Security restrictions bypass in PowerDNS Recursor - CVE-2019-3807
Published: February 1, 2019
Vulnerability identifier: #VU17348
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-3807
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: PowerDNS.COM B.V.
Affected software:
PowerDNS Recursor
PowerDNS Recursor
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass security restrictions.
The vulnerability exists due to records in the answer section of responses received from authoritative servers with the AA flag not set were not properly validated. A remote attacker can bypass DNSSEC validation.
How to mitigate CVE-2019-3807
Update to version 4.1.9.