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Red Hat Security Advisory 2022-6608-01

Red Hat Security Advisory 2022-6608-01
Posted Sep 21, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-6608-01 - dbus-broker is an implementation of a message bus as defined by the D-Bus specification. Its aim is to provide high performance and reliability, while keeping compatibility to the D-Bus reference implementation. It is exclusively written for Linux systems, and makes use of many modern features provided by recent Linux kernel releases. Issues addressed include buffer over-read and null pointer vulnerabilities.

tags | advisory, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2022-31212, CVE-2022-31213
SHA-256 | 330e8bc797e64c4f08451b22061d91eb331768f981f866d854ef6628132147e2

Red Hat Security Advisory 2022-6608-01

Change Mirror Download
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=====================================================================
Red Hat Security Advisory

Synopsis: Moderate: dbus-broker security update
Advisory ID: RHSA-2022:6608-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:6608
Issue date: 2022-09-20
CVE Names: CVE-2022-31212 CVE-2022-31213
=====================================================================

1. Summary:

An update for dbus-broker 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 Enterprise Linux BaseOS (v. 9) - aarch64, ppc64le, s390x, x86_64

3. Description:

dbus-broker is an implementation of a message bus as defined by the D-Bus
specification. Its aim is to provide high performance and reliability,
while keeping compatibility to the D-Bus reference implementation. It is
exclusively written for Linux systems, and makes use of many modern
features provided by recent Linux kernel releases.

Security Fix(es):

* dbus-broker: a stack buffer over-read if a malicious Exec line is
supplied (CVE-2022-31212)

* dbus-broker: null pointer reference when supplying a malformed XML config
file (CVE-2022-31213)

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/):

2094718 - CVE-2022-31212 dbus-broker: a stack buffer over-read if a malicious Exec line is supplied
2094722 - CVE-2022-31213 dbus-broker: null pointer reference when supplying a malformed XML config file

6. Package List:

Red Hat Enterprise Linux BaseOS (v. 9):

Source:
dbus-broker-28-5.1.el9_0.src.rpm

aarch64:
dbus-broker-28-5.1.el9_0.aarch64.rpm
dbus-broker-debuginfo-28-5.1.el9_0.aarch64.rpm
dbus-broker-debugsource-28-5.1.el9_0.aarch64.rpm

ppc64le:
dbus-broker-28-5.1.el9_0.ppc64le.rpm
dbus-broker-debuginfo-28-5.1.el9_0.ppc64le.rpm
dbus-broker-debugsource-28-5.1.el9_0.ppc64le.rpm

s390x:
dbus-broker-28-5.1.el9_0.s390x.rpm
dbus-broker-debuginfo-28-5.1.el9_0.s390x.rpm
dbus-broker-debugsource-28-5.1.el9_0.s390x.rpm

x86_64:
dbus-broker-28-5.1.el9_0.x86_64.rpm
dbus-broker-debuginfo-28-5.1.el9_0.x86_64.rpm
dbus-broker-debugsource-28-5.1.el9_0.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-2022-31212
https://access.redhat.com/security/cve/CVE-2022-31213
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 2022 Red Hat, Inc.
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