CVE-2016-5427

Description

PowerDNS (aka pdns) Authoritative Server before 3.4.10 does not properly handle a . (dot) inside labels, which allows remote attackers to cause a denial of service (backend CPU consumption) via a crafted DNS query.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 32.02% Top 5%
Vendor Advisory debian.org Vendor Advisory powerdns.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/PowerDNS/pdns/commit/881b5b03a590198d03008e4200dd00cc537712f3
http://www.securitytracker.com/id/1036761 vdb entry
http://www.debian.org/security/2016/dsa-3664 vendor advisory
http://www.securityfocus.com/bid/92917 vdb entry
http://www.openwall.com/lists/oss-security/2016/09/09/3 mailing list release notes
https://doc.powerdns.com/md/security/powerdns-advisory-2016-01/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2016-5427?
CVE-2016-5427 has been scored as a high severity vulnerability.
How to fix CVE-2016-5427?
To fix CVE-2016-5427, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-5427 being actively exploited in the wild?
It is possible that CVE-2016-5427 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~32% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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