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AUSCERT External Security Bulletin Redistribution
ESB-2022.4676
dbus-broker security update
21 September 2022
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: dbus-broker
Publisher: Red Hat
Operating System: Red Hat
Resolution: Patch/Upgrade
CVE Names: CVE-2022-31213 CVE-2022-31212
Original Bulletin:
https://access.redhat.com/errata/RHSA-2022:6608
Comment: CVSS (Max): 7.5 CVE-2022-31213 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVSS Source: Red Hat
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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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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