CVE-2017-15908 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://www.securityfocus.com/bid/101600 http://www.securitytracker.com/id/1039662 https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1725351 https://github.com/systemd/systemd/pull/7184 https://usn.ubuntu.com/3558-1/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5