CVE-2017-15908
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 23.6%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
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 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 23.63% probability · 98th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-835
- Affected
- systemd project/systemd · canonical/ubuntu linux
- Source
- cve@mitre.org
References
- http://www.securityfocus.com/bid/101600Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039662Third Party Advisory, VDB Entry
- https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1725351Issue Tracking, Patch, Third Party Advisory
- https://github.com/systemd/systemd/pull/7184Issue Tracking, Patch, Third Party Advisory
- https://usn.ubuntu.com/3558-1/Patch, Third Party Advisory
- http://www.securityfocus.com/bid/101600Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039662Third Party Advisory, VDB Entry
- https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1725351Issue Tracking, Patch, Third Party Advisory
- https://github.com/systemd/systemd/pull/7184Issue Tracking, Patch, Third Party Advisory
- https://usn.ubuntu.com/3558-1/Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.