Alpine: multiple pdns-recursor packages: security update to 5.4.3-r0

high Tenable Cloud Security Plugin ID 445413

Description

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

- A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to cache
poisoning. (CVE-2026-33612)

- ECS zero scoped answers are stored in the packet cache while they should not. This impacts only
configurations that have ECS enabled; (CVE-2026-40012)

- An attacker can send a web request that causes unlimited memory allocation in the internal web server,
leading to a denial of service. The internal web server is disabled by default. (CVE-2026-42005)

- A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to a
crash of the Recursor due to insuffcient input validation. (CVE-2026-42387)

Solution

Update the pdns-recursor library and its related packages to version 5.4.3-r0 or later.

Plugin Details

Severity: High

ID: 445413

Version: Revision 1.1

Type: Local

Family: Alpine Linux Local Security Checks

Published: 7/29/2026

Updated: 7/29/2026

Supported Sensors: Agentless Assessment

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

Percentile: 96.67

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

Vector: CVSS2#AV:N/AC:H/Au:N/C:N/I:C/A:P

CVSS Score Source: CVE-2026-33612

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 6/25/2026

Reference Information

CVE: CVE-2026-33612, CVE-2026-40012, CVE-2026-42005, CVE-2026-42387, CVE-2026-42388, CVE-2026-42390, CVE-2026-52690

Detections

Analytics