Vulnerability Details : CVE-2018-14663
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.
Vulnerability category: Input validation
Products affected by CVE-2018-14663
- cpe:2.3:a:powerdns:dnsdist:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-14663
0.01%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 1 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-14663
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST | |
|
5.9
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N |
2.2
|
3.6
|
NIST | |
|
5.9
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N |
2.2
|
3.6
|
Red Hat, Inc. |
CWE ids for CVE-2018-14663
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by:
- nvd@nist.gov (Primary)
- secalert@redhat.com (Secondary)
References for CVE-2018-14663
-
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14663
1649051 – (CVE-2018-14663) CVE-2018-14663 dnsdist: Record smuggling when adding ECS or XPFIssue Tracking;Third Party Advisory
-
https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2018-08.html
PowerDNS Security Advisory for dnsdist 2018-08: Record smuggling when adding ECS or XPF — dnsdist documentationVendor Advisory
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