CVE-2017-15105

Description

A flaw was found in the way unbound before 1.6.8 validated wildcard-synthesized NSEC records. An improperly validated wildcard NSEC record could be used to prove the non-existence (NXDOMAIN answer) of an existing wildcard record, or trick unbound into accepting a NODATA proof.

Categories

5.3
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.68% Top 30%
Vendor Advisory ubuntu.com Vendor Advisory unbound.net
Affected: NLnet Labs unbound
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/102817 vdb entry third party advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00022.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2018/01/msg00039.html third party advisory mailing list
https://unbound.net/downloads/CVE-2017-15105.txt patch vendor advisory
https://usn.ubuntu.com/3673-1/ third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-15105?
CVE-2017-15105 has been scored as a medium severity vulnerability.
How to fix CVE-2017-15105?
To fix CVE-2017-15105, 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-2017-15105 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-15105 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-15105?
CVE-2017-15105 affects NLnet Labs unbound.
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