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

Synopsis:          Moderate: libtar security update
Advisory ID:       RHSA-2023:2898-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2023:2898
Issue date:        2023-05-16
CVE Names:         CVE-2021-33643 CVE-2021-33644 CVE-2021-33645
                   CVE-2021-33646
====================================================================
1. Summary:

An update for libtar 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

3. Description:

The libtar packages contain a C library for manipulating tar archives. The
library supports both the strict POSIX tar format and many of the commonly
used GNU extensions.

Security Fix(es):

* libtar: out-of-bounds read in gnu_longlink (CVE-2021-33643)

* libtar: out-of-bounds read in gnu_longname (CVE-2021-33644)

* libtar: memory leak found in th_read() function (CVE-2021-33645)

* libtar: memory leak found in th_read() function (CVE-2021-33646)

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.

Additional Changes:

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 8.8 Release Notes linked from 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/):

2121289 - CVE-2021-33643 libtar: out-of-bounds read in gnu_longlink
2121292 - CVE-2021-33644 libtar: out-of-bounds read in gnu_longname
2121295 - CVE-2021-33645 libtar: memory leak found in th_read() function
2121297 - CVE-2021-33646 libtar: memory leak found in th_read() function

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
libtar-1.2.20-17.el8.src.rpm

aarch64:
libtar-1.2.20-17.el8.aarch64.rpm
libtar-debuginfo-1.2.20-17.el8.aarch64.rpm
libtar-debugsource-1.2.20-17.el8.aarch64.rpm

ppc64le:
libtar-1.2.20-17.el8.ppc64le.rpm
libtar-debuginfo-1.2.20-17.el8.ppc64le.rpm
libtar-debugsource-1.2.20-17.el8.ppc64le.rpm

s390x:
libtar-1.2.20-17.el8.s390x.rpm
libtar-debuginfo-1.2.20-17.el8.s390x.rpm
libtar-debugsource-1.2.20-17.el8.s390x.rpm

x86_64:
libtar-1.2.20-17.el8.i686.rpm
libtar-1.2.20-17.el8.x86_64.rpm
libtar-debuginfo-1.2.20-17.el8.i686.rpm
libtar-debuginfo-1.2.20-17.el8.x86_64.rpm
libtar-debugsource-1.2.20-17.el8.i686.rpm
libtar-debugsource-1.2.20-17.el8.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-2021-33643
https://access.redhat.com/security/cve/CVE-2021-33644
https://access.redhat.com/security/cve/CVE-2021-33645
https://access.redhat.com/security/cve/CVE-2021-33646
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.8_release_notes/index

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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