CVE-2017-15908

MEDIUM

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.

References

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/

Details

Source: MITRE

Published: 2017-10-26

Updated: 2018-03-16

Type: CWE-20

Risk Information

CVSS v2.0

Base Score: 5

Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 7.5

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

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH