High severity · published Feb 9, 2017
CVE-2016-6173
NSD before 4.1.11 allows remote DNS master servers to cause a denial of service (/tmp disk consumption and slave server crash) via a zone transfer with unlimited data
7.5
CVSS
2.9%
EPSS
No
On KEV
Description
NSD before 4.1.11 allows remote DNS master servers to cause a denial of service (/tmp disk consumption and slave server crash) via a zone transfer with unlimited data.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.9% · higher than 87% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NS
Nsd · Nlnetlabs
through 4.1.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-6173
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-6173
Release Notes
http://www.nlnetlabs.nl/svn/nsd/tags/NSD_4_1_11_REL/doc/RELNOTES
Mailing List
http://www.openwall.com/lists/oss-security/2016/07/06/3
Mailing List
http://www.openwall.com/lists/oss-security/2016/07/06/4
Third Party Advisory
http://www.securityfocus.com/bid/91678
Third Party Advisory
https://github.com/sischkg/xfer-limit/blob/master/README.md
Third Party Advisory
https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015058.html
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