ppc64le.rpm
nettle-devel-2.7.1-9.el7_9.ppc64le.rpm

s390x:
nettle-2.7.1-9.el7_9.s390.rpm
nettle-2.7.1-9.el7_9.s390x.rpm
nettle-debuginfo-2.7.1-9.el7_9.s390.rpm
nettle-debuginfo-2.7.1-9.el7_9.s390x.rpm
nettle-devel-2.7.1-9.el7_9.s390.rpm
nettle-devel-2.7.1-9.el7_9.s390x.rpm

x86_64:
nettle-2.7.1-9.el7_9.i686.rpm
nettle-2.7.1-9.el7_9.x86_64.rpm
nettle-debuginfo-2.7.1-9.el7_9.i686.rpm
nettle-debuginfo-2.7.1-9.el7_9.x86_64.rpm
nettle-devel-2.7.1-9.el7_9.i686.rpm
nettle-devel-2.7.1-9.el7_9.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
nettle-2.7.1-9.el7_9.src.rpm

x86_64:
nettle-2.7.1-9.el7_9.i686.rpm
nettle-2.7.1-9.el7_9.x86_64.rpm
nettle-debuginfo-2.7.1-9.el7_9.i686.rpm
nettle-debuginfo-2.7.1-9.el7_9.x86_64.rpm
nettle-devel-2.7.1-9.el7_9.i686.rpm
nettle-devel-2.7.1-9.el7_9.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-2021-20305
https://access.redhat.com/security/updates/classification/#important

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.
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