CVE-2016-5426
First published: Wed Sep 21 2016(Updated: )
PowerDNS (aka pdns) Authoritative Server before 3.4.10 allows remote attackers to cause a denial of service (backend CPU consumption) via a long qname.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| PowerDNS | <=3.4.9 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- http://www.debian.org/security/2016/dsa-3664
- http://www.openwall.com/lists/oss-security/2016/09/09/3
- http://www.securityfocus.com/bid/92917
- http://www.securitytracker.com/id/1036761
- https://doc.powerdns.com/md/security/powerdns-advisory-2016-01/
- https://github.com/PowerDNS/pdns/commit/881b5b03a590198d03008e4200dd00cc537712f3
Frequently Asked Questions
What is the severity of CVE-2016-5426?
CVE-2016-5426 has a medium severity rating as it can lead to denial of service by consuming backend CPU resources.
How does CVE-2016-5426 affect PowerDNS?
CVE-2016-5426 allows remote attackers to exploit PowerDNS by sending a specially crafted long qname, causing high CPU consumption.
How do I fix CVE-2016-5426?
To fix CVE-2016-5426, upgrade PowerDNS to version 3.4.10 or later.
Which versions of PowerDNS are vulnerable to CVE-2016-5426?
PowerDNS versions prior to 3.4.10, specifically 3.4.9 and earlier, are vulnerable to CVE-2016-5426.
What types of attacks does CVE-2016-5426 enable?
CVE-2016-5426 enables denial of service attacks through excessive resource consumption on the backend.
- agent/references
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/weakness
- agent/remedy
- agent/author
- agent/severity
- agent/first-publish-date
- agent/softwarecombine
- agent/event
- agent/description
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/powerdns
- canonical/powerdns
- version/powerdns/3.4.9