CVE-2019-15718
What it is
In systemd 240, bus_open_system_watch_bind_with_description in shared/bus-util.c (as used by systemd-resolved to connect to the system D-Bus instance), calls sd_bus_set_trusted, which disables access controls for incoming D-Bus messages. An unprivileged user can exploit this by executing D-Bus methods that should be restricted to privileged users, in order to change the system's DNS resolver settings.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. Limited direct impact.
- Exploit odds
- 0.5% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.5% in the next 30 days (EPSS).
- Severity: 4.4 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.5% · EPSS, next 30 days
- Record status
- Modified
Affected
- Systemd Project Systemd 240
- Fedoraproject Fedora 29
- Fedoraproject Fedora 30
- Fedoraproject Fedora 31
- Redhat Openshift Container Platform 4.1
- Redhat Enterprise Linux 8.0
- Redhat Enterprise Linux Eus 8.1
- Redhat Enterprise Linux Eus 8.2
Attack profile CVSS 3.1 · 4.4
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2019-15718.md and follow it. Check whether this project is affected by CVE-2019-15718. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://access.redhat.com/errata/RHSA-2019:3941
- https://bugzilla.redhat.com/show_bug.cgi?id=1746057
- https://access.redhat.com/errata/RHSA-2019:3941
- https://bugzilla.redhat.com/show_bug.cgi?id=1746057
References
- http://www.openwall.com/lists/oss-security/2019/09/03/1
- https://access.redhat.com/errata/RHSA-2019:3592
- https://access.redhat.com/errata/RHSA-2019:3941
- https://bugzilla.redhat.com/show_bug.cgi?id=1746057
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRE5IS24XTF5WNZGH2L7GSQJKARBOEGL/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HIKGKXZ5OEGOEYURHLJHEMFYNLEGAW5B/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U2WNHRJW4XI6H5YMDG4BUFGPAXWUMUVG/
- http://www.openwall.com/lists/oss-security/2019/09/03/1
- https://access.redhat.com/errata/RHSA-2019:3592
- https://access.redhat.com/errata/RHSA-2019:3941
- https://bugzilla.redhat.com/show_bug.cgi?id=1746057
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRE5IS24XTF5WNZGH2L7GSQJKARBOEGL/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HIKGKXZ5OEGOEYURHLJHEMFYNLEGAW5B/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U2WNHRJW4XI6H5YMDG4BUFGPAXWUMUVG/