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AUSCERT External Security Bulletin Redistribution
ESB-2021.1198
nettle security update
9 April 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: nettle
Publisher: Red Hat
Operating System: Red Hat
Linux variants
Impact/Access: Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-20305
Original Bulletin:
https://access.redhat.com/errata/RHSA-2021:1145
Comment: This advisory references vulnerabilities in products which run on
platforms other than Red Hat. It is recommended that administrators
running nettle check for an updated version of the software for
their operating system.
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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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