CVE-2015-5470

Authoritative vulnerability

CVSS

7.8

EPSS

11.3%

EPSS pct

96th

Exploited

No known

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.

Affected vendor

Powerdns

Affected product

Authoritative

CVSS vector

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

Weakness type (CWE)

CWE-399

Published

2015-11-02

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to complete impact to availability.

Its EPSS score of 11.3% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2015-5470

Confirm whether Powerdns Authoritative is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2015-5470.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2015-5470

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2015-5470 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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