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===================================================================== Red Hat Security Advisory
Synopsis: Important: gnutls and nettle security update Advisory ID: RHSA-2021:1206-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:1206 Issue date: 2021-04-14 CVE Names: CVE-2021-20305 =====================================================================
1. Summary:
An update for gnutls and nettle is now available for Red Hat Enterprise Linux 8.
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 (v. 8) - aarch64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux BaseOS (v. 8) - 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 (v. 8):
aarch64: gnutls-c++-3.6.14-8.el8_3.aarch64.rpm gnutls-c++-debuginfo-3.6.14-8.el8_3.aarch64.rpm gnutls-dane-3.6.14-8.el8_3.aarch64.rpm gnutls-dane-debuginfo-3.6.14-8.el8_3.aarch64.rpm gnutls-debuginfo-3.6.14-8.el8_3.aarch64.rpm gnutls-debugsource-3.6.14-8.el8_3.aarch64.rpm gnutls-devel-3.6.14-8.el8_3.aarch64.rpm gnutls-utils-3.6.14-8.el8_3.aarch64.rpm gnutls-utils-debuginfo-3.6.14-8.el8_3.aarch64.rpm nettle-debuginfo-3.4.1-4.el8_3.aarch64.rpm nettle-debugsource-3.4.1-4.el8_3.aarch64.rpm nettle-devel-3.4.1-4.el8_3.aarch64.rpm
ppc64le: gnutls-c++-3.6.14-8.el8_3.ppc64le.rpm gnutls-c++-debuginfo-3.6.14-8.el8_3.ppc64le.rpm gnutls-dane-3.6.14-8.el8_3.ppc64le.rpm gnutls-dane-debuginfo-3.6.14-8.el8_3.ppc64le.rpm gnutls-debuginfo-3.6.14-8.el8_3.ppc64le.rpm gnutls-debugsource-3.6.14-8.el8_3.ppc64le.rpm gnutls-devel-3.6.14-8.el8_3.ppc64le.rpm gnutls-utils-3.6.14-8.el8_3.ppc64le.rpm gnutls-utils-debuginfo-3.6.14-8.el8_3.ppc64le.rpm nettle-debuginfo-3.4.1-4.el8_3.ppc64le.rpm nettle-debugsource-3.4.1-4.el8_3.ppc64le.rpm nettle-devel-3.4.1-4.el8_3.ppc64le.rpm
s390x: gnutls-c++-3.6.14-8.el8_3.s390x.rpm gnutls-c++-debuginfo-3.6.14-8.el8_3.s390x.rpm gnutls-dane-3.6.14-8.el8_3.s390x.rpm gnutls-dane-debuginfo-3.6.14-8.el8_3.s390x.rpm gnutls-debuginfo-3.6.14-8.el8_3.s390x.rpm gnutls-debugsource-3.6.14-8.el8_3.s390x.rpm gnutls-devel-3.6.14-8.el8_3.s390x.rpm gnutls-utils-3.6.14-8.el8_3.s390x.rpm gnutls-utils-debuginfo-3.6.14-8.el8_3.s390x.rpm nettle-debuginfo-3.4.1-4.el8_3.s390x.rpm nettle-debugsource-3.4.1-4.el8_3.s390x.rpm nettle-devel-3.4.1-4.el8_3.s390x.rpm
x86_64: gnutls-c++-3.6.14-8.el8_3.i686.rpm gnutls-c++-3.6.14-8.el8_3.x86_64.rpm gnutls-c++-debuginfo-3.6.14-8.el8_3.i686.rpm gnutls-c++-debuginfo-3.6.14-8.el8_3.x86_64.rpm gnutls-dane-3.6.14-8.el8_3.i686.rpm gnutls-dane-3.6.14-8.el8_3.x86_64.rpm gnutls-dane-debuginfo-3.6.14-8.el8_3.i686.rpm gnutls-dane-debuginfo-3.6.14-8.el8_3.x86_64.rpm gnutls-debuginfo-3.6.14-8.el8_3.i686.rpm gnutls-debuginfo-3.6.14-8.el8_3.x86_64.rpm gnutls-debugsource-3.6.14-8.el8_3.i686.rpm gnutls-debugsource-3.6.14-8.el8_3.x86_64.rpm gnutls-devel-3.6.14-8.el8_3.i686.rpm gnutls-devel-3.6.14-8.el8_3.x86_64.rpm gnutls-utils-3.6.14-8.el8_3.x86_64.rpm gnutls-utils-debuginfo-3.6.14-8.el8_3.i686.rpm gnutls-utils-debuginfo-3.6.14-8.el8_3.x86_64.rpm nettle-debuginfo-3.4.1-4.el8_3.i686.rpm nettle-debuginfo-3.4.1-4.el8_3.x86_64.rpm nettle-debugsource-3.4.1-4.el8_3.i686.rpm nettle-debugsource-3.4.1-4.el8_3.x86_64.rpm nettle-devel-3.4.1-4.el8_3.i686.rpm nettle-devel-3.4.1-4.el8_3.x86_64.rpm
Red Hat Enterprise Linux BaseOS (v. 8):
Source: gnutls-3.6.14-8.el8_3.src.rpm nettle-3.4.1-4.el8_3.src.rpm
aarch64: gnutls-3.6.14-8.el8_3.aarch64.rpm gnutls-c++-debuginfo-3.6.14-8.el8_3.aarch64.rpm gnutls-dane-debuginfo-3.6.14-8.el8_3.aarch64.rpm gnutls-debuginfo-3.6.14-8.el8_3.aarch64.rpm gnutls-debugsource-3.6.14-8.el8_3.aarch64.rpm gnutls-utils-debuginfo-3.6.14-8.el8_3.aarch64.rpm nettle-3.4.1-4.el8_3.aarch64.rpm nettle-debuginfo-3.4.1-4.el8_3.aarch64.rpm nettle-debugsource-3.4.1-4.el8_3.aarch64.rpm
ppc64le: gnutls-3.6.14-8.el8_3.ppc64le.rpm gnutls-c++-debuginfo-3.6.14-8.el8_3.ppc64le.rpm gnutls-dane-debuginfo-3.6.14-8.el8_3.ppc64le.rpm gnutls-debuginfo-3.6.14-8.el8_3.ppc64le.rpm gnutls-debugsource-3.6.14-8.el8_3.ppc64le.rpm gnutls-utils-debuginfo-3.6.14-8.el8_3.ppc64le.rpm nettle-3.4.1-4.el8_3.ppc64le.rpm nettle-debuginfo-3.4.1-4.el8_3.ppc64le.rpm nettle-debugsource-3.4.1-4.el8_3.ppc64le.rpm
s390x: gnutls-3.6.14-8.el8_3.s390x.rpm gnutls-c++-debuginfo-3.6.14-8.el8_3.s390x.rpm gnutls-dane-debuginfo-3.6.14-8.el8_3.s390x.rpm gnutls-debuginfo-3.6.14-8.el8_3.s390x.rpm gnutls-debugsource-3.6.14-8.el8_3.s390x.rpm gnutls-utils-debuginfo-3.6.14-8.el8_3.s390x.rpm nettle-3.4.1-4.el8_3.s390x.rpm nettle-debuginfo-3.4.1-4.el8_3.s390x.rpm nettle-debugsource-3.4.1-4.el8_3.s390x.rpm
x86_64: gnutls-3.6.14-8.el8_3.i686.rpm gnutls-3.6.14-8.el8_3.x86_64.rpm gnutls-c++-debuginfo-3.6.14-8.el8_3.i686.rpm gnutls-c++-debuginfo-3.6.14-8.el8_3.x86_64.rpm gnutls-dane-debuginfo-3.6.14-8.el8_3.i686.rpm gnutls-dane-debuginfo-3.6.14-8.el8_3.x86_64.rpm gnutls-debuginfo-3.6.14-8.el8_3.i686.rpm gnutls-debuginfo-3.6.14-8.el8_3.x86_64.rpm gnutls-debugsource-3.6.14-8.el8_3.i686.rpm gnutls-debugsource-3.6.14-8.el8_3.x86_64.rpm gnutls-utils-debuginfo-3.6.14-8.el8_3.i686.rpm gnutls-utils-debuginfo-3.6.14-8.el8_3.x86_64.rpm nettle-3.4.1-4.el8_3.i686.rpm nettle-3.4.1-4.el8_3.x86_64.rpm nettle-debuginfo-3.4.1-4.el8_3.i686.rpm nettle-debuginfo-3.4.1-4.el8_3.x86_64.rpm nettle-debugsource-3.4.1-4.el8_3.i686.rpm nettle-debugsource-3.4.1-4.el8_3.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/
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