CVE-2019-15718

Public Exploit

Description

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.

4.4

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.10%

Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory redhat.com Vendor Advisory redhat.com

Affected: n/a n/a

References

Link	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1746057	issue tracking third party advisory patch
http://www.openwall.com/lists/oss-security/2019/09/03/1	mailing list exploit third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U2WNHRJW4XI6H5YMDG4BUFGPAXWUMUVG/	vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HIKGKXZ5OEGOEYURHLJHEMFYNLEGAW5B/	vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRE5IS24XTF5WNZGH2L7GSQJKARBOEGL/	vendor advisory
https://access.redhat.com/errata/RHSA-2019:3592	issue tracking third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2019:3941	issue tracking third party advisory patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-15718?: CVE-2019-15718 has been scored as a medium severity vulnerability.
How to fix CVE-2019-15718?: To fix CVE-2019-15718, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-15718 being actively exploited in the wild?: It is possible that CVE-2019-15718 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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