CVE-2016-6172

Description

PowerDNS (aka pdns) Authoritative Server before 4.0.1 allows remote primary DNS servers to cause a denial of service (memory exhaustion and secondary DNS server crash) via a large (1) AXFR or (2) IXFR response.

Category

6.8
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.01%
Vendor Advisory debian.org Vendor Advisory opensuse.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://doc.powerdns.com/md/changelog/#powerdns-authoritative-server-401 release notes
http://www.debian.org/security/2016/dsa-3664 vendor advisory
http://www.securitytracker.com/id/1036242 vdb entry
http://www.openwall.com/lists/oss-security/2016/07/06/3 mailing list
https://github.com/PowerDNS/pdns/issues/4128 issue tracking
https://github.com/PowerDNS/pdns/issues/4133 issue tracking
http://www.securityfocus.com/bid/91678 vdb entry
https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015058.html third party advisory mailing list
https://github.com/PowerDNS/pdns/pull/4134 issue tracking
http://lists.opensuse.org/opensuse-updates/2016-08/msg00085.html third party advisory vendor advisory
https://github.com/sischkg/xfer-limit/blob/master/README.md patch

Frequently Asked Questions

What is the severity of CVE-2016-6172?
CVE-2016-6172 has been scored as a medium severity vulnerability.
How to fix CVE-2016-6172?
To fix CVE-2016-6172, 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-2016-6172 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2016-6172 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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