Dnsdist
CVE-2018-14663
MEDIUM
Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Lifecycle Timeline
1DescriptionNVD
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.
AnalysisAI
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. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
Technical ContextAI
This vulnerability is classified under CWE-20. 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. Affected products include: Powerdns Dnsdist. Version information: before 1.3.3.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
dnsdist version 1.1.0 is vulnerable to a flaw in authentication mechanism for REST API potentially allowing CSRF attack.
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DNSdist fails to validate packet size bounds when rewriting DNS questions or responses via Lua methods (DNSQuestion:chan
Memory exhaustion in DNSdist allows remote, unauthenticated attackers to trigger denial of service by crafting malicious
Out-of-bounds read in PowerDNS dnsdist allows unauthenticated remote attackers to trigger denial of service or potential
DNSdist instances using custom Lua code can be crashed via denial of service when the DNSQuestion:getEDNSOptions method
Denial of service in dnsdist via crafted PRSD (PowerDNS Response Detection) queries causes assertion failure and service
dnsdist's Discovery of Designated Resolvers (DDR) upgrade mechanism allows a rogue backend to send a crafted SVCB respon
dnsdist can experience a denial-of-service condition through query-response mismatching when a client sends precisely ti
HTML injection in DNSdist internal web dashboard allows remote unauthenticated attackers to inject malicious content via
Same weakness CWE-20 – Improper Input Validation
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External POC / Exploit Code
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