Vulnerability Description
An issue has been found in PowerDNS DNSDist before 1.3.3 allowing a remote attacker to craft a DNS query with trailing data such that the addition of a record by dnsdist, for example an OPT record when adding EDNS Client Subnet, might result in the trailing data being smuggled to the backend as a valid record while not seen by dnsdist. This is an issue when dnsdist is deployed as a DNS Firewall and used to filter some records that should not be received by the backend. This issue occurs only when either the 'useClientSubnet' or the experimental 'addXPF' parameters are used when declaring a new backend.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Powerdns | Dnsdist | <= 1.3.2 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14663Issue TrackingThird Party Advisory
- https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2018-08.htVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14663Issue TrackingThird Party Advisory
- https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2018-08.htVendor Advisory
FAQ
What is CVE-2018-14663?
CVE-2018-14663 is a vulnerability with a CVSS score of 5.9 (MEDIUM). An issue has been found in PowerDNS DNSDist before 1.3.3 allowing a remote attacker to craft a DNS query with trailing data such that the addition of a record by dnsdist, for example an OPT record whe...
How severe is CVE-2018-14663?
CVE-2018-14663 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-14663?
Check the references section above for vendor advisories and patch information. Affected products include: Powerdns Dnsdist.