Vulnerability Monitor

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CVE-2016-5427

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.

Published

2016-09-21T14:25:15.580

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-399

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	powerdns	authoritative	≤ 3.4.9	Yes

References

http://www.debian.org/security/2016/dsa-3664 ([email protected])
http://www.openwall.com/lists/oss-security/2016/09/09/3 Release Notes ([email protected])
http://www.securityfocus.com/bid/92917 ([email protected])
http://www.securitytracker.com/id/1036761 ([email protected])
https://doc.powerdns.com/md/security/powerdns-advisory-2016-01/ Vendor Advisory ([email protected])
https://github.com/PowerDNS/pdns/commit/881b5b03a590198d03008e4200dd00cc537712f3 ([email protected])
http://www.debian.org/security/2016/dsa-3664 (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2016/09/09/3 Release Notes (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/92917 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1036761 (af854a3a-2127-422b-91ae-364da2661108)
https://doc.powerdns.com/md/security/powerdns-advisory-2016-01/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/PowerDNS/pdns/commit/881b5b03a590198d03008e4200dd00cc537712f3 (af854a3a-2127-422b-91ae-364da2661108)