Vulnerability CVE-2017-15908
Published: 2017-10-26

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.

Type:

CWE-835

 (Loop with Unreachable Exit Condition ('Infinite Loop'))

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Freedesktop -> Systemd 

 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/
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