CVE-2016-7068
PowerDNS Server and Recursor CPU Exhaustion Denial of Service
Description
An issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 3.7.4 and 4.0.4, allowing a remote, unauthenticated attacker to cause an abnormal CPU usage load on the PowerDNS server by sending crafted DNS queries, which might result in a partial denial of service if the system becomes overloaded. This issue is based on the fact that the PowerDNS server parses all records present in a query regardless of whether they are needed or even legitimate. A specially crafted query containing a large number of records can be used to take advantage of that behaviour.
INFO
Published Date :
Sept. 11, 2018, 1:29 p.m.
Last Modified :
Oct. 9, 2019, 11:19 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2016-7068 has a 3 public PoC/Exploit
available at Github.
Go to the Public Exploits
tab to see the list.
Affected Products
The following products are affected by CVE-2016-7068
vulnerability.
Even if cvefeed.io
is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2016-7068
.
URL | Resource |
---|---|
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7068 | Issue Tracking Third Party Advisory |
https://doc.powerdns.com/md/security/powerdns-advisory-2016-02/ | Vendor Advisory |
https://www.debian.org/security/2017/dsa-3763 | Third Party Advisory |
https://www.debian.org/security/2017/dsa-3764 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Fork of the clairCtl utility
Go HTML Shell
None
Go HTML Shell
Tracking container vulnerabilities with Clair Control for CoreOS Clair
Go HTML Shell
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2016-7068
vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2016-7068
vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Oct. 09, 2019
Action Type Old Value New Value Added CVSS V3 Red Hat, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Added CWE Red Hat, Inc. CWE-20 -
Initial Analysis by [email protected]
Nov. 16, 2018
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:C) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://www.debian.org/security/2017/dsa-3763 No Types Assigned https://www.debian.org/security/2017/dsa-3763 Third Party Advisory Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7068 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7068 Issue Tracking, Third Party Advisory Changed Reference Type https://www.debian.org/security/2017/dsa-3764 No Types Assigned https://www.debian.org/security/2017/dsa-3764 Third Party Advisory Changed Reference Type https://doc.powerdns.com/md/security/powerdns-advisory-2016-02/ No Types Assigned https://doc.powerdns.com/md/security/powerdns-advisory-2016-02/ Vendor Advisory Added CWE CWE-400 Added CPE Configuration OR *cpe:2.3:a:powerdns:authoritative:*:*:*:*:*:*:*:* versions up to (excluding) 3.4.11 *cpe:2.3:a:powerdns:authoritative:*:*:*:*:*:*:*:* versions from (including) 4.0.0 up to (excluding) 4.0.2 *cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:* versions up to (excluding) 3.7.4 *cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:* versions from (including) 4.0.0 up to (excluding) 4.0.4 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Sep. 12, 2018
Action Type Old Value New Value Added Reference https://www.debian.org/security/2017/dsa-3764 [No Types Assigned] Added Reference https://www.debian.org/security/2017/dsa-3763 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2016-7068
is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2016-7068
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.89 }} 0.13%
score
0.80604
percentile