Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2017-15908

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
26/10/2017
Last modified:
20/04/2025

Description

In systemd 223 through 235, a remote DNS server can respond with a custom crafted DNS NSEC resource record to trigger an infinite loop in the dns_packet_read_type_window() function of the 'systemd-resolved' service and cause a DoS of the affected service.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:systemd_project:systemd:223:*:*:*:*:*:*:*
cpe:2.3:a:systemd_project:systemd:224:*:*:*:*:*:*:*
cpe:2.3:a:systemd_project:systemd:225:*:*:*:*:*:*:*
cpe:2.3:a:systemd_project:systemd:226:*:*:*:*:*:*:*
cpe:2.3:a:systemd_project:systemd:227:*:*:*:*:*:*:*
cpe:2.3:a:systemd_project:systemd:228:*:*:*:*:*:*:*
cpe:2.3:a:systemd_project:systemd:229:*:*:*:*:*:*:*
cpe:2.3:a:systemd_project:systemd:230:*:*:*:*:*:*:*
cpe:2.3:a:systemd_project:systemd:231:*:*:*:*:*:*:*
cpe:2.3:a:systemd_project:systemd:232:*:*:*:*:*:*:*
cpe:2.3:a:systemd_project:systemd:233:*:*:*:*:*:*:*
cpe:2.3:a:systemd_project:systemd:234:*:*:*:*:*:*:*
cpe:2.3:a:systemd_project:systemd:235:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools