CVE-2026-33609
Description
A flaw was found in PowerDNS. When running with 8bit-dns enabled, incomplete escaping of Lightweight Directory Access Protocol (LDAP) queries allows authenticated users to perform queries of internal domain subtrees. This vulnerability can lead to information disclosure, potentially exposing sensitive internal network structure or data.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Mitigation
To reduce exposure, disable the `8bit-dns` feature within your PowerDNS configuration if it is not essential for your operational requirements. Refer to the official PowerDNS documentation for precise instructions on how to configure and disable this feature. Be aware that disabling `8bit-dns` may affect services or clients that depend on 8-bit character support in DNS queries.
Understanding the Weakness (CWE)
Confidentiality,Integrity,Availability
Technical Impact: Execute Unauthorized Code or Commands; Read Application Data; Modify Application Data
An attacker could include input that changes the LDAP query which allows unintended commands or code to be executed, allows sensitive data to be read or modified or causes other unintended behavior.
Frequently Asked Questions
Not sure what something means? Check out our Security Glossary.
Want to get errata notifications? Sign up here.
