Description
dbus before 1.10.28, 1.12.x before 1.12.16, and 1.13.x before 1.13.12, as used in DBusServer in Canonical Upstart in Ubuntu 14.04 (and in some, less common, uses of dbus-daemon), allows cookie spoofing because of symlink mishandling in the reference implementation of DBUS_COOKIE_SHA1 in the libdbus library. (This only affects the DBUS_COOKIE_SHA1 authentication mechanism.) A malicious client with write access to its own home directory could manipulate a ~/.dbus-keyrings symlink to cause a DBusServer with a different uid to read and write in unintended locations. In the worst case, this could result in the DBusServer reusing a cookie that is known to the malicious client, and treating that cookie as evidence that a subsequent client connection came from an attacker-chosen uid, allowing authentication bypass.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | dbus | 1.12.16-1 | — |
| Debian 13 | dbus | 1.12.16-1 | — |
| Debian 12 | dbus | 1.12.16-1 | — |
| Debian 9 | dbus | 1.10.28-0+deb9u1 | DSA-4462-1 |
| Debian 8 | dbus | 1.8.22-0+deb8u2 | DLA-1818-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | dbus | 1.12.2-1ubuntu1.1 | USN-4015-1 |
| Ubuntu 16.04 LTS | dbus | 1.10.6-1ubuntu3.4 | USN-4015-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | dbus | 1.6.18-0ubuntu4.5+esm1 | USN-4015-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | dbus +6 | 1:1.12.8-9.el8 | RHSA-2019:3707 |
| RHEL 7 | dbus +5 | 1:1.10.24-15.el7 | RHSA-2020:4032 |
| RHEL 6 | dbus +4 | 1:1.2.24-11.el6_10 | RHSA-2019:1726 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6.6 AUS | dbus +4 | 1:1.2.24-9.el6_6 | RHSA-2019:2868 |
| RHEL 6.5 AUS | dbus +4 | 1:1.2.24-9.el6_5 | RHSA-2019:2870 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | dbus-1 +1 | 1.12.2-8.3.1 | SUSE-SU-2019:1595-1 |
| SLES 15 | dbus-1 +1 | 1.12.2-3.5.1 | SUSE-SU-2019:1597-1, SUSE-SU-2019:1521-1 |
| SLES 12 SP5 | dbus-1 +1 | 1.8.22-11.3.1 | SUSE-SU-2020:1672-1 |
| SLES 12 SP2 | dbus-1 +1 | 1.8.22-24.19.1 | SUSE-SU-2019:1591-1 |
| SLES 12 SP1 | dbus-1 +1 | 1.8.22-24.19.1 | SUSE-SU-2019:1591-1 |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | dbus-1 +1 | 1.8.22-24.19.1 | SUSE-SU-2019:1591-1 |
| SLES 11 SP4 | dbus-1 +1 | 1.2.10-3.34.8.1 | SUSE-SU-2019:14111-1 |
| SLES for SAP 12 SP5 | dbus-1 +1 | 1.8.22-11.3.1 | SUSE-SU-2020:1672-1 |
| SLES for SAP 12 SP3 | dbus-1 | 1.8.22-29.17.7 | SUSE-SU-2019:2820-2 |
| SLES for SAP 12 SP3 | dbus-1-x11 | 1.8.22-29.17.12 | SUSE-SU-2019:2820-2 |
| SLES for SAP 12 SP2 | dbus-1 +1 | 1.8.22-24.19.1 | SUSE-SU-2019:1591-1 |
| SLES for SAP 12 SP1 | dbus-1 +1 | 1.8.22-24.19.1 | SUSE-SU-2019:1591-1 |
| SUSE OpenStack Cloud Crowbar 8 | dbus-1 | 1.8.22-29.17.7 | SUSE-SU-2019:2820-2 |
| SUSE OpenStack Cloud Crowbar 8 | dbus-1-x11 | 1.8.22-29.17.12 | SUSE-SU-2019:2820-2 |
| SUSE OpenStack Cloud 8 | dbus-1 | 1.8.22-29.17.7 | SUSE-SU-2019:2820-2 |
| SUSE OpenStack Cloud 8 | dbus-1-x11 | 1.8.22-29.17.12 | SUSE-SU-2019:2820-2 |
| SUSE OpenStack Cloud 7 | dbus-1 +1 | 1.8.22-24.19.1 | SUSE-SU-2019:1591-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | dbus-1 +1 | 1.2.10-3.34.8.1 | SUSE-SU-2019:14111-1 |
| SUSE HPE Helion OpenStack 8 | dbus-1 | 1.8.22-29.17.7 | SUSE-SU-2019:2820-2 |
| SUSE HPE Helion OpenStack 8 | dbus-1-x11 | 1.8.22-29.17.12 | SUSE-SU-2019:2820-2 |
| SUSE Enterprise Storage 5 | dbus-1 | 1.8.22-29.17.7 | SUSE-SU-2019:2820-2 |
| SUSE Enterprise Storage 5 | dbus-1-x11 | 1.8.22-29.17.12 | SUSE-SU-2019:2820-2 |
| SUSE Enterprise Storage 4 | dbus-1 +1 | 1.8.22-24.19.1 | SUSE-SU-2019:1591-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | dbus-1 | 1.12.20-5.5 | openSUSE-SU-2024:10711-1 |
| openSUSE Leap 15.1 | dbus-1 +1 | 1.12.2-lp151.4.3.1 | openSUSE-SU-2019:1750-1 |
| openSUSE Leap 15.0 | dbus-1 +1 | 1.12.2-lp150.2.3.1 | openSUSE-SU-2019:1671-1, openSUSE-SU-2019:1604-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | dbus | 1.12.16-r0 | — |
| Alpine v3.23 | dbus | 1.12.16-r0 | — |
| Alpine v3.22 | dbus | 1.12.16-r0 | — |
| Alpine v3.21 | dbus | 1.12.16-r0 | — |
| Alpine v3.20 | dbus | 1.12.16-r0 | — |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | dbus | 1.12.16-r0 | — |
| Alpine v3.18 | dbus | 1.12.16-r0 | — |
| Alpine v3.17 | dbus | 1.12.16-r0 | — |
| Alpine v3.16 | dbus | 1.12.16-r0 | — |
| Alpine v3.15 | dbus | 1.12.16-r0 | — |
| Alpine v3.14 | dbus | 1.12.16-r0 | — |
| Alpine v3.13 | dbus | 1.12.16-r0 | — |
| Alpine v3.12 | dbus | 1.12.16-r0 | — |
| Alpine v3.11 | dbus | 1.12.16-r0 | — |
| Alpine v3.10 | dbus | 1.12.16-r0 | — |
| Alpine v3.9 | dbus | 1.10.28-r0 | — |
| Alpine v3.8 | dbus | 1.10.28-r0 | — |
| Alpine v3.7 | dbus | 1.10.28-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | dbus +5 | 1:1.10.24-7.amzn2.0.2 | ALAS2-2022-1870 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | dbus | 1.13.6-9 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | dbus +6 | 1:1.12.8-9.0.1.el8 | ELSA-2019-3707 |
| Oracle Linux 7 | dbus +5 | 1:1.10.24-15.0.1.el7 | ELSA-2020-4032 |
Advisories 23
- RHSA-2020:4032 Red Hat Security Advisory: dbus security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2019:2870 Red Hat Security Advisory: dbus security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2019:1726 Red Hat Security Advisory: dbus security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2019:3707 Red Hat Security Advisory: dbus security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2019:2868 Red Hat Security Advisory: dbus security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-4015-2 dbus vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-4015-1 dbus vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4462-1 dbus - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1818-1 dbus - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10711-1 dbus-1-1.12.20-5.5 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2820-2 Security update for dbus-1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:1672-1 Security update for dbus-1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:14111-1 Security update for dbus-1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1597-1 Security update for dbus-1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1595-1 Security update for dbus-1 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:1671-1 Security update for dbus-1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1591-1 Security update for dbus-1 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:1750-1 Security update for dbus-1 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:1604-1 Security update for dbus-1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1521-1 Security update for dbus-1 SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2-2022-1870 Important: dbus security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Nov 8, 2022
- ELSA-2020-4032 Moderate: dbus security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 6, 2020
- ELSA-2019-3707 Moderate: dbus security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 14, 2019
References
- https://www.openwall.com/lists/oss-security/2019/06/11/2
- [oss-security] 20190611 CVE-2019-12749: DBusServer DBUS_COOKIE_SHA1 authentication bypass mailing-list
- USN-4015-1 vendor-advisory
- USN-4015-2 vendor-advisory
- DSA-4462 vendor-advisory
- 20190613 [SECURITY] [DSA 4462-1] dbus security update mailing-list
- 108751 vdb-entry
- [debian-lts-announce] 20190614 [SECURITY] [DLA 1818-1] dbus security update mailing-list
- FEDORA-2019-d5ded5326b vendor-advisory
- openSUSE-SU-2019:1604 vendor-advisory
- openSUSE-SU-2019:1671 vendor-advisory
- RHSA-2019:1726 vendor-advisory
- openSUSE-SU-2019:1750 vendor-advisory
- GLSA-201909-08 vendor-advisory
- RHSA-2019:2868 vendor-advisory
- RHSA-2019:2870 vendor-advisory
- RHSA-2019:3707 vendor-advisory