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

Synopsis:          Moderate: libtasn1 security update
Advisory ID:       RHSA-2023:0116-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2023:0116
Issue date:        2023-01-12
CVE Names:         CVE-2021-46848 
=====================================================================

1. Summary:

An update for libtasn1 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 AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, ppc64le, s390x, x86_64

3. Description:

A library that provides Abstract Syntax Notation One (ASN.1, as specified
by the X.680 ITU-T recommendation) parsing and structures management, and
Distinguished Encoding Rules (DER, as per X.690) encoding and decoding
functions.

Security Fix(es):

* libtasn1: Out-of-bound access in ETYPE_OK (CVE-2021-46848)

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/):

2140058 - CVE-2021-46848 libtasn1: Out-of-bound access in ETYPE_OK

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

aarch64:
libtasn1-debuginfo-4.13-4.el8_7.aarch64.rpm
libtasn1-debugsource-4.13-4.el8_7.aarch64.rpm
libtasn1-devel-4.13-4.el8_7.aarch64.rpm
libtasn1-tools-4.13-4.el8_7.aarch64.rpm
libtasn1-tools-debuginfo-4.13-4.el8_7.aarch64.rpm

ppc64le:
libtasn1-debuginfo-4.13-4.el8_7.ppc64le.rpm
libtasn1-debugsource-4.13-4.el8_7.ppc64le.rpm
libtasn1-devel-4.13-4.el8_7.ppc64le.rpm
libtasn1-tools-4.13-4.el8_7.ppc64le.rpm
libtasn1-tools-debuginfo-4.13-4.el8_7.ppc64le.rpm

s390x:
libtasn1-debuginfo-4.13-4.el8_7.s390x.rpm
libtasn1-debugsource-4.13-4.el8_7.s390x.rpm
libtasn1-devel-4.13-4.el8_7.s390x.rpm
libtasn1-tools-4.13-4.el8_7.s390x.rpm
libtasn1-tools-debuginfo-4.13-4.el8_7.s390x.rpm

x86_64:
libtasn1-debuginfo-4.13-4.el8_7.i686.rpm
libtasn1-debuginfo-4.13-4.el8_7.x86_64.rpm
libtasn1-debugsource-4.13-4.el8_7.i686.rpm
libtasn1-debugsource-4.13-4.el8_7.x86_64.rpm
libtasn1-devel-4.13-4.el8_7.i686.rpm
libtasn1-devel-4.13-4.el8_7.x86_64.rpm
libtasn1-tools-4.13-4.el8_7.x86_64.rpm
libtasn1-tools-debuginfo-4.13-4.el8_7.i686.rpm
libtasn1-tools-debuginfo-4.13-4.el8_7.x86_64.rpm

Red Hat Enterprise Linux BaseOS (v. 8):

Source:
libtasn1-4.13-4.el8_7.src.rpm

aarch64:
libtasn1-4.13-4.el8_7.aarch64.rpm
libtasn1-debuginfo-4.13-4.el8_7.aarch64.rpm
libtasn1-debugsource-4.13-4.el8_7.aarch64.rpm
libtasn1-tools-debuginfo-4.13-4.el8_7.aarch64.rpm

ppc64le:
libtasn1-4.13-4.el8_7.ppc64le.rpm
libtasn1-debuginfo-4.13-4.el8_7.ppc64le.rpm
libtasn1-debugsource-4.13-4.el8_7.ppc64le.rpm
libtasn1-tools-debuginfo-4.13-4.el8_7.ppc64le.rpm

s390x:
libtasn1-4.13-4.el8_7.s390x.rpm
libtasn1-debuginfo-4.13-4.el8_7.s390x.rpm
libtasn1-debugsource-4.13-4.el8_7.s390x.rpm
libtasn1-tools-debuginfo-4.13-4.el8_7.s390x.rpm

x86_64:
libtasn1-4.13-4.el8_7.i686.rpm
libtasn1-4.13-4.el8_7.x86_64.rpm
libtasn1-debuginfo-4.13-4.el8_7.i686.rpm
libtasn1-debuginfo-4.13-4.el8_7.x86_64.rpm
libtasn1-debugsource-4.13-4.el8_7.i686.rpm
libtasn1-debugsource-4.13-4.el8_7.x86_64.rpm
libtasn1-tools-debuginfo-4.13-4.el8_7.i686.rpm
libtasn1-tools-debuginfo-4.13-4.el8_7.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-2021-46848
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

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

Copyright 2023 Red Hat, Inc.
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