Vulnerability Name:

CVE-2019-15718 (CCN-166496)

Assigned:2019-09-03
Published:2019-09-03
Updated:2022-02-20
Summary: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.
CVSS v3 Severity:4.4 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N)
3.9 Low (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): None
5.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N)
4.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): High
Availibility (A): None
5.3 Medium (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L)
4.6 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:3.6 Low (CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): None
4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:C/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): Complete
Availibility (A): None
Vulnerability Type:CWE-noinfo
CWE-285
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2019-15718

Source: MISC
Type: Exploit, Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/09/03/1

Source: REDHAT
Type: Issue Tracking, Third Party Advisory
RHSA-2019:3592

Source: REDHAT
Type: Issue Tracking, Patch, Third Party Advisory
RHSA-2019:3941

Source: MISC
Type: Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1746057

Source: XF
Type: UNKNOWN
systemd-cve201915718-sec-bypass(166496)

Source: CCN
Type: systemd GIT Repository
Resolved issue #13457

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2019-8a7dfdf1f3

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2019-24e1d561e5

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2019-d5bd5f0aa4

Source: CCN
Type: oss-sec Mailing List, Tue, 3 Sep 2019 19:35:00 +0100
CVE-2019-15718: Missing access controls on systemd-resolved's D-Bus interface

Vulnerable Configuration:Configuration 1:
  • cpe:/a:systemd_project:systemd:240:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:fedoraproject:fedora:29:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:30:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:31:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/a:redhat:openshift_container_platform:4.1:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_ibm_z_systems_8_s390x:*:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.1:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.2:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.4:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_ibm_z_systems_eus_s390x:8.1:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_ibm_z_systems_eus_s390x:8.2:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_power_little_endian_eus:8.1:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_power_little_endian_eus:8.2:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_power_little_endian_eus:8.4:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.1:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.2:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.1:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.2:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:*

    • Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:8:*:*:*:*:*:*:*

    • Configuration RedHat 2:
  • cpe:/o:redhat:enterprise_linux:8::baseos:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.redhat.rhsa:def:20193592
    P
    		RHSA-2019:3592: systemd security, bug fix, and enhancement update (Moderate)
    2019-11-05
    oval:com.ubuntu.disco:def:2019157180000000
    V
    		CVE-2019-15718 on Ubuntu 19.04 (disco) - medium.
    2019-09-04
    oval:com.ubuntu.bionic:def:2019157180000000
    V
    		CVE-2019-15718 on Ubuntu 18.04 LTS (bionic) - medium.
    2019-09-04
    BACK
    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
    redhat enterprise linux eus 8.4
    redhat enterprise linux for ibm z systems 8 s390x *
    redhat enterprise linux for ibm z systems eus 8.1
    redhat enterprise linux for ibm z systems eus 8.2
    redhat enterprise linux for ibm z systems eus 8.4
    redhat enterprise linux for ibm z systems eus s390x 8.1
    redhat enterprise linux for ibm z systems eus s390x 8.2
    redhat enterprise linux for power little endian 8.0
    redhat enterprise linux for power little endian eus 8.1
    redhat enterprise linux for power little endian eus 8.2
    redhat enterprise linux for power little endian eus 8.4
    redhat enterprise linux server aus 8.2
    redhat enterprise linux server aus 8.4
    redhat enterprise linux server for power little endian update services for sap solutions 8.1
    redhat enterprise linux server for power little endian update services for sap solutions 8.2
    redhat enterprise linux server for power little endian update services for sap solutions 8.4
    redhat enterprise linux server tus 8.2
    redhat enterprise linux server tus 8.4
    redhat enterprise linux server update services for sap solutions 8.1
    redhat enterprise linux server update services for sap solutions 8.2
    redhat enterprise linux server update services for sap solutions 8.4