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CVE-2023-34969

20
FAUCET Score

CVE-2023-34969 is a denial-of-service vulnerability affecting D-Bus versions prior to 1.15.6, including various Debian and Fedora distributions. An unprivileged user can crash the dbus-daemon by sending an unreplyable message if a privileged user is monitoring bus traffic via the org.freedesktop.DBus.Monitoring interface. This vulnerability has a CVSS score of 6.5 (Medium), indicating a low attack complexity and the potential for high availability impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.12.0, < 1.12.28CPE matchmatch criteria
cpe:2.3:a:freedesktop:dbus:*:*:*:*:*:*:*:*
>= 1.14.0, < 1.14.8CPE matchmatch criteria
cpe:2.3:a:freedesktop:dbus:*:*:*:*:*:*:*:*
>= 1.15.0, < 1.15.6CPE matchmatch criteria
cpe:2.3:a:freedesktop:dbus:*:*:*:*:*:*:*:*
38CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.42%
Probability of exploitation in next 30 days
EPSS Percentile
70.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0142 is in the 84th percentile among its peer group of 21,957 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

microsoftpatch availablevia msrc
Product: cbl2 dbus 1.15.6-1 on CBL Mariner 2.0Fixed in: 1.15.6-1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: dbus-1:1.12.8-24.el8_8.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Extended Update SupportFixed in: dbus-1:1.12.8-18.el8_6.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: dbus-1:1.12.20-7.el9_2.1
View patch

Vendor Advisories (2)

microsoft2023-Jun/CVE-2023-34969Moderate

D-Bus before 1.15.6 sometimes allows unprivileged users to crash dbus-daemon. If a privileged user with control over the dbus-daemon is using the org.freedesktop.DBus.Monitoring interface to monitor message bus traffic then an unprivileged user with the ability to connect to the same dbus-daemon can cause a dbus-daemon crash under some circumstances via an unreplyable message. When done on the well-known system bus this is a denial-of-service vulnerability. The fixed versions are 1.12.28 1.14.8 and 1.15.6.

Jun 13, 2023
redhatCVE-2023-34969Moderate

dbus: dbus-daemon: assertion failure when a monitor is active and a message from the driver cannot be delivered

Jun 6, 2023

References

gitlab.freedesktop.org / dbus/dbus/-/issues/457
ExploitIssue TrackingMitigationPatchVendor Advisory
lists.debian.org / debian-lts-announce/2023/10/msg00033.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/BZYCDRMD7B4XO4HF6C6YTLH4YUD7TANP
Mailing ListThird Party Advisory
security.netapp.com / advisory/ntap-20231208-0007