Yuxiao Wu, Yunyi Zhang, Baojun Liu and Haixin Duan discovered that unbound, a validating, recursive, and caching DNS resolver, was vulnerable to cache poisoning via NS RRSet injection, which could lead to domain hijack. . ------------------------------------------------------------------------- Debian LTS Advisory DLA-4365-1
Unbound could be made to hijack domains if it received specially crafted network traffic.. ========================================================================== Ubuntu Security Notice USN-7855-1 November 04, 2025 unbound vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - Ubuntu 25.04 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: Unbound could be made to hijack domains if it received specially crafted network traffic. Software Description: - unbound: validating, recursive, caching DNS resolver Details: Yuxiao Wu, Yunyi Zhang, Baojun Liu, and Haixin Duan discovered that Unbound incorrectly handled certain promiscuous NS RRSets. A remote attacker could possibly use this issue to perform a domain hijack attack. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 libunbound8 1.22.0-2ubuntu2.1 unbound 1.22.0-2ubuntu2.1 Ubuntu 25.04 libunbound8 1.22.0-1ubuntu1.2 unbound 1.22.0-1ubuntu1.2 Ubuntu 24.04 LTS libunbound8 1.19.2-1ubuntu3.6 unbound 1.19.2-1ubuntu3.6 Ubuntu 22.04 LTS libunbound8 1.13.1-1ubuntu5.13 unbound 1.13.1-1ubuntu5.13 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-7855-1 CVE-2025-11411 Package Information: . Unbound on Ubuntu could be exploited to hijack domains via crafted network traffic. Update recommended.. Unbound Update, Ubuntu Security, Domain Hijack, DNS Resolver, Important Security Advisory. . Severity: Important. LinuxSecurity.com Team
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