CVE-2016-5426
published 2016-09-21CVE-2016-5426: 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.
PriorityP346high7.5CVSS 3.0
AVNACLPRNUINSUCNINAH
EPSS
30.63%
98.0th percentile
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.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | pdns | < pdns 4.0.0~alpha1-1 (bookworm) | pdns 4.0.0~alpha1-1 (bookworm) |
| open-xchange | pdns | >= 0 < 4.0.0~alpha1-1 | 4.0.0~alpha1-1 |
| open-xchange | pdns | >= 0 < 4.0.0~alpha1-1 | 4.0.0~alpha1-1 |
| open-xchange | pdns | >= 0 < 4.0.0~alpha1-1 | 4.0.0~alpha1-1 |
| open-xchange | pdns | >= 0 < 4.0.0~alpha1-1 | 4.0.0~alpha1-1 |
| powerdns | authoritative | <= 3.4.9 | — |
CVSS provenance
nvdv3.07.5HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
osv7.5HIGH
vendor_debian7.5HIGH
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Debian
CVE-2016-5426: pdns - PowerDNS (aka pdns) Authoritative Server before 3.4.10 allows remote attackers t...
vendor_debian·2016·CVSS 7.5
CVE-2016-5426 [HIGH] CVE-2016-5426: pdns - PowerDNS (aka pdns) Authoritative Server before 3.4.10 allows remote attackers t...
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.
Scope: local
bookworm: resolved (fixed in 4.0.0~alpha1-1)
bullseye: resolved (fixed in 4.0.0~alpha1-1)
forky: resolved (fixed in 4.0.0~alpha1-1)
sid: resolved (fixed in 4.0.0~alpha1-1)
trixie: resolved (fixed in 4.0.0~alpha1-1)
GHSA
GHSA-ghrw-639j-38vq: PowerDNS (aka pdns) Authoritative Server before 3
ghsa_unreviewed·2022-05-17
CVE-2016-5426 [HIGH] GHSA-ghrw-639j-38vq: PowerDNS (aka pdns) Authoritative Server before 3
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.
OSV
CVE-2016-5426: PowerDNS (aka pdns) Authoritative Server before 3
osv·2016-09-21·CVSS 7.5
CVE-2016-5426 [HIGH] CVE-2016-5426: PowerDNS (aka pdns) Authoritative Server before 3
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.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2016-5426 CVE-2016-5427 pdns: Crafted queries can cause unexpected backend load [fedora-23]
bugzilla·2016-09-12·CVSS 7.5
CVE-2016-5426 [HIGH] CVE-2016-5426 CVE-2016-5427 pdns: Crafted queries can cause unexpected backend load [fedora-23]
CVE-2016-5426 CVE-2016-5427 pdns: Crafted queries can cause unexpected backend load [fedora-23]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
[bug automatically created by: add-tra
Bugzilla
CVE-2016-5426 CVE-2016-5427 pdns: Crafted queries can cause unexpected backend load [epel-all]
bugzilla·2016-09-12·CVSS 7.5
CVE-2016-5426 [HIGH] CVE-2016-5426 CVE-2016-5427 pdns: Crafted queries can cause unexpected backend load [epel-all]
CVE-2016-5426 CVE-2016-5427 pdns: Crafted queries can cause unexpected backend load [epel-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora EPEL.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple
Bugzilla
CVE-2016-5426 CVE-2016-5427 pdns: Crafted queries can cause unexpected backend load
bugzilla·2016-09-12·CVSS 7.5
CVE-2016-5426 [HIGH] CVE-2016-5426 CVE-2016-5427 pdns: Crafted queries can cause unexpected backend load
CVE-2016-5426 CVE-2016-5427 pdns: Crafted queries can cause unexpected backend load
Two issues have been found in PowerDNS Authoritative Server allowing a remote, unauthenticated attacker to cause an abnormal load on the PowerDNS backend by sending crafted DNS queries, which might result in a partial denial of service if the backend becomes overloaded. SQL backends for example are particularly vulnerable to this kind of unexpected load if they have not been dimensioned for it.
The first issue is based on the fact that PowerDNS Authoritative Server accepts queries with a qname's length larger than 255 bytes. This issue has been assigned CVE-2016-5426.
The second issue is based on the fact that PowerDNS Authoritative Server does not properly handle dot inside labels. This issue has been a
http://www.debian.org/security/2016/dsa-3664http://www.openwall.com/lists/oss-security/2016/09/09/3http://www.securityfocus.com/bid/92917http://www.securitytracker.com/id/1036761https://doc.powerdns.com/md/security/powerdns-advisory-2016-01/https://github.com/PowerDNS/pdns/commit/881b5b03a590198d03008e4200dd00cc537712f3http://www.debian.org/security/2016/dsa-3664http://www.openwall.com/lists/oss-security/2016/09/09/3http://www.securityfocus.com/bid/92917http://www.securitytracker.com/id/1036761https://doc.powerdns.com/md/security/powerdns-advisory-2016-01/https://github.com/PowerDNS/pdns/commit/881b5b03a590198d03008e4200dd00cc537712f3
2016-09-21
Published