An issue has been found in the parsing of authoritative answers in PowerDNS Recursor before 4.0.8, leading to a NULL pointer dereference when parsing a specially crafted answer containing a CNAME of a different class than IN. An unauthenticated remote attacker could cause a denial of service.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade pdns-recursor | Dec 13, 2017 | Dec 11, 2017 |
| Suse | — | Upgrade pdns-recursor-debugsourceUpgrade pdns-recursorUpgrade pdns-recursor-debuginfo | Dec 20, 2017 | Dec 11, 2017 |
| Ubuntu | no-fix-ubuntu-package | Jun 26, 2025 | Jul 27, 2018 |
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