VulnerabilityModified
CVE-2016-5427
(dot) inside labels, which allows remote attackers to cause a denial of service (backend CPU consumption) via a crafted DNS query.
HIGH 7.5EPSS 63.0%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 63.0%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 62.98% probability · 99th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-399
- Affected
- powerdns/authoritative
- Source
- secalert@redhat.com
References
- http://www.debian.org/security/2016/dsa-3664
- http://www.openwall.com/lists/oss-security/2016/09/09/3Release Notes
- http://www.securityfocus.com/bid/92917
- http://www.securitytracker.com/id/1036761
- https://doc.powerdns.com/md/security/powerdns-advisory-2016-01/Vendor Advisory
- https://github.com/PowerDNS/pdns/commit/881b5b03a590198d03008e4200dd00cc537712f3
- http://www.debian.org/security/2016/dsa-3664
- http://www.openwall.com/lists/oss-security/2016/09/09/3Release Notes
- http://www.securityfocus.com/bid/92917
- http://www.securitytracker.com/id/1036761
- https://doc.powerdns.com/md/security/powerdns-advisory-2016-01/Vendor Advisory
- https://github.com/PowerDNS/pdns/commit/881b5b03a590198d03008e4200dd00cc537712f3
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.