Vulnerability in Systemd Project
CVE-2019-15718
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.
EPSS: 0.005 (40.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
Affected products
- Systemd_project Systemd — versions 240
- Fedoraproject Fedora — versions 29, 30, 31
- Redhat Enterprise_linux — versions 8.0
- Redhat Enterprise_linux_eus — versions 8.1, 8.2, 8.4
- Redhat Enterprise_linux_for_ibm_z_systems_8_s390x
- Redhat Enterprise_linux_for_ibm_z_systems_eus — versions 8.1, 8.2, 8.4
- Redhat Enterprise_linux_for_ibm_z_systems_eus_s390x — versions 8.1, 8.2
- Redhat Enterprise_linux_for_power_little_endian — versions 8.0
- Redhat Enterprise_linux_for_power_little_endian_eus — versions 8.1, 8.2, 8.4
- Redhat Enterprise_linux_server_aus — versions 8.2, 8.4
References
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
- cve@mitre.org (Exploit, Mailing List, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory, Issue Tracking)
- cve@mitre.org (x_refsource_REDHAT, vendor-advisory, Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2019-15718?
- CVE-2019-15718 is a medium-severity vulnerability in Systemd Project. CVSS score: 4.4/10. Published 2019-09-04.
- How severe is CVE-2019-15718?
- Medium severity. CVSS v3 base score is 4.4 out of 10.