CVE-2018-5738
BIND "Allow-Recursion" Default Inheritance Vulnerability
Description
Change #4777 (introduced in October 2017) introduced an unforeseen issue in releases which were issued after that date, affecting which clients are permitted to make recursive queries to a BIND nameserver. The intended (and documented) behavior is that if an operator has not specified a value for the "allow-recursion" setting, it SHOULD default to one of the following: none, if "recursion no;" is set in named.conf; a value inherited from the "allow-query-cache" or "allow-query" settings IF "recursion yes;" (the default for that setting) AND match lists are explicitly set for "allow-query-cache" or "allow-query" (see the BIND9 Administrative Reference Manual section 6.2 for more details); or the intended default of "allow-recursion {localhost; localnets;};" if "recursion yes;" is in effect and no values are explicitly set for "allow-query-cache" or "allow-query". However, because of the regression introduced by change #4777, it is possible when "recursion yes;" is in effect and no match list values are provided for "allow-query-cache" or "allow-query" for the setting of "allow-recursion" to inherit a setting of all hosts from the "allow-query" setting default, improperly permitting recursion to all clients. Affects BIND 9.9.12, 9.10.7, 9.11.3, 9.12.0->9.12.1-P2, the development release 9.13.0, and also releases 9.9.12-S1, 9.10.7-S1, 9.11.3-S1, and 9.11.3-S2 from BIND 9 Supported Preview Edition.
INFO
Published Date :
Jan. 16, 2019, 8:29 p.m.
Last Modified :
Aug. 30, 2019, 5:15 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2018-5738 has a 5 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2018-5738.
| URL | Resource |
|---|---|
| http://www.securitytracker.com/id/1041115 | Third Party Advisory VDB Entry |
| https://kb.isc.org/docs/aa-01616 | Mitigation Vendor Advisory |
| https://security.gentoo.org/glsa/201903-13 | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20190830-0002/ | |
| https://usn.ubuntu.com/3683-1/ | 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).
None
Emacs Lisp Makefile C Shell Roff HTML C++ XSLT Perl Python
None
Emacs Lisp Makefile C Shell Roff HTML C++ XSLT Perl Python
None
Emacs Lisp Makefile C Shell Roff HTML C++ XSLT Perl Python
Packaging for bind9-libs
Emacs Lisp Makefile C Shell Roff HTML C++ XSLT Perl Python
None
Makefile C Shell Roff HTML C++ XSLT Perl Python Batchfile
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2018-5738 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2018-5738 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.
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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 Internet Systems Consortium (ISC) AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N -
CVE Modified by [email protected]
Aug. 30, 2019
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20190830-0002/ [No Types Assigned] -
Modified Analysis by [email protected]
Mar. 20, 2019
Action Type Old Value New Value Changed Reference Type https://security.gentoo.org/glsa/201903-13 No Types Assigned https://security.gentoo.org/glsa/201903-13 Third Party Advisory -
CVE Modified by [email protected]
Mar. 14, 2019
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/201903-13 [No Types Assigned] -
Initial Analysis by [email protected]
Feb. 20, 2019
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:N/A:N) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Changed Reference Type https://kb.isc.org/docs/aa-01616 No Types Assigned https://kb.isc.org/docs/aa-01616 Mitigation, Vendor Advisory Changed Reference Type https://usn.ubuntu.com/3683-1/ No Types Assigned https://usn.ubuntu.com/3683-1/ Third Party Advisory Changed Reference Type http://www.securitytracker.com/id/1041115 No Types Assigned http://www.securitytracker.com/id/1041115 Third Party Advisory, VDB Entry Added CWE CWE-200 Added CPE Configuration OR *cpe:2.3:a:isc:bind:9.9.12:*:*:*:*:*:*:* *cpe:2.3:a:isc:bind:9.9.12:s1:*:*:*:*:*:* *cpe:2.3:a:isc:bind:9.10.7:*:*:*:*:*:*:* *cpe:2.3:a:isc:bind:9.10.7:s1:*:*:*:*:*:* *cpe:2.3:a:isc:bind:9.11.3:*:*:*:*:*:*:* *cpe:2.3:a:isc:bind:9.11.3:s1:*:*:*:*:*:* *cpe:2.3:a:isc:bind:9.11.3:s2:*:*:*:*:*:* *cpe:2.3:a:isc:bind:9.12.0:*:*:*:*:*:*:* *cpe:2.3:a:isc:bind:9.12.0:a1:*:*:*:*:*:* *cpe:2.3:a:isc:bind:9.12.0:b1:*:*:*:*:*:* *cpe:2.3:a:isc:bind:9.12.0:b2:*:*:*:*:*:* *cpe:2.3:a:isc:bind:9.12.0:rc1:*:*:*:*:*:* *cpe:2.3:a:isc:bind:9.12.0:rc3:*:*:*:*:*:* *cpe:2.3:a:isc:bind:9.12.1:*:*:*:*:*:*:* *cpe:2.3:a:isc:bind:9.12.1:p1:*:*:*:*:*:* *cpe:2.3:a:isc:bind:9.12.1:p2:*:*:*:*:*:* *cpe:2.3:a:isc:bind:9.13.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* -
CVE Modified by [email protected]
Jan. 17, 2019
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/3683-1/ [No Types Assigned] Added Reference http://www.securitytracker.com/id/1041115 [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-2018-5738 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-2018-5738
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.55 }} -0.49%
score
0.76866
percentile