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Red Hat Enterprise Linux 7: RHSA-2020-4032-01 Moderate Dbus Auth Bypass

red hat
Calendar Grey September 29, 2020
Dist Redhat Esm H88
A slight security improvement for RHEL 7 regarding dbus addresses a vulnerability associated with authentication circumvention, bolstering the system's protective measures.
An update for dbus is now available for Red Hat Enterprise Linux 7

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

For the update to take effect, all running instances of dbus-daemon and all running applications using the libdbus library must be restarted, or the system rebooted.

Summary

D-Bus is a system for sending messages between applications. It is used both for the system-wide message bus service, and as a per-user-login-session messaging facility.
Security Fix(es):
* dbus: DBusServer DBUS_COOKIE_SHA1 authentication bypass (CVE-2019-12749)
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 7.9 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory moderate security update Red Hat Enterprise Linux authentication bypass dbus

References

https://access.redhat.com/security/cve/CVE-2019-12749 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.9_release_notes/index

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: dbus-1.10.24-15.el7.src.rpm
x86_64: dbus-1.10.24-15.el7.x86_64.rpm dbus-debuginfo-1.10.24-15.el7.i686.rpm dbus-debuginfo-1.10.24-15.el7.x86_64.rpm dbus-libs-1.10.24-15.el7.i686.rpm dbus-libs-1.10.24-15.el7.x86_64.rpm dbus-x11-1.10.24-15.el7.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
noarch: dbus-doc-1.10.24-15.el7.noarch.rpm
x86_64: dbus-debuginfo-1.10.24-15.el7.i686.rpm dbus-debuginfo-1.10.24-15.el7.x86_64.rpm dbus-devel-1.10.24-15.el7.i686.rpm dbus-devel-1.10.24-15.el7.x86_64.rpm dbus-tests-1.10.24-15.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: dbus-1.10.24-15.el7.src.rpm
x86_64: dbus-1.10.24-15.el7.x86_64.rpm dbus-debuginfo-1.10.24-15.el7.i686.rpm dbus-debuginfo-1.10.24-15.el7.x86_64.rpm dbus-libs-1.10.24-15.el7.i686.rpm dbus-libs-1.10.24-15.el7.x86_64.rpm dbus-x11-1.10.24-15.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
noarch: dbus-doc-1.10.24-15.el7.noarch.rpm
x86_64: dbus-debuginfo-1.10.24-15.el7.i686.rpm dbus-debuginfo-1.10.24-15.el7.x86_64.rpm dbus-devel-1.10.24-15.el7.i686.rpm dbus-devel-1.10.24-15.el7.x86_64.rpm dbus-tests-1.10.24-15.el7.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: dbus-1.10.24-15.el7.src.rpm
ppc64: dbus-1.10.24-15.el7.ppc64.rpm

Read the Full Advisory


Advisory ID: RHSA-2020:4032-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4032
Issue date: 2020-09-29

Topic

An update for dbus is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate security update Red Hat Enterprise Linux authentication bypass dbus

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch, x86_64

Bugs Fixed

1719344 - CVE-2019-12749 dbus: DBusServer DBUS_COOKIE_SHA1 authentication bypass

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