CVE-2017-15120

Description

An issue has been found in the parsing of authoritative answers in PowerDNS Recursor before 4.0.8, leading to a NULL pointer dereference when parsing a specially crafted answer containing a CNAME of a different class than IN. An unauthenticated remote attacker could cause a denial of service.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.60%
Vendor Advisory debian.org Vendor Advisory powerdns.com
Affected: PowerDNS pdns-recursor
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15120 issue tracking third party advisory
https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-08.html patch vendor advisory
https://www.debian.org/security/2017/dsa-4063 third party advisory vendor advisory
http://seclists.org/oss-sec/2017/q4/382 mailing list third party advisory patch
http://www.securityfocus.com/bid/106335 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-15120?
CVE-2017-15120 has been scored as a high severity vulnerability.
How to fix CVE-2017-15120?
To fix CVE-2017-15120, 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-2017-15120 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-15120 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-2017-15120?
CVE-2017-15120 affects PowerDNS pdns-recursor.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.