An update for libtirpc is now available for Red Hat Enterprise Linux 9. 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

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

Synopsis:          Moderate: libtirpc security update
Advisory ID:       RHSA-2022:8400-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2022:8400
Issue date:        2022-11-15
CVE Names:         CVE-2021-46828 
====================================================================
1. Summary:

An update for libtirpc is now available for Red Hat Enterprise Linux 9.

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 CodeReady Linux Builder (v. 9) - aarch64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux BaseOS (v. 9) - aarch64, ppc64le, s390x, x86_64

3. Description:

The libtirpc packages contain SunLib's implementation of
transport-independent remote procedure call (TI-RPC) documentation, which
includes a library required by programs in the nfs-utils and rpcbind
packages.

Security Fix(es):

* libtirpc: DoS vulnerability with lots of connections (CVE-2021-46828)

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 9.1 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/):

2109352 - CVE-2021-46828 libtirpc: DoS vulnerability with lots of connections
2118157 - CVE-2021-46828 libtirpc: Upgrade to the latest upstream release libtirpc-1.3.3 [rhel-9.1.0]

6. Package List:

Red Hat Enterprise Linux BaseOS (v. 9):

Source:
libtirpc-1.3.3-0.el9.src.rpm

aarch64:
libtirpc-1.3.3-0.el9.aarch64.rpm
libtirpc-debuginfo-1.3.3-0.el9.aarch64.rpm
libtirpc-debugsource-1.3.3-0.el9.aarch64.rpm

ppc64le:
libtirpc-1.3.3-0.el9.ppc64le.rpm
libtirpc-debuginfo-1.3.3-0.el9.ppc64le.rpm
libtirpc-debugsource-1.3.3-0.el9.ppc64le.rpm

s390x:
libtirpc-1.3.3-0.el9.s390x.rpm
libtirpc-debuginfo-1.3.3-0.el9.s390x.rpm
libtirpc-debugsource-1.3.3-0.el9.s390x.rpm

x86_64:
libtirpc-1.3.3-0.el9.i686.rpm
libtirpc-1.3.3-0.el9.x86_64.rpm
libtirpc-debuginfo-1.3.3-0.el9.i686.rpm
libtirpc-debuginfo-1.3.3-0.el9.x86_64.rpm
libtirpc-debugsource-1.3.3-0.el9.i686.rpm
libtirpc-debugsource-1.3.3-0.el9.x86_64.rpm

Red Hat CodeReady Linux Builder (v. 9):

aarch64:
libtirpc-debuginfo-1.3.3-0.el9.aarch64.rpm
libtirpc-debugsource-1.3.3-0.el9.aarch64.rpm
libtirpc-devel-1.3.3-0.el9.aarch64.rpm

ppc64le:
libtirpc-debuginfo-1.3.3-0.el9.ppc64le.rpm
libtirpc-debugsource-1.3.3-0.el9.ppc64le.rpm
libtirpc-devel-1.3.3-0.el9.ppc64le.rpm

s390x:
libtirpc-debuginfo-1.3.3-0.el9.s390x.rpm
libtirpc-debugsource-1.3.3-0.el9.s390x.rpm
libtirpc-devel-1.3.3-0.el9.s390x.rpm

x86_64:
libtirpc-debuginfo-1.3.3-0.el9.i686.rpm
libtirpc-debuginfo-1.3.3-0.el9.x86_64.rpm
libtirpc-debugsource-1.3.3-0.el9.i686.rpm
libtirpc-debugsource-1.3.3-0.el9.x86_64.rpm
libtirpc-devel-1.3.3-0.el9.i686.rpm
libtirpc-devel-1.3.3-0.el9.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-2021-46828
https://access.redhat.com/security/updates/classification#moderate
https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/9.1_release_notes/index

8. Contact:

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

Copyright 2022 Red Hat, Inc.
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