The label decompression functionality in PowerDNS Recursor before 3.6.4 and 3.7.x before…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.
Summary
The label decompression functionality in PowerDNS Recursor before 3.6.4 and 3.7.x before 3.7.3 and Authoritative (Auth) Server before 3.3.3 and 3.4.x before 3.4.5 allows remote attackers to cause a denial of service (CPU consumption or crash) via a request with a long name that refers to itself. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-1868.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:powerdns:authoritative:*:*:*:*:*:*:*:* | up to 3.3.2 | Vulnerable | PowerDNS |
| cpe:2.3:a:powerdns:authoritative:3.4.0:*:*:*:*:*:*:* | 3.4.0 | Vulnerable | PowerDNS |
| cpe:2.3:a:powerdns:authoritative:3.4.1:*:*:*:*:*:*:* | 3.4.1 | Vulnerable | PowerDNS |
| cpe:2.3:a:powerdns:authoritative:3.4.2:*:*:*:*:*:*:* | 3.4.2 | Vulnerable | PowerDNS |
| cpe:2.3:a:powerdns:authoritative:3.4.3:*:*:*:*:*:*:* | 3.4.3 | Vulnerable | PowerDNS |
| cpe:2.3:a:powerdns:authoritative:3.4.4:*:*:*:*:*:*:* | 3.4.4 | Vulnerable | PowerDNS |
| cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:* | up to 3.6.3 | Vulnerable | PowerDNS |
| cpe:2.3:a:powerdns:recursor:3.7.1:*:*:*:*:*:*:* | 3.7.1 | Vulnerable | PowerDNS |
| cpe:2.3:a:powerdns:recursor:3.7.2:*:*:*:*:*:*:* | 3.7.2 | Vulnerable | PowerDNS |
- cpe:2.3:a:powerdns:authoritative:*:*:*:*:*:*:*:* Versions up to 3.3.2 Vulnerable ·PowerDNS
- cpe:2.3:a:powerdns:authoritative:3.4.0:*:*:*:*:*:*:* Versions 3.4.0 Vulnerable ·PowerDNS
- cpe:2.3:a:powerdns:authoritative:3.4.1:*:*:*:*:*:*:* Versions 3.4.1 Vulnerable ·PowerDNS
- cpe:2.3:a:powerdns:authoritative:3.4.2:*:*:*:*:*:*:* Versions 3.4.2 Vulnerable ·PowerDNS
- cpe:2.3:a:powerdns:authoritative:3.4.3:*:*:*:*:*:*:* Versions 3.4.3 Vulnerable ·PowerDNS
- cpe:2.3:a:powerdns:authoritative:3.4.4:*:*:*:*:*:*:* Versions 3.4.4 Vulnerable ·PowerDNS
- cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:* Versions up to 3.6.3 Vulnerable ·PowerDNS
- cpe:2.3:a:powerdns:recursor:3.7.1:*:*:*:*:*:*:* Versions 3.7.1 Vulnerable ·PowerDNS
- cpe:2.3:a:powerdns:recursor:3.7.2:*:*:*:*:*:*:* Versions 3.7.2 Vulnerable ·PowerDNS
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2015-5470
- 2026-10-03 Alias added: GHSA-vh8j-jj36-28wq
References
More PowerDNS Authoritative vulnerabilities
- TI-2015-01678 The label decompression functionality in PowerDNS Recursor 3.5.x, 3.6.x before 3.6.3, and… CVSS 2.0HIGH 7.8
- TI-2016-04703 PowerDNS (aka pdns) Authoritative Server before 3.4.10 does not properly handle a . CVSS 3.0HIGH 7.5
- TI-2015-04466 PowerDNS (aka pdns) Authoritative Server 3.4.4 before 3.4.7 allows remote attackers to… CVSS 2.0MEDIUM 5.0
- TI-2016-04702 PowerDNS (aka pdns) Authoritative Server before 3.4.10 allows remote attackers to cause a… CVSS 3.0HIGH 7.5
- TI-2026-25990 Incomplete domain name sanitization during CVSS 3.1CRITICAL 9.8
- TI-2020-15157 An issue was discovered in PowerDNS Authoritative through 4.3.0 when… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2015-5470 · CVE Program
- CVE-2015-5470 · NVD
- FIRST EPSS
- GHSA-vh8j-jj36-28wq · GitHub Advisory Database · CC BY 4.0
- CVE-2015-5470 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences