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Vulnerability record · CVE-2015-5470 · published 2 November 2015

CVE-2015-5470: Powerdns authoritative vulnerability

Powerdns · Authoritative

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.

7.8 CVSS 2.0 High EPSS 11% · top 4.2% CWE-399 · CWE-399
7.8CVSS 2.0 base score
11%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

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.

AV:N/AC:L/Au:N/C:N/I:N/A:C

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.openwall.com/lists/oss-security/2015/07/07/6
http://www.openwall.com/lists/oss-security/2015/07/10/8
https://doc.powerdns.com/md/security/powerdns-advisory-2015-01/ PatchVendor Advisory
http://www.openwall.com/lists/oss-security/2015/07/07/6
http://www.openwall.com/lists/oss-security/2015/07/10/8
https://doc.powerdns.com/md/security/powerdns-advisory-2015-01/ PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2009-4009Powerdns recursor memory buffer overflow vulnerabilityBuffer overflow in PowerDNS Recursor before 3.1.7.2 allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary…EPSS 18%9.8CVE-2026-33608Powerdns authoritative code injection vulnerabilityAn attacker can send a notify request that causes a new secondary domain to be added to the bind backend, but causes said backend to update its confi…EPSS 0.59%9.8CVE-2020-24698Powerdns authoritative double free vulnerabilityAn issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. A remote, unauthenticated attacker might…EPSS 3.2%9.8CVE-2019-3807Powerdns recursor insufficient verification of data authenticity vulnerabilityAn issue has been found in PowerDNS Recursor versions 4.1.x before 4.1.9 where records in the answer section of responses received from authoritative…EPSS 0.35%8.8CVE-2020-10030Powerdns recursor out-of-bounds read vulnerabilityAn issue has been found in PowerDNS Recursor 4.1.0 up to and including 4.3.0. It allows an attacker (with enough privileges to change the system's ho…EPSS 24%8.6CVE-2026-42000Powerdns authoritative command injection vulnerabilityInsufficient Validation of Names During AXFREPSS 0.54%8.2CVE-2025-59023Powerdns recursor authentication bypass by capture-replay vulnerabilityCrafted delegations or IP fragments can poison cached delegations in Recursor.EPSS 0.28%8.1CVE-2020-24696Powerdns authoritative race condition vulnerabilityAn issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. A remote, unauthenticated attacker can t…EPSS 1.4%

Source: NIST National Vulnerability Database (record CVE-2015-5470), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.