Unbound: unrestricted reconfiguration enabled to anyone that may lead to local privilege escalation

8 CVSS

Vulnerability Description

A vulnerability was found in Unbound due to incorrect default permissions, allowing any process outside the unbound group to modify the unbound runtime configuration. If a process can connect over localhost to port 8953, it can alter the configuration of unbound.service. This flaw allows an unprivileged attacker to manipulate a running instance, potentially altering forwarders, allowing them to track all queries forwarded by the local resolver, and, in some cases, disrupting resolving altogether.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

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Affected Vendor

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Affected Software

Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.2 Telecommunications Update Service, Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.6 Extended Update Support, Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Extended Update Support, Red Hat Enterprise Linux 9.2 Extended Update Support, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7

Vulnerable Versions:

1.16.2, 0:1.16.2-5.el8_9.6, 0:1.16.2-5.8.el8_10, 0:1.7.3-12.el8_2.1, 0:1.7.3-15.el8_4.1, 0:1.7.3-17.el8_6.4, 0:1.16.2-5.el8_8.4, 0:1.16.2-3.el9_3.5, 0:1.13.1-13.el9_0.4, 0:1.16.2-3.el9_2.4