DNSSEC Validation Vulnerability in PowerDNS Recursor by PowerDNS
CVE-2018-14644

5.3MEDIUM

Key Information:

Vendor

[unknown]

Status
Pdns
Vendor
CVE Published:
9 November 2018

What is CVE-2018-14644?

A security issue in PowerDNS Recursor allows a remote attacker to exploit DNS queries for meta-types like OPT, potentially leading to improper caching of zones failing DNSSEC validation. This vulnerability occurs only if the parent zone is signed, and all authoritative servers for that zone respond with a FORMERR error to queries for at least one meta-type. Consequently, clients' requests for DNSSEC validation may receive inaccurate ServFail responses, undermining the security of DNS operations.

Affected Version(s)

pdns 4.0.9

pdns 4.1.5

References

https://docs.powerdns.com/recursor/security-advisories/po...
x_refsource_CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14644
x_refsource_CONFIRM

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

CVSS V3.0

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.