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=====================================================================
Red Hat Security Advisory
Synopsis: Important: gnutls and nettle security update
Advisory ID: RHSA-2021:1246-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:1246
Issue date: 2021-04-19
CVE Names: CVE-2021-20305
=====================================================================
1. Summary:
An update for gnutls and nettle is now available for Red Hat Enterprise
Linux 8.2 Extended Update Support.
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 AppStream EUS (v. 8.2) - aarch64, ppc64le, s390x,
x86_64
Red Hat Enterprise Linux BaseOS EUS (v. 8.2) - aarch64, ppc64le, s390x, x86_64
3. Description:
The gnutls packages provide the GNU Transport Layer Security (GnuTLS)
library, which implements cryptographic algorithms and protocols such as
SSL, TLS, and DTLS.
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 AppStream EUS (v. 8.2):
aarch64:
gnutls-c++-3.6.8-12.el8_2.aarch64.rpm
gnutls-c++-debuginfo-3.6.8-12.el8_2.aarch64.rpm
gnutls-dane-3.6.8-12.el8_2.aarch64.rpm
gnutls-dane-debuginfo-3.6.8-12.el8_2.aarch64.rpm
gnutls-debuginfo-3.6.8-12.el8_2.aarch64.rpm
gnutls-debugsource-3.6.8-12.el8_2.aarch64.rpm
gnutls-devel-3.6.8-12.el8_2.aarch64.rpm
gnutls-utils-3.6.8-12.el8_2.aarch64.rpm
gnutls-utils-debuginfo-3.6.8-12.el8_2.aarch64.rpm
nettle-debuginfo-3.4.1-2.el8_2.aarch64.rpm
nettle-debugsource-3.4.1-2.el8_2.aarch64.rpm
nettle-devel-3.4.1-2.el8_2.aarch64.rpm
ppc64le:
gnutls-c++-3.6.8-12.el8_2.ppc64le.rpm
gnutls-c++-debuginfo-3.6.8-12.el8_2.ppc64le.rpm
gnutls-dane-3.6.8-12.el8_2.ppc64le.rpm
gnutls-dane-debuginfo-3.6.8-12.el8_2.ppc64le.rpm
gnutls-debuginfo-3.6.8-12.el8_2.ppc64le.rpm
gnutls-debugsource-3.6.8-12.el8_2.ppc64le.rpm
gnutls-devel-3.6.8-12.el8_2.ppc64le.rpm
gnutls-utils-3.6.8-12.el8_2.ppc64le.rpm
gnutls-utils-debuginfo-3.6.8-12.el8_2.ppc64le.rpm
nettle-debuginfo-3.4.1-2.el8_2.ppc64le.rpm
nettle-debugsource-3.4.1-2.el8_2.ppc64le.rpm
nettle-devel-3.4.1-2.el8_2.ppc64le.rpm
s390x:
gnutls-c++-3.6.8-12.el8_2.s390x.rpm
gnutls-c++-debuginfo-3.6.8-12.el8_2.s390x.rpm
gnutls-dane-3.6.8-12.el8_2.s390x.rpm
gnutls-dane-debuginfo-3.6.8-12.el8_2.s390x.rpm
gnutls-debuginfo-3.6.8-12.el8_2.s390x.rpm
gnutls-debugsource-3.6.8-12.el8_2.s390x.rpm
gnutls-devel-3.6.8-12.el8_2.s390x.rpm
gnutls-utils-3.6.8-12.el8_2.s390x.rpm
gnutls-utils-debuginfo-3.6.8-12.el8_2.s390x.rpm
nettle-debuginfo-3.4.1-2.el8_2.s390x.rpm
nettle-debugsource-3.4.1-2.el8_2.s390x.rpm
nettle-devel-3.4.1-2.el8_2.s390x.rpm
x86_64:
gnutls-c++-3.6.8-12.el8_2.i686.rpm
gnutls-c++-3.6.8-12.el8_2.x86_64.rpm
gnutls-c++-debuginfo-3.6.8-12.el8_2.i686.rpm
gnutls-c++-debuginfo-3.6.8-12.el8_2.x86_64.rpm
gnutls-dane-3.6.8-12.el8_2.i686.rpm
gnutls-dane-3.6.8-12.el8_2.x86_64.rpm
gnutls-dane-debuginfo-3.6.8-12.el8_2.i686.rpm
gnutls-dane-debuginfo-3.6.8-12.el8_2.x86_64.rpm
gnutls-debuginfo-3.6.8-12.el8_2.i686.rpm
gnutls-debuginfo-3.6.8-12.el8_2.x86_64.rpm
gnutls-debugsource-3.6.8-12.el8_2.i686.rpm
gnutls-debugsource-3.6.8-12.el8_2.x86_64.rpm
gnutls-devel-3.6.8-12.el8_2.i686.rpm
gnutls-devel-3.6.8-12.el8_2.x86_64.rpm
gnutls-utils-3.6.8-12.el8_2.x86_64.rpm
gnutls-utils-debuginfo-3.6.8-12.el8_2.i686.rpm
gnutls-utils-debuginfo-3.6.8-12.el8_2.x86_64.rpm
nettle-debuginfo-3.4.1-2.el8_2.i686.rpm
nettle-debuginfo-3.4.1-2.el8_2.x86_64.rpm
nettle-debugsource-3.4.1-2.el8_2.i686.rpm
nettle-debugsource-3.4.1-2.el8_2.x86_64.rpm
nettle-devel-3.4.1-2.el8_2.i686.rpm
nettle-devel-3.4.1-2.el8_2.x86_64.rpm
Red Hat Enterprise Linux BaseOS EUS (v. 8.2):
Source:
gnutls-3.6.8-12.el8_2.src.rpm
nettle-3.4.1-2.el8_2.src.rpm
aarch64:
gnutls-3.6.8-12.el8_2.aarch64.rpm
gnutls-c++-debuginfo-3.6.8-12.el8_2.aarch64.rpm
gnutls-dane-debuginfo-3.6.8-12.el8_2.aarch64.rpm
gnutls-debuginfo-3.6.8-12.el8_2.aarch64.rpm
gnutls-debugsource-3.6.8-12.el8_2.aarch64.rpm
gnutls-utils-debuginfo-3.6.8-12.el8_2.aarch64.rpm
nettle-3.4.1-2.el8_2.aarch64.rpm
nettle-debuginfo-3.4.1-2.el8_2.aarch64.rpm
nettle-debugsource-3.4.1-2.el8_2.aarch64.rpm
ppc64le:
gnutls-3.6.8-12.el8_2.ppc64le.rpm
gnutls-c++-debuginfo-3.6.8-12.el8_2.ppc64le.rpm
gnutls-dane-debuginfo-3.6.8-12.el8_2.ppc64le.rpm
gnutls-debuginfo-3.6.8-12.el8_2.ppc64le.rpm
gnutls-debugsource-3.6.8-12.el8_2.ppc64le.rpm
gnutls-utils-debuginfo-3.6.8-12.el8_2.ppc64le.rpm
nettle-3.4.1-2.el8_2.ppc64le.rpm
nettle-debuginfo-3.4.1-2.el8_2.ppc64le.rpm
nettle-debugsource-3.4.1-2.el8_2.ppc64le.rpm
s390x:
gnutls-3.6.8-12.el8_2.s390x.rpm
gnutls-c++-debuginfo-3.6.8-12.el8_2.s390x.rpm
gnutls-dane-debuginfo-3.6.8-12.el8_2.s390x.rpm
gnutls-debuginfo-3.6.8-12.el8_2.s390x.rpm
gnutls-debugsource-3.6.8-12.el8_2.s390x.rpm
gnutls-utils-debuginfo-3.6.8-12.el8_2.s390x.rpm
nettle-3.4.1-2.el8_2.s390x.rpm
nettle-debuginfo-3.4.1-2.el8_2.s390x.rpm
nettle-debugsource-3.4.1-2.el8_2.s390x.rpm
x86_64:
gnutls-3.6.8-12.el8_2.i686.rpm
gnutls-3.6.8-12.el8_2.x86_64.rpm
gnutls-c++-debuginfo-3.6.8-12.el8_2.i686.rpm
gnutls-c++-debuginfo-3.6.8-12.el8_2.x86_64.rpm
gnutls-dane-debuginfo-3.6.8-12.el8_2.i686.rpm
gnutls-dane-debuginfo-3.6.8-12.el8_2.x86_64.rpm
gnutls-debuginfo-3.6.8-12.el8_2.i686.rpm
gnutls-debuginfo-3.6.8-12.el8_2.x86_64.rpm
gnutls-debugsource-3.6.8-12.el8_2.i686.rpm
gnutls-debugsource-3.6.8-12.el8_2.x86_64.rpm
gnutls-utils-debuginfo-3.6.8-12.el8_2.i686.rpm
gnutls-utils-debuginfo-3.6.8-12.el8_2.x86_64.rpm
nettle-3.4.1-2.el8_2.i686.rpm
nettle-3.4.1-2.el8_2.x86_64.rpm
nettle-debuginfo-3.4.1-2.el8_2.i686.rpm
nettle-debuginfo-3.4.1-2.el8_2.x86_64.rpm
nettle-debugsource-3.4.1-2.el8_2.i686.rpm
nettle-debugsource-3.4.1-2.el8_2.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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