CVE-2016-6173

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.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.92% Top 20%
Vendor Advisory nlnetlabs.nl Vendor Advisory nlnetlabs.nl
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://open.nlnetlabs.nl/pipermail/nsd-users/2016-August/002342.html mailing list release notes vendor advisory
http://www.openwall.com/lists/oss-security/2016/07/06/3 third party advisory mailing list
http://www.securityfocus.com/bid/91678 vdb entry third party advisory
https://www.nlnetlabs.nl/bugs-script/show_bug.cgi?id=790 issue tracking
https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015058.html third party advisory mailing list
http://www.openwall.com/lists/oss-security/2016/07/06/4 third party advisory mailing list
http://www.nlnetlabs.nl/svn/nsd/tags/NSD_4_1_11_REL/doc/RELNOTES release notes vendor advisory
https://github.com/sischkg/xfer-limit/blob/master/README.md third party advisory

Frequently Asked Questions

What is the severity of CVE-2016-6173?
CVE-2016-6173 has been scored as a high severity vulnerability.
How to fix CVE-2016-6173?
To fix CVE-2016-6173, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-6173 being actively exploited in the wild?
It is possible that CVE-2016-6173 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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